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| author | Sadeep Madurange <sadeep@asciimx.com> | 2026-01-09 16:45:56 +0800 |
|---|---|---|
| committer | Sadeep Madurange <sadeep@asciimx.com> | 2026-01-09 16:45:56 +0800 |
| commit | a851a2d646f439f7126c232ba1524c55a8990872 (patch) | |
| tree | 0d8870fae739b72e37fc3ce1a672388ce7592a9c /_site | |
| parent | 3b0f6bd6879d8a32d89dcccc739a73e0e9e823a7 (diff) | |
| download | www-a851a2d646f439f7126c232ba1524c55a8990872.tar.gz | |
Remove _site from git.
Diffstat (limited to '_site')
70 files changed, 0 insertions, 3295 deletions
diff --git a/_site/404.html b/_site/404.html deleted file mode 100644 index b210b74..0000000 --- a/_site/404.html +++ /dev/null @@ -1,55 +0,0 @@ -<!doctype html> -<html lang="en-us"> - - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title></title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main class="container" id="main"><p><br /> -<br /></p> - -<h2 id="page-not-found-go-back-to-home">Page not found. <a href="/">Go back to home…</a></h2> -</main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/about/index.html b/_site/about/index.html deleted file mode 100644 index 6b4d19b..0000000 --- a/_site/about/index.html +++ /dev/null @@ -1,87 +0,0 @@ -<!doctype html> -<html lang="en-us"> - - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>About</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li class="active"> - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main class="container" id="main"><div class="container"> - <h2>About</h2> - - <p> - Notes on projects, prototypes, and experiments. - </p> - - <p> - Email: sadeep@asciimx.com [<a href="/assets/asciimx.asc" class="external" - target="_blank" rel="noopener noreferrer">GPG</a>] - </p> - - <h4>Navigation</h4> - - <ul> - <li>hme: Latest articles.</li> - <li>poc: Projects.</li> - <li>abt: Site information.</li> - <li>lup: Look up articles.</li> - <li>rss: RSS (Atom) feed.</li> - </ul> - - <h4>Site credits</h4> - - <p> - The site's CSS is derived from <a href="http://getskeleton.com/" - class="external" target="_blank" rel="noopener noreferrer">Skeleton</a> by Dave - Gamache (<a href="/assets/lic/skeleton.txt" target="_blank">license</a>) and <a - href="https://github.com/JohnCoene/marat" class="external" target="_blank" - rel="noopener noreferrer">Marat</a> by John Coene (<a - href="/assets/lic/marat.txt" target="_blank">license</a>). - </p> - -</div> - - -</main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/assets/asciimx.asc b/_site/assets/asciimx.asc deleted file mode 100644 index 4dc21aa..0000000 --- a/_site/assets/asciimx.asc +++ /dev/null @@ -1,41 +0,0 @@ ------BEGIN PGP PUBLIC KEY BLOCK----- - -mQGNBGKl6F8BDADXdtcpmkndojDEwm25gr7NF0D2MlB/EVBfs7rziPhovtjPkSWW -gxtAmFrn6XWzfu6pxzVgji7r/GzlLHZeAMiB5ycnQR9De2nFag6i0WnMDqQevN1t -vOQssdBVt0Djp6SlI10DcqnIJfIFEn6pi9Oc7YBTTE7gyQa70gE723hf4ZQQ4CVc -URQR6u1eIhmDmKraimkWyrxrHxl7Oaz1sq2yxGNQzTB8TdlNWY9YFJH6xWkCO2Sj -M6p0ooxpTX9xozHkxpMCaYxspGhAQP/r6CMZJ0S1cgQ7Ofj6hvz8BwKQmu6zMNMU -8O4ItlIH9gaCL6l1vtlalWBdpNDmriIa2CiFMgbx+T6Ztzuco/F5CA6A74y3f16F -XSUAs9r/KfRsZJlXMunl5srNHMIats37S+6D9C48HFEcwOKzYIr0nO0C/HpwlLBu -QEEZM06alT43YoxIU3vTNZa+0ZEUXLQ3MPydzOBmNk5LFm99uaf+Jnc4wZLJU0G6 -n7yXL9gLFEeMZxUAEQEAAbQlU2FkZWVwIE1hZHVyYW5nZSA8c2FkZWVwQGFzY2lp -bXguY29tPokBzgQTAQgAOBYhBKnwV3mb2gZXr/fwqBA7+ePnUL9+BQJipehfAhsD -BQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAAAoJEBA7+ePnUL9+gt0MALS1tryojFVH -qnsbzoYdynb5f9jOkPu+u+cewpOtT58TC/CBVOfwCLlv5Lc0mlUM5vTpYb3Wn4Af -W2EpMpqK+MxpqZAXtczTKzWGK8IZqiOs69byC+uA0V6ZTpWU3HLwCvdWbq8MvEL/ -+7xSJFFdhw/JMbm3cZ3aY6c3EHw0jv6vrRmSuAMX52HjABx2WxwTVxdMKsqilZ9z -PMqT5R9rd/nYVO4e2w+9VODaR4OK9Utst91YZUKfPLBPoJN6Jj+matq7ugdMfys7 -q/tKCXZC8Xen+yVL4IR9NleHj3xXgfVtNt+wwaU1gK9CxhzxJusaIwV5nRN8zIxd -rTtX0azBSafLP++HR72kMoaotJOD7gMUGUrkrKAjEyuBtGA/t08mLdzlzPx8gAYH -x/MWvFtbhR9XHCEoQJktVHjjMsxNTqazWozG0YSi0o1T5BzJ0MAC1LNThf0ElVPR -91iw+jtxugDzRnXLsiLr8+qaE8X7PSzVbkfw+QImp54/VV/WSuwIALkBjQRipehf -AQwA2jqU6eoxFHi3uQLRInKxjFa60Xyz7i5SYS2Mr+XNZnILHFW28VaqhFXzee5D -LWjhlBrapGuUeKx8D0SnV+8UA3aPd0mPPJxF2qkJ+z62eO5BXZJLqYBsIPFoyATA -gduRMVIvYr/kDCoZ8coh4fZOPro7iI1tTemnbgTfIWtpnWtBiRRPkJCVNOUwDKBC -GedmlATER/mOtuhUFtbNItZsCWpPI5fJuoqxxQ5TYXGvQjWGzVEzY9W0wC+0DmI1 -qgRJ2HZCj+89AD46RD4b6IWuo2ht3tdm21Rely2HRZyOOT70rHai4+ntUOkjUkEV -ZTcZsDHsLXNGReiQPUtwuCdEmIWujxOJdXdbiS1fSzVOduaXeaetLp3JHWQRQMLW -sjCDYDcKDUrwGrT3wt7YZrLsMtQ2JySIm2Vgz5dJVk8/7facxzkOoVe+sHj3xrBc -RtAF1qGkP+wC8/TC7PqP14sswn3Vc2+Jt5EVGJVKKcwmdo2Y567sMjgwBf6ijzYx -skZNABEBAAGJAbYEGAEIACAWIQSp8Fd5m9oGV6/38KgQO/nj51C/fgUCYqXoXwIb -DAAKCRAQO/nj51C/fhNmC/9ZWcmYKhdnRXFKw6PkZyQmiKV5FnMPLafHOclMmgHv -ONKCrZQISB4jK/NJQKk0oVaMEV4+wuzJz3q8iHCey9HT3S4ETH37yeY+ye5ZaTjM -JFWR0ZwaE/PDA/zl2x+XiET+NmVM/CfEhDU6nhWnjaaKXMYBRjzSkngl9wo4Ije8 -gGYENm3TCxPiZDtztW1DI8CGSEHBZKGDERsgZ+kfYfdURlLfPrGVf9EXropQ7Zwp -lY7AR69usBS9BOpGkf9+IjQXBcyYrEOLaiosFIPtP7G9uHtx2y4s0gKyEu/G8mlG -WZPJJpOQ6SNl1dlNWl9vSejkJFjRBPLEoFZH56WVQElQhJ+1DfzHW8+QvUdgTq1u -UtNFxvb3+4FiYNs7ITBijeXKFXYaaGJyLoVNuqdTMgH41JKCGzZJH7wOBEtUHPxT -/7PK54rWTgqJKMo3awZXUk56nb1trDTsGqrX9YJqLVx8Q1OJUVDSdxhBBlIDFrES -x0obfZMoQLXyUIltL9IRHfM= -=G16G ------END PGP PUBLIC KEY BLOCK----- diff --git a/_site/assets/css/main.css b/_site/assets/css/main.css deleted file mode 100644 index 1b4341b..0000000 --- a/_site/assets/css/main.css +++ /dev/null @@ -1,254 +0,0 @@ -:root { - --main-bg-color: #202020; - --main-fg-color: #00B140; -} - -*, -*:before, -*:after { - -webkit-box-sizing: border-box; - -moz-box-sizing: border-box; - box-sizing: border-box; -} - -body { - height: 100%; - text-decoration-skip: ink; - color: var(--main-fg-color); - padding-top: 10px; - font-family: 'Roboto Mono', monospace; - background-color: var(--main-bg-color); - background-size: 2px 2px; - text-shadow: 0 0 1px var(--main-fg-color), 0 0 6px var(--main-fg-color); -} - -::selection { - color: var(--main-bg-color); - background: var(--main-fg-color); - text-shadow: 0 0 1px var(--main-bg-color), 0 0 6px var(--main-bg-color); -} -::-moz-selection { - color: var(--main-bg-color); - background: var(--main-fg-color); - text-shadow: 0 0 1px var(--main-bg-color), 0 0 6px var(--main-bg-color); -} - -.footer { - position: relative; - bottom: 0; - width: 100%; - padding-top: 10px; - padding-bottom: 10px; - color: rgba(47, 47, 47, 0.6) -} - -a { - cursor: default; - color: var(--main-fg-color); - text-decoration: underline 1.5px; - text-underline-offset: 2.5px; -} - -.link-decor-none { - text-decoration: none; -} - -img { - width: 100%; -} - -table { - width: 100%; -} - -table, tr, td { - border: none !important; -} - -td { - background-color: transparent; -} - -.project-item { - border: none; - vertical-align: top; - width: 50%; -} - -#navlist -{ - list-style-type: none; - margin-left: 0 !important; -} - -#navlist li -{ - display: inline; - list-style-type: none inside; - padding-right: 20px; -} - -#navlist > .active > a { - font-weight: 600; - text-decoration: none; -} - -@media (min-width: 400px) { - #nav-container { - padding: 0 6px; - } - .container-2 { - padding: 0 3px; - } -} - -@media (min-width: 550px) { - .post-container { - padding: 0; - } -} - -.author { - font-size: 1.3em; - padding-top: 20px; -} - -.tagline { - padding-top: 20px; -} - -.cursor::after { - height: 2.5rem; -} - -.center { - text-align: center; -} - -.right { - text-align: right; -} - -.justify { - text-align: justify; -} - -.twocol::first-letter { - font-size: 2.5em; -} - -.twocol { - -ms-word-break: keep-all; - word-break: keep-all; - hyphens: auto; - -webkit-hyphens: auto; - -moz-hyphens: auto; -} - -@media only screen -and (min-device-width : 768px) { - .twocol { - -moz-column-count: 2; - -moz-column-gap: 20px; - -webkit-column-count: 2; - -webkit-column-gap: 20px; - column-count: 2; - column-gap: 20px; - width: 100%; - } - .tag{ - width: 23%; - margin-right:0; - } -} - -.posts-td { - border: none; - vertical-align: top; -} - -.posts-td-time { - min-width: 100px; - white-space: nowrap; -} - -.author { - margin-bottom: 2rem; -} - -#footer-text { - font-size: 14px; -} - -.post-author { - margin-top: 4px; -} - -pre { - border: none; - max-height: 400px; - overflow-y: auto; - scrollbar-width: none; - -ms-overflow-style: none; -} - -pre::-webkit-scrollbar { - display: none; -} - -.typewriter-1 { - overflow: hidden; - white-space: nowrap; - margin: 0 auto; - animation: typing 3s steps(40, end); -} - -.typewriter-2 { - overflow: hidden; - visibility: hidden; - white-space: nowrap; - margin: 0 auto; - animation: typing 3s steps(40, end); - animation-delay: 2.5s; - animation-fill-mode: forwards; -} - -@keyframes typing { - 0% { width: 0; visibility: visible; } - 100% { width: 100%; visibility: visible; } -} - -.typewriter-2::after { - filter: brightness(0.9); - background-color: var(--main-fg-color); - box-shadow: 0 0 1px var(--main-fg-color), 0 0 6px var(--main-fg-color); - content: ''; - display: inline-block; - width: 1.3rem; - height: 1.9rem; - margin-left: -8px; - animation: cursor-blink 1s steps(1, start) infinite; - animation-delay: 3.5s; -} - -@keyframes cursor-blink { - 0% { visibility: visible; } - 50% { visibility: hidden; } - 100% { visibility: visible; } -} - -#search-box { - border-radius: 0; - border-color: var(--main-fg-color); - color: var(--main-fg-color) !important; - background-color: var(--main-bg-color); - text-shadow: 0 0 1px var(--main-fg-color), 0 0 6px var(--main-fg-color); -} - -#search-btn { - border-radius: 0; - border-color: var(--main-fg-color); - color: var(--main-fg-color); - background-color: var(--main-bg-color); - text-shadow: 0 0 1px var(--main-fg-color), 0 0 6px var(--main-fg-color); -} diff --git a/_site/assets/css/skeleton.css b/_site/assets/css/skeleton.css deleted file mode 100644 index 87b0050..0000000 --- a/_site/assets/css/skeleton.css +++ /dev/null @@ -1,372 +0,0 @@ -/* -* Skeleton V2.0.4 -* Copyright 2014, Dave Gamache -* www.getskeleton.com -* Free to use under the MIT license. -* http://www.opensource.org/licenses/mit-license.php -* 12/29/2014 -*/ - - -/* Table of contents -–––––––––––––––––––––––––––––––––––––––––––––––––– -- Grid -- Base Styles -- Typography -- Links -- Buttons -- Forms -- Lists -- Code -- Tables -- Spacing -- Utilities -- Clearing -- Media Queries -*/ - - -/* Grid -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -.container { - position: relative; - width: 100%; - max-width: 960px; - margin: 0 auto; - box-sizing: border-box; } -.column, -.columns { - width: 100%; - float: left; - box-sizing: border-box; } - -/* For devices larger than 400px */ -@media (min-width: 400px) { - .container { - padding: 0 3px; } -} - -/* For devices larger than 550px */ -@media (min-width: 550px) { - .container { - width: 80%; - padding: 0; } - .column, - .columns { - margin-left: 4%; } - .column:first-child, - .columns:first-child { - margin-left: 0; } - - .one.column, - .one.columns { width: 4.66666666667%; } - .two.columns { width: 13.3333333333%; } - .three.columns { width: 22%; } - .four.columns { width: 30.6666666667%; } - .five.columns { width: 39.3333333333%; } - .six.columns { width: 48%; } - .seven.columns { width: 56.6666666667%; } - .eight.columns { width: 65.3333333333%; } - .nine.columns { width: 74.0%; } - .ten.columns { width: 82.6666666667%; } - .eleven.columns { width: 91.3333333333%; } - .twelve.columns { width: 100%; margin-left: 0; } - - .one-third.column { width: 30.6666666667%; } - .two-thirds.column { width: 65.3333333333%; } - - .one-half.column { width: 48%; } - - /* Offsets */ - .offset-by-one.column, - .offset-by-one.columns { margin-left: 8.66666666667%; } - .offset-by-two.column, - .offset-by-two.columns { margin-left: 17.3333333333%; } - .offset-by-three.column, - .offset-by-three.columns { margin-left: 26%; } - .offset-by-four.column, - .offset-by-four.columns { margin-left: 34.6666666667%; } - .offset-by-five.column, - .offset-by-five.columns { margin-left: 43.3333333333%; } - .offset-by-six.column, - .offset-by-six.columns { margin-left: 52%; } - .offset-by-seven.column, - .offset-by-seven.columns { margin-left: 60.6666666667%; } - .offset-by-eight.column, - .offset-by-eight.columns { margin-left: 69.3333333333%; } - .offset-by-nine.column, - .offset-by-nine.columns { margin-left: 78.0%; } - .offset-by-ten.column, - .offset-by-ten.columns { margin-left: 86.6666666667%; } - .offset-by-eleven.column, - .offset-by-eleven.columns { margin-left: 95.3333333333%; } - - .offset-by-one-third.column, - .offset-by-one-third.columns { margin-left: 34.6666666667%; } - .offset-by-two-thirds.column, - .offset-by-two-thirds.columns { margin-left: 69.3333333333%; } - - .offset-by-one-half.column, - .offset-by-one-half.columns { margin-left: 52%; } - -} - - -/* Typography -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -/* NOTE -html is set to 62.5% so that all the REM measurements throughout Skeleton -are based on 10px sizing. So basically 1.5rem = 15px :) */ -html { - font-size: 62.5%; } -body { - font-size: 1.8em; /* currently ems cause chrome bug misinterpreting rems on body element */ - line-height: 1.4; -} - -h1, h2, h3, h4, h5, h6 { - margin-top: 0; - margin-bottom: 2rem; - font-weight: 300; -} - -h1 { font-size: 4.0rem; line-height: 1.2; letter-spacing: -.1rem;} -h2 { font-size: 3.6rem; line-height: 1.25; letter-spacing: -.1rem; } -h3 { font-size: 3.0rem; line-height: 1.3; letter-spacing: -.1rem; } -h4 { font-size: 2.4rem; line-height: 1.35; letter-spacing: -.08rem; } -h5 { font-size: 1.8rem; line-height: 1.5; letter-spacing: -.05rem; } -h6 { font-size: 1.5rem; line-height: 1.6; letter-spacing: 0; } - -/* Larger than phablet */ -@media (min-width: 550px) { - h1 { font-size: 5.0rem; } - h2 { font-size: 3.4rem; } - h3 { font-size: 3.0rem; } - h4 { font-size: 2.6rem; } - h5 { font-size: 2.4rem; } - h6 { font-size: 1.5rem; } -} - -p { - margin-top: 0; } - -/* Buttons -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -.button, -button, -input[type="submit"], -input[type="reset"], -input[type="button"] { - display: inline-block; - height: 38px; - padding: 0 30px; - color: #555; - text-align: center; - font-size: 11px; - font-weight: 600; - line-height: 38px; - letter-spacing: .1rem; - text-transform: uppercase; - text-decoration: none; - white-space: nowrap; - background-color: transparent; - border-radius: 4px; - border: 1px solid #bbb; - cursor: pointer; - box-sizing: border-box; } -.button:hover, -button:hover, -input[type="submit"]:hover, -input[type="reset"]:hover, -input[type="button"]:hover, -.button:focus, -button:focus, -input[type="submit"]:focus, -input[type="reset"]:focus, -input[type="button"]:focus { - color: #333; - border-color: #888; - outline: 0; } -.button.button-primary, -button.button-primary, -input[type="submit"].button-primary, -input[type="reset"].button-primary, -input[type="button"].button-primary { - color: #FFF; - background-color: #33C3F0; - border-color: #33C3F0; } -.button.button-primary:hover, -button.button-primary:hover, -input[type="submit"].button-primary:hover, -input[type="reset"].button-primary:hover, -input[type="button"].button-primary:hover, -.button.button-primary:focus, -button.button-primary:focus, -input[type="submit"].button-primary:focus, -input[type="reset"].button-primary:focus, -input[type="button"].button-primary:focus { - color: #FFF; - background-color: #1EAEDB; - border-color: #1EAEDB; } - - -/* Forms -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -input[type="email"], -input[type="number"], -input[type="search"], -input[type="text"], -input[type="tel"], -input[type="url"], -input[type="password"], -textarea, -select { - height: 38px; - padding: 6px 10px; /* The 6px vertically centers text on FF, ignored by Webkit */ - background-color: #fff; - border: 1px solid #D1D1D1; - border-radius: 4px; - box-shadow: none; - box-sizing: border-box; } -/* Removes awkward default styles on some inputs for iOS */ -input[type="email"], -input[type="number"], -input[type="search"], -input[type="text"], -input[type="tel"], -input[type="url"], -input[type="password"], -textarea { - -webkit-appearance: none; - -moz-appearance: none; - appearance: none; } -textarea { - min-height: 65px; - padding-top: 6px; - padding-bottom: 6px; } -input[type="email"]:focus, -input[type="number"]:focus, -input[type="search"]:focus, -input[type="text"]:focus, -input[type="tel"]:focus, -input[type="url"]:focus, -input[type="password"]:focus, -textarea:focus, -select:focus { - border: 1px solid #33C3F0; - outline: 0; } -label, -legend { - display: block; - margin-bottom: .5rem; - font-weight: 600; } -fieldset { - padding: 0; - border-width: 0; } -input[type="checkbox"], -input[type="radio"] { - display: inline; } -label > .label-body { - display: inline-block; - margin-left: .5rem; - font-weight: normal; } - - -/* Lists -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -ul { - list-style: circle outside; } -ol { - list-style: decimal outside; } -ol, ul { - padding-left: 0; - margin-top: 0; - margin-left: 1em; } -ul ul, -ul ol, -ol ol, -ol ul { - margin: 1.5rem 0 1.5rem 3rem; - font-size: 90%; } -li { - margin-bottom: 0.6rem; } - -ol { - margin-left: 1.8em; } - -/* Code -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -code { - padding: .2rem .5rem; - margin: 0 .2rem; - font-size: 95%; - white-space: nowrap; - border-radius: 4px; } - -pre > code { - display: block; - padding: 1rem 1.5rem; - white-space: pre; } - - -/* Tables -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -th, -td { - padding: 12px 15px; - text-align: left; - border-bottom: 1px solid #E1E1E1; } -th:first-child, -td:first-child { - padding-left: 0; } -th:last-child, -td:last-child { - padding-right: 0; } - - -/* Spacing -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -button, -.button { - margin-bottom: 1rem; } -input, -textarea, -select, -fieldset { - margin-bottom: 1.5rem; } -pre, -blockquote, -dl, -figure, -table, -p, -ul, -ol, -form { - margin-bottom: 1.5rem; } - - -/* Utilities -–––––––––––––––––––––––––––––––––––––––––––––––––– */ -.u-full-width { - width: 100%; - box-sizing: border-box; } -.u-max-full-width { - max-width: 100%; - box-sizing: border-box; } -.u-pull-right { - float: right; } -.u-pull-left { - float: left; } - -/* Clearing -–––––––––––––––––––––––––––––––––––––––––––––––––– */ - -/* Self Clearing Goodness */ -.container:after, -.row:after, -.u-cf { - content: ""; - display: table; - clear: both; } - diff --git a/_site/assets/lic/im_fell_english_font.txt b/_site/assets/lic/im_fell_english_font.txt deleted file mode 100644 index 2318e86..0000000 --- a/_site/assets/lic/im_fell_english_font.txt +++ /dev/null @@ -1,93 +0,0 @@ -Copyright (c) 2010, Igino Marini (mail@iginomarini.com)
-
-This Font Software is licensed under the SIL Open Font License, Version 1.1.
-This license is copied below, and is also available with a FAQ at:
-https://openfontlicense.org
-
-
------------------------------------------------------------
-SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
------------------------------------------------------------
-
-PREAMBLE
-The goals of the Open Font License (OFL) are to stimulate worldwide
-development of collaborative font projects, to support the font creation
-efforts of academic and linguistic communities, and to provide a free and
-open framework in which fonts may be shared and improved in partnership
-with others.
-
-The OFL allows the licensed fonts to be used, studied, modified and
-redistributed freely as long as they are not sold by themselves. The
-fonts, including any derivative works, can be bundled, embedded,
-redistributed and/or sold with any software provided that any reserved
-names are not used by derivative works. The fonts and derivatives,
-however, cannot be released under any other type of license. The
-requirement for fonts to remain under this license does not apply
-to any document created using the fonts or their derivatives.
-
-DEFINITIONS
-"Font Software" refers to the set of files released by the Copyright
-Holder(s) under this license and clearly marked as such. This may
-include source files, build scripts and documentation.
-
-"Reserved Font Name" refers to any names specified as such after the
-copyright statement(s).
-
-"Original Version" refers to the collection of Font Software components as
-distributed by the Copyright Holder(s).
-
-"Modified Version" refers to any derivative made by adding to, deleting,
-or substituting -- in part or in whole -- any of the components of the
-Original Version, by changing formats or by porting the Font Software to a
-new environment.
-
-"Author" refers to any designer, engineer, programmer, technical
-writer or other person who contributed to the Font Software.
-
-PERMISSION & CONDITIONS
-Permission is hereby granted, free of charge, to any person obtaining
-a copy of the Font Software, to use, study, copy, merge, embed, modify,
-redistribute, and sell modified and unmodified copies of the Font
-Software, subject to the following conditions:
-
-1) Neither the Font Software nor any of its individual components,
-in Original or Modified Versions, may be sold by itself.
-
-2) Original or Modified Versions of the Font Software may be bundled,
-redistributed and/or sold with any software, provided that each copy
-contains the above copyright notice and this license. These can be
-included either as stand-alone text files, human-readable headers or
-in the appropriate machine-readable metadata fields within text or
-binary files as long as those fields can be easily viewed by the user.
-
-3) No Modified Version of the Font Software may use the Reserved Font
-Name(s) unless explicit written permission is granted by the corresponding
-Copyright Holder. This restriction only applies to the primary font name as
-presented to the users.
-
-4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
-Software shall not be used to promote, endorse or advertise any
-Modified Version, except to acknowledge the contribution(s) of the
-Copyright Holder(s) and the Author(s) or with their explicit written
-permission.
-
-5) The Font Software, modified or unmodified, in part or in whole,
-must be distributed entirely under this license, and must not be
-distributed under any other license. The requirement for fonts to
-remain under this license does not apply to any document created
-using the Font Software.
-
-TERMINATION
-This license becomes null and void if any of the above conditions are
-not met.
-
-DISCLAIMER
-THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
-MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
-OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
-COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
-DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
-OTHER DEALINGS IN THE FONT SOFTWARE.
diff --git a/_site/assets/lic/marat.txt b/_site/assets/lic/marat.txt deleted file mode 100644 index 75c9060..0000000 --- a/_site/assets/lic/marat.txt +++ /dev/null @@ -1,21 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2017 Jean-Philippe Coene - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. diff --git a/_site/assets/lic/skeleton.txt b/_site/assets/lic/skeleton.txt deleted file mode 100644 index 32a62b3..0000000 --- a/_site/assets/lic/skeleton.txt +++ /dev/null @@ -1,21 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2011-2014 Dave Gamache - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE.
\ No newline at end of file diff --git a/_site/cgi-bin/find.cgi b/_site/cgi-bin/find.cgi deleted file mode 100644 index d3c6cc4..0000000 --- a/_site/cgi-bin/find.cgi +++ /dev/null @@ -1,246 +0,0 @@ -#!/usr/bin/perl - -use strict; -use warnings; -use Storable qw(retrieve); -use Encode qw(decode_utf8 encode_utf8); -use URI::Escape qw(uri_unescape); -use HTML::Escape qw(escape_html); - -# Configuration -my $max_parallel = 50; # Max parallel search requests -my $lock_timeout = 30; # Seconds before dropping stale locks -my $max_results = 20; # Max search results to display -my $sa_file = 'sa.bin'; # Suffix Array index -my $cp_file = 'corpus.bin'; # Raw text corpus -my $map_file = 'file_map.dat'; # File metadata -my $lock_dir = '/tmp/search_locks'; # Semaphore directory - -# Concurrency control -mkdir $lock_dir, 0777 unless -d $lock_dir; -my $active_count = 0; -my $now = time(); - -opendir(my $dh, $lock_dir); -while (my $file = readdir($dh)) { - next unless $file =~ /\.lock$/; - my $path = "$lock_dir/$file"; - my $mtime = (stat($path))[9] || 0; - ($now - $mtime > $lock_timeout) ? unlink($path) : $active_count++; -} -closedir($dh); - -# Template variables -my $year = (localtime)[5] + 1900; -my $search_text = ''; - -# Busy check -if ($active_count >= $max_parallel) { - print "Content-Type: text/html\n\n"; - render_html("<p>Server busy. Please try again in a few seconds.</p>", "", $year); - exit; -} - -# Create semaphore lock -my $lock_file = "$lock_dir/$$.lock"; -open(my $fh_lock, '>', $lock_file); - -# Query decoding -if (($ENV{QUERY_STRING} || '') =~ /^q=([^&]*)/) { - my $raw_q = $1; - $raw_q =~ tr/+/ /; - $search_text = uri_unescape($raw_q); - $search_text = decode_utf8($search_text // ""); - $search_text =~ s/\P{Print}//g; - $search_text = substr($search_text, 0, 64); - $search_text =~ s/^\s+|\s+$//g; -} - -my $safe_search_text = escape_html($search_text); - -print "Content-Type: text/html\n\n"; - -if ($search_text eq '') { - final_output("<p>Please enter a search term above.</p>"); -} - -# Binary search -my @results; -my $query = encode_utf8(lc($search_text)); -my $query_len = length($query); - -if (-f $sa_file && -f $cp_file) { - open(my $fh_sa, '<', $sa_file) or die $!; - open(my $fh_cp, '<', $cp_file) or die $!; - binmode($fh_sa); - binmode($fh_cp); - - my $file_map = retrieve($map_file); - my $total_suffixes = (-s $sa_file) / 4; - - # Find left boundary - my ($low, $high) = (0, $total_suffixes - 1); - my $first_hit = -1; - - while ($low <= $high) { - my $mid = int(($low + $high) / 2); - seek($fh_sa, $mid * 4, 0); - read($fh_sa, my $bin_off, 4); - my $off = unpack("L", $bin_off); - seek($fh_cp, $off, 0); - read($fh_cp, my $text, $query_len); - - my $cmp = $text cmp $query; - if ($cmp >= 0) { - $first_hit = $mid if $cmp == 0; - $high = $mid - 1; - } else { - $low = $mid + 1; - } - } - - # Collect results if found - if ($first_hit != -1) { - my $last_hit = $first_hit; - ($low, $high) = ($first_hit, $total_suffixes - 1); - - # Find right boundary - while ($low <= $high) { - my $mid = int(($low + $high) / 2); - seek($fh_sa, $mid * 4, 0); - read($fh_sa, my $bin_off, 4); - my $off = unpack("L", $bin_off); - seek($fh_cp, $off, 0); - read($fh_cp, my $text, $query_len); - - if (($text cmp $query) <= 0) { - $last_hit = $mid if $text eq $query; - $low = $mid + 1; - } else { - $high = $mid - 1; - } - } - - my %seen; - for my $i ($first_hit .. $last_hit) { - seek($fh_sa, $i * 4, 0); - read($fh_sa, my $bin_off, 4); - my $offset = unpack("L", $bin_off); - - foreach my $m (@$file_map) { - if ($offset >= $m->{start} && $offset < $m->{end}) { - if (!$seen{$m->{path}}++) { - # Capture more than 50 chars for trimming - my $snip_start = ($offset - 30 < $m->{start}) ? $m->{start} : $offset - 30; - my $max_len = $m->{end} - $snip_start; - my $read_len = ($max_len > 120) ? 120 : $max_len; - seek($fh_cp, $snip_start, 0); - read($fh_cp, my $raw_snip, $read_len); - - my $snippet = decode_utf8($raw_snip, Encode::FB_QUIET) // $raw_snip; - $snippet =~ s/\s+/ /g; # Normalize whitespace - - # Trim start: Partial word removal - if ($snip_start > $m->{start}) { - $snippet =~ s/^[^\s]*\s//; - } - - # Trim end: Length limit and partial word removal - my $has_more = 0; - if (length($snippet) > 50) { - $snippet = substr($snippet, 0, 50); - $has_more = 1 if $snippet =~ s/\s+[^\s]*$//; - } - elsif ($snip_start + $read_len < $m->{end}) { - # This check handles snippets that are naturally short but - # there's still more text in the article we didn't read - $has_more = 1; - } - - # Cleanup & capitalize - $snippet = ucfirst($snippet); - $snippet = escape_html($snippet) . ($has_more ? "..." : ""); - - my $clean_path = $m->{path}; - $clean_path =~ s|^\.\./_site/||; - - push @results, { - path => $clean_path, - title => $m->{title},, - snippet => $snippet - }; - } - last; - } - } - last if scalar @results >= $max_results; - } - } - close($fh_sa); - close($fh_cp); -} - -# --- Formatting & Output --- -my $list_html = ""; -if (@results == 0) { - $list_html = "<p>No results found for \"<b>$safe_search_text</b>\".</p>"; -} else { - $list_html = "<ul>" . join('', map { - "<li><a href=\"/$_->{path}\">$_->{title}</a><br><small>$_->{snippet}</small></li>" - } @results) . "</ul>"; -} - -final_output($list_html); - -# --- Helpers --- -sub final_output { - my ($content) = @_; - render_html($content, $safe_search_text, $year); - if ($fh_lock) { close($fh_lock); unlink($lock_file); } - exit; -} - -sub render_html { - my ($content, $q_val, $yr) = @_; - print <<"HTML"; -<!DOCTYPE html> -<html lang="en-us"> -<head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Search</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> -<body> - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - <li><a href="/" class="link-decor-none">hme</a></li> - <li><a href="/projects/" class="link-decor-none">poc</a></li> - <li><a href="/about/" class="link-decor-none">abt</a></li> - <li class="active"><a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a></li> - <li><a href="/feed.xml" class="link-decor-none">rss</a></li> - </ul> - </div> - <main class="container" id="main"> - <div class="container"> - <h2>Search</h2> - <form action="" method="GET"> - <input id="search-box" type="text" name="q" value="$q_val"> - <input id="search-btn" type="submit" value="Search"> - </form> - $content - </div> - </main> - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - $yr</p> - </div> - </div> - </div> -</body> -</html> -HTML -} - diff --git a/_site/feed.xml b/_site/feed.xml deleted file mode 100644 index cab076b..0000000 --- a/_site/feed.xml +++ /dev/null @@ -1 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="4.4.1">Jekyll</generator><link href="http://localhost:4000/feed.xml" rel="self" type="application/atom+xml" /><link href="http://localhost:4000/" rel="alternate" type="text/html" /><updated>2026-01-09T16:44:28+08:00</updated><id>http://localhost:4000/feed.xml</id><title type="html">ASCIIMX | Log</title><author><name>W. D. Sadeep Madurange</name></author><entry><title type="html">Full-text search: SA lookup</title><link href="http://localhost:4000/log/site-search/" rel="alternate" type="text/html" title="Full-text search: SA lookup" /><published>2026-01-03T00:00:00+08:00</published><updated>2026-01-03T00:00:00+08:00</updated><id>http://localhost:4000/log/site-search</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Article count is growing. Need a way to search.]]></summary></entry><entry><title type="html">Matrix Rain: 2025 refactor</title><link href="http://localhost:4000/log/matrix-digital-rain/" rel="alternate" type="text/html" title="Matrix Rain: 2025 refactor" /><published>2025-12-21T00:00:00+08:00</published><updated>2025-12-21T00:00:00+08:00</updated><id>http://localhost:4000/log/matrix-digital-rain</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[The 2022 version worked but had some loose ends. Unicode support was inflexible–couldn’t mix ASCII with Katakana; Phosphor decay was stored in a separate array when it should’ve been packed with RGB; Code was harder to read than it needed to be.]]></summary></entry><entry><title type="html">Fingerprint door lock (LP)</title><link href="http://localhost:4000/log/fpm-door-lock-lp/" rel="alternate" type="text/html" title="Fingerprint door lock (LP)" /><published>2025-08-18T00:00:00+08:00</published><updated>2025-08-18T00:00:00+08:00</updated><id>http://localhost:4000/log/fpm-door-lock-lp</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Second iteration of the RF door lock. Old version worked but drew too much quiescent current. Sensor and servo pulled 13.8mA and 4.6mA idle. Linear regulators were a disaster. Battery didn’t last 24 hours.]]></summary></entry><entry><title type="html">High-side MOSFET switching</title><link href="http://localhost:4000/log/mosfet-switches/" rel="alternate" type="text/html" title="High-side MOSFET switching" /><published>2025-06-22T00:00:00+08:00</published><updated>2025-06-22T00:00:00+08:00</updated><id>http://localhost:4000/log/mosfet-switches</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Needed low-power switching for the fingerprint door lock. Servo and FPM draw high quiescent current–had to cut power electronically during sleep. MOSFETs can do this.]]></summary></entry><entry><title type="html">ATmega328P at 3.3V and 5V</title><link href="http://localhost:4000/log/arduino-uno/" rel="alternate" type="text/html" title="ATmega328P at 3.3V and 5V" /><published>2025-06-10T00:00:00+08:00</published><updated>2025-06-10T00:00:00+08:00</updated><id>http://localhost:4000/log/arduino-uno</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Quick reference for wiring ATmega328P ICs at 5V and 3.3V. 5V uses 16MHz crystal, 3.3V uses 8MHz.]]></summary></entry><entry><title type="html">Fingerprint door lock (RF)</title><link href="http://localhost:4000/log/fpm-door-lock-rf/" rel="alternate" type="text/html" title="Fingerprint door lock (RF)" /><published>2025-06-05T00:00:00+08:00</published><updated>2025-06-05T00:00:00+08:00</updated><id>http://localhost:4000/log/fpm-door-lock-rf</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Wanted to unlock door with fingerprint, wirelessly to avoid drilling.]]></summary></entry><entry><title type="html">Bumblebee: web script synthesizer</title><link href="http://localhost:4000/log/bumblebee/" rel="alternate" type="text/html" title="Bumblebee: web script synthesizer" /><published>2025-04-02T00:00:00+08:00</published><updated>2025-04-02T00:00:00+08:00</updated><id>http://localhost:4000/log/bumblebee</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Browser session-to-code conversion. For work. Pre-LLM.]]></summary></entry><entry><title type="html">ATSAM3X8E bare-metal notes</title><link href="http://localhost:4000/log/arduino-due/" rel="alternate" type="text/html" title="ATSAM3X8E bare-metal notes" /><published>2024-09-16T00:00:00+08:00</published><updated>2024-09-16T00:00:00+08:00</updated><id>http://localhost:4000/log/arduino-due</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Bypassing ATSAM3X8E (Due) bootloader via Serial Wire Debug (SWD).]]></summary></entry><entry><title type="html">Etlas: e-paper dashboard</title><link href="http://localhost:4000/log/etlas/" rel="alternate" type="text/html" title="Etlas: e-paper dashboard" /><published>2024-09-05T00:00:00+08:00</published><updated>2024-09-05T00:00:00+08:00</updated><id>http://localhost:4000/log/etlas</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[Repurposed the e-reader into something for regular use. News, stocks, weather dashboard. ESP32 NodeMCU D1 + 7.5” Waveshare e-paper + DHT22 sensor.]]></summary></entry><entry><title type="html">512KB e-reader</title><link href="http://localhost:4000/log/e-reader/" rel="alternate" type="text/html" title="512KB e-reader" /><published>2023-10-24T00:00:00+08:00</published><updated>2023-10-24T00:00:00+08:00</updated><id>http://localhost:4000/log/e-reader</id><author><name>W. D. Sadeep Madurange</name></author><summary type="html"><![CDATA[First project with e-paper.]]></summary></entry></feed>
\ No newline at end of file diff --git a/_site/index.html b/_site/index.html deleted file mode 100644 index 064cab7..0000000 --- a/_site/index.html +++ /dev/null @@ -1,219 +0,0 @@ -<!doctype html> -<html lang="en-us"> - - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>ASCIIMX</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li class="active"> - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main class="container" id="main"><div class="container"> - - <h2 class="center">ASCIIMX</h2> - <h5 class="center typewriter-1"> - $ cu -l /dev/asciimx - </h5> - <h5 class="center typewriter-2"> - <span>UNIX / EMBED / -O3 </span> - <span class="cursor"></span> - </h5> - - <br> - <br> - - <div class="articles"> - <table class="posts-table"> - - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/site-search/" class="link-decor-none">Full-text search: SA lookup</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2026-01-03 00:00:00 +0800">2026-01-03</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/matrix-digital-rain/" class="link-decor-none">Matrix Rain: 2025 refactor</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2025-12-21 00:00:00 +0800">2025-12-21</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/fpm-door-lock-lp/" class="link-decor-none">Fingerprint door lock (LP)</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2025-08-18 00:00:00 +0800">2025-08-18</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/mosfet-switches/" class="link-decor-none">High-side MOSFET switching</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2025-06-22 00:00:00 +0800">2025-06-22</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/arduino-uno/" class="link-decor-none">ATmega328P at 3.3V and 5V</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2025-06-10 00:00:00 +0800">2025-06-10</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/fpm-door-lock-rf/" class="link-decor-none">Fingerprint door lock (RF)</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2025-06-05 00:00:00 +0800">2025-06-05</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/bumblebee/" class="link-decor-none">Bumblebee: web script synthesizer</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2025-04-02 00:00:00 +0800">2025-04-02</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/arduino-due/" class="link-decor-none">ATSAM3X8E bare-metal notes</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2024-09-16 00:00:00 +0800">2024-09-16</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/etlas/" class="link-decor-none">Etlas: e-paper dashboard</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2024-09-05 00:00:00 +0800">2024-09-05</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/e-reader/" class="link-decor-none">512KB e-reader</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2023-10-24 00:00:00 +0800">2023-10-24</time> - </span> - </td> - </tr> - - - - <tr> - <td class="posts-td posts-td-link"> - <a href="/log/neo4j-a-star-search/" class="link-decor-none">Neo4J path traversal: A* optimization</a> - </td> - <td class="posts-td posts-td-time"> - <span class="post-meta"> - <time datetime="2018-03-06 00:00:00 +0800">2018-03-06</time> - </span> - </td> - </tr> - - - - </table> - </div> - - -</div> -</main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/arduino-due/connections.jpeg b/_site/log/arduino-due/connections.jpeg Binary files differdeleted file mode 100644 index 081e6d4..0000000 --- a/_site/log/arduino-due/connections.jpeg +++ /dev/null diff --git a/_site/log/arduino-due/index.html b/_site/log/arduino-due/index.html deleted file mode 100644 index ed49e78..0000000 --- a/_site/log/arduino-due/index.html +++ /dev/null @@ -1,114 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>ATSAM3X8E bare-metal notes</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">ATSAM3X8E BARE-METAL NOTES</h2> - <h5 class="center">16 SEPTEMBER 2024</h5> - <br> - <div class="twocol justify"><p>Bypassing ATSAM3X8E (Due) bootloader via Serial Wire Debug (SWD).</p> - -<p>Toolchain: ST-LINK/V2 programmer, OpenOCD, ARM GNU Compiler Toolchain.</p> - -<p>ARM chips boot into 0x00000. GPNVM bits map one of ROM, flash0, flash1 to -0x00000:</p> - -<ul> - <li>GPNVM1=0 → ROM (default).</li> - <li>GPNVM1=1 and GPNVM2=0 → flash0.</li> - <li>GPNVM1=1 and GPNVM2=1 → flash1.</li> -</ul> - -<p>By default, control jumps to Atmel’s SAM-BA bootloader in ROM. To bypass, set -GPNVM1=1 and place vector table at 0x80000 (flash0).</p> - -<p>Connect ST-LINK/v2 to Arduino Due’s DEBUG port:</p> - -<table style="border: none; width: 100%;"> - <tr style="border: none;"> - <td style="border: none; width: 50%; vertical-align: top; background-color: transparent;"> - <img src="schematic.png" alt="Pinout" style="width: 100%" /> - <p style="text-align: center;">Wiring</p> - </td> - <td style="border: none; width: 50%; vertical-align: top; background-color: transparent;"> - <img src="connections.jpeg" alt="Circuit" style="width: 100%" /> - <p style="text-align: center;">Arduino Due</p> - </td> - </tr> -</table> - -<p>Remap memory:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ openocd -f openocd-due.cfg -$ telnet localhost 4444 - > halt - > at91sam3 gpnvm show - > at91sam3 gpnvm set 1 - > at91sam3 gpnvm show -</code></pre></div></div> - -<p>Full command list is in OpenOCD manual AT91SAM3 (flash driver section).</p> - -<p>Compile and upload program:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ arm-none-eabi-gcc -mcpu=cortex-m3 -mthumb -T script.ld \ - -nostartfiles \ - -nostdlib \ - -o a.elf main.c -$ openocd -f openocd-due.cfg -c "program a.elf verify reset exit" -</code></pre></div></div> - -<p>Commit: -<a href="https://git.asciimx.com/bare-metal-arduino-due/commit/?id=318496925ca76668dd9d63c3d060376f489276f8">3184969</a></p> - -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/arduino-due/schematic.png b/_site/log/arduino-due/schematic.png Binary files differdeleted file mode 100644 index 62ddadd..0000000 --- a/_site/log/arduino-due/schematic.png +++ /dev/null diff --git a/_site/log/arduino-due/source.tar.gz b/_site/log/arduino-due/source.tar.gz Binary files differdeleted file mode 100644 index 496567b..0000000 --- a/_site/log/arduino-due/source.tar.gz +++ /dev/null diff --git a/_site/log/arduino-uno/3v3.Makefile b/_site/log/arduino-uno/3v3.Makefile deleted file mode 100644 index 4ca89d4..0000000 --- a/_site/log/arduino-uno/3v3.Makefile +++ /dev/null @@ -1,46 +0,0 @@ -CC = avr-gcc -MCU = atmega328p -PORT = /dev/cuaU0 -TARGET = app - -SRC = main.c -OBJ = $(SRC:.c=.o) - -CFLAGS = -std=gnu99 -CFLAGS += -Os -CFLAGS += -Wall -CFLAGS += -mmcu=$(MCU) -CFLAGS += -DBAUD=57600 -CFLAGS += -DF_CPU=8000000UL -CFLAGS += -ffunction-sections -fdata-sections - -LDFLAGS = -mmcu=$(MCU) -LDFLAGS += -Wl,--gc-sections - -HEX_FLAGS = -O ihex -HEX_FLAGS += -j .text -j .data - -AVRDUDE_FLAGS = -p $(MCU) -AVRDUDE_FLAGS += -c arduino -AVRDUDE_FLAGS += -b 57600 -AVRDUDE_FLAGS += -P $(PORT) -AVRDUDE_FLAGS += -D -U - -%.o: %.c - $(CC) $(CFLAGS) -c -o $@ $< - -elf: $(OBJ) - $(CC) $(LDFLAGS) $(OBJ) -o $(TARGET).elf - -hex: elf - avr-objcopy $(HEX_FLAGS) $(TARGET).elf $(TARGET).hex - -upload: hex - avrdude $(AVRDUDE_FLAGS) flash:w:$(TARGET).hex:i - -.PHONY: clean - -clean: - rm -f *.o *.elf *.hex - - diff --git a/_site/log/arduino-uno/Makefile b/_site/log/arduino-uno/Makefile deleted file mode 100644 index 9db7b09..0000000 --- a/_site/log/arduino-uno/Makefile +++ /dev/null @@ -1,43 +0,0 @@ -CC = avr-gcc -MCU = atmega328p -PORT = /dev/cuaU0 -TARGET = app - -SRC = main.c -OBJ = $(SRC:.c=.o) - -CFLAGS = -std=gnu99 -CFLAGS += -Os -CFLAGS += -Wall -CFLAGS += -mmcu=$(MCU) -CFLAGS += -DBAUD=115200 -CFLAGS += -DF_CPU=16000000UL -CFLAGS += -ffunction-sections -fdata-sections - -LDFLAGS = -mmcu=$(MCU) -LDFLAGS += -Wl,--gc-sections - -HEX_FLAGS = -O ihex -HEX_FLAGS += -j .text -j .data - -AVRDUDE_FLAGS = -p $(MCU) -AVRDUDE_FLAGS += -c arduino -AVRDUDE_FLAGS += -P $(PORT) -AVRDUDE_FLAGS += -D -U - -%.o: %.c - $(CC) $(CFLAGS) -c -o $@ $< - -elf: $(OBJ) - $(CC) $(LDFLAGS) $(OBJ) -o $(TARGET).elf - -hex: elf - avr-objcopy $(HEX_FLAGS) $(TARGET).elf $(TARGET).hex - -upload: hex - avrdude $(AVRDUDE_FLAGS) flash:w:$(TARGET).hex:i - -.PHONY: clean - -clean: - rm *.o *.elf *.hex diff --git a/_site/log/arduino-uno/breadboard.jpeg b/_site/log/arduino-uno/breadboard.jpeg Binary files differdeleted file mode 100644 index bd74907..0000000 --- a/_site/log/arduino-uno/breadboard.jpeg +++ /dev/null diff --git a/_site/log/arduino-uno/index.html b/_site/log/arduino-uno/index.html deleted file mode 100644 index 3eee3a3..0000000 --- a/_site/log/arduino-uno/index.html +++ /dev/null @@ -1,108 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>ATmega328P at 3.3V and 5V</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">ATMEGA328P AT 3.3V AND 5V</h2> - <h5 class="center">10 JUNE 2025</h5> - <br> - <div class="twocol justify"><p>Quick reference for wiring ATmega328P ICs at 5V and 3.3V. 5V uses 16MHz -crystal, 3.3V uses 8MHz.</p> - -<table style="border: none; width: 100%;"> - <tr style="border: none;"> - <td style="border: none; width: 50%; vertical-align: top;"> - <img src="pinout.png" alt="Pinout" style="width: 100%" /> - <p style="text-align: center;">Pinout</p> - </td> - <td style="border: none; width: 50%; vertical-align: top;"> - <img src="breadboard.jpeg" alt="Circuit" style="width: 100%" /> - <p style="text-align: center;">Breadboard</p> - </td> - </tr> -</table> - -<h2 id="5v-16mhz">5V-16MHz</h2> - -<p>Standard setup. How Arduino Uno boards are wired.</p> - -<p>Connections: Pin 1 → 5V via 10kΩ resistor. Pins 9/10 → 16MHz crystal via 22pF -capacitors to ground. Pins 7/20/21 → 5V supply. Pins 8/22 → ground. Add 0.1μF -decoupling caps between pins 7/20/21 and ground.</p> - -<p>Sample Makefile: <a href="Makefile">Makefile</a></p> - -<h2 id="33v-8mhz">3.3V-8MHz</h2> - -<p>Electrical connections identical to 5V circuit. Replace 5V with 3.3V supply, -16MHz crystal with 8MHz.</p> - -<p>Problem: ATmega328P ships configured for 5V. Must modify fuses (BOD level, -etc.) and replace bootloader. Standard Arduino bootloader expects 16MHz—needs -8MHz version.</p> - -<p>Solution: Use Arduino Uno as ISP. Upload ‘ArduinoISP’ sketch from Arduino IDE. -Connect SPI pins (ATmega328P ↔ Uno), Uno’s SS pin → ATmega328P RESET pin. Power -ATmega328P from Uno’s 5V pin during programming.</p> - -<p>Arduino IDE: Select ‘ATmega328P (3.3V, 8MHz)’ processor, ‘Arduino as ISP’ -programmer. Burn bootloader via tools menu.</p> - -<p>Sample Makefile (8MHz): <a href="3v3.Makefile">Makefile.3v3</a></p> - -<h2 id="remarks">Remarks</h2> - -<p>Don’t connect AREF (pin 21) to V<sub>cc</sub> if using ADC with internal 1.1V -or AV<sub>cc</sub> reference. See datasheet section 23.5.2.</p> - -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/arduino-uno/pinout.png b/_site/log/arduino-uno/pinout.png Binary files differdeleted file mode 100644 index 59acfbc..0000000 --- a/_site/log/arduino-uno/pinout.png +++ /dev/null diff --git a/_site/log/bumblebee/bee.mp4 b/_site/log/bumblebee/bee.mp4 Binary files differdeleted file mode 100644 index 835600d..0000000 --- a/_site/log/bumblebee/bee.mp4 +++ /dev/null diff --git a/_site/log/bumblebee/index.html b/_site/log/bumblebee/index.html deleted file mode 100644 index 984187b..0000000 --- a/_site/log/bumblebee/index.html +++ /dev/null @@ -1,85 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Bumblebee: web script synthesizer</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">BUMBLEBEE: WEB SCRIPT SYNTHESIZER</h2> - <h5 class="center">02 APRIL 2025</h5> - <br> - <div class="twocol justify"><p>Browser session-to-code conversion. For work. Pre-LLM.</p> - -<video style="max-width:100%; margin-bottom: 10px" controls="" poster="poster.png"> - <source src="bee.mp4" type="video/mp4" /> -</video> - -<p>Quality of scripts are pitiful.</p> - -<p>Created tool to generate them real-time (as the user browses the web).</p> - -<p>Architecture: C# WinForms host, embedded WebView2 browser, Scintilla.NET -editor.</p> - -<p>Implementation:</p> - -<ul> - <li>Interception: Injected JS hooks + internal browser events.</li> - <li>Transformation: Event → Token → Instruction table → String.</li> - <li>Optimization: Parallel event/text lists.</li> - <li>Two-way binding of code to Scintilla editor.</li> -</ul> - -<p>NOTE: Abstract syntax trees.</p> - -<p>Script generation: minutes/hours → seconds.</p> - -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/bumblebee/poster.png b/_site/log/bumblebee/poster.png Binary files differdeleted file mode 100644 index 6dc955e..0000000 --- a/_site/log/bumblebee/poster.png +++ /dev/null diff --git a/_site/log/bumblebee/thumb_sm.png b/_site/log/bumblebee/thumb_sm.png Binary files differdeleted file mode 100644 index f7cfbf3..0000000 --- a/_site/log/bumblebee/thumb_sm.png +++ /dev/null diff --git a/_site/log/e-reader/circuit.svg b/_site/log/e-reader/circuit.svg deleted file mode 100644 index fd7508b..0000000 --- a/_site/log/e-reader/circuit.svg +++ /dev/null @@ -1,145 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<!-- Generator: Circuit Diagram, cdlibrary.dll 4.0.0.0 --> -<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> -<svg version="1.1" width="680" height="360" xmlns="http://www.w3.org/2000/svg"> - 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\ No newline at end of file diff --git a/_site/log/e-reader/ereader.mp4 b/_site/log/e-reader/ereader.mp4 Binary files differdeleted file mode 100644 index 89e05eb..0000000 --- a/_site/log/e-reader/ereader.mp4 +++ /dev/null diff --git a/_site/log/e-reader/index.html b/_site/log/e-reader/index.html deleted file mode 100644 index 13b4efa..0000000 --- a/_site/log/e-reader/index.html +++ /dev/null @@ -1,117 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>512KB e-reader</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">512KB E-READER</h2> - <h5 class="center">24 OCTOBER 2023</h5> - <br> - <div class="twocol justify"><p>First project with e-paper.</p> - -<video style="max-width:100%;" controls="" poster="poster.png"> - <source src="ereader.mp4" type="video/mp4" /> -</video> - -<p>ESP-WROOM-32, 7.5” Waveshare e-paper display, three-button interface -(prev/next/sleep).</p> - -<p>Memory: 512KB SRAM + 4MB flash. Internal flash unsuitable for storing books due -to P/E cycle limit. Used HTTP Range requests to stream them on-demand. -Progress saved to RTC memory to survive deep sleep without flash wear.</p> - -<p>PDFs are rasterized and stored as sequences of bitmaps on a server. 1 byte = 8 -pixels, 1 page = 48KB (display resolution), headerless. Optimized for Range -requests without server-side logic:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>int r0 = ((page_n - 1) * PAGE_SIZE); -int rn = page_n * PAGE_SIZE - 1; - -int n = snprintf(NULL, 0, "bytes=%d-%d", r0, rn) + 1; -char *buf = malloc(sizeof(char) * n); -snprintf(buf, n, "bytes=%d-%d", r0, rn); - -esp_http_client_set_header(http_client, "Range", buf); -esp_http_client_perform(http_client); -</code></pre></div></div> - -<p>Three pages (prev/current/next) held in a buffer—maximum possible. Upon -request, embedded software cycles the buffer, updates the screen, prefetches -the next page.</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>c_page_num++; -pg.page_num = c_page_num + 2; -pg.page_buf = pages[(c_page_num + 1) % PAGE_LEN]; - -xSemaphoreGive(mutex); -xQueueSend(http_evt_queue, &pg, portMAX_DELAY); - -epd_draw_async(pages[c_page_num % PAGE_LEN], PAGE_SIZE); -epd_draw_await(); -</code></pre></div></div> - -<p>System isn’t as responsive as I’d hoped. Scheduling GPIO, SPI, and HTTP tasks -on a single thread causes input lag. Pinned GPIO/SPI tasks to one core and the -HTTP task to the other.</p> - -<p>Better, but screen updates block user input.</p> - -<p>Moved the SPI buffers to DMA and made the transfers async. Few more cycles -saved.</p> - -<p>Can’t think of anything else.</p> - -<p>Verdict: Functional but limited. Led to <a href="../etlas/">Etlas</a>.</p> - -<p>Commit: -<a href="https://git.asciimx.com/esp32-e-reader/commit/?id=7f691c46093933b67aab466c0ca582ace8ab73d4">7f691c4</a></p> -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/e-reader/poster.png b/_site/log/e-reader/poster.png Binary files differdeleted file mode 100644 index 1e222d2..0000000 --- a/_site/log/e-reader/poster.png +++ /dev/null diff --git a/_site/log/e-reader/source.tar.gz b/_site/log/e-reader/source.tar.gz Binary files differdeleted file mode 100644 index 3e343a7..0000000 --- a/_site/log/e-reader/source.tar.gz +++ /dev/null diff --git a/_site/log/e-reader/thumb_sm.png b/_site/log/e-reader/thumb_sm.png Binary files differdeleted file mode 100644 index 7c971e8..0000000 --- a/_site/log/e-reader/thumb_sm.png +++ /dev/null diff --git a/_site/log/etlas/circuit.svg b/_site/log/etlas/circuit.svg deleted file mode 100644 index 6255045..0000000 --- a/_site/log/etlas/circuit.svg +++ /dev/null @@ -1,105 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?> -<!-- Generator: Circuit Diagram, cdlibrary.dll 4.0.0.0 --> -<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> -<svg version="1.1" width="700" height="300" xmlns="http://www.w3.org/2000/svg"> - 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\ No newline at end of file diff --git a/_site/log/etlas/dash.jpg b/_site/log/etlas/dash.jpg Binary files differdeleted file mode 100644 index cf4efc6..0000000 --- a/_site/log/etlas/dash.jpg +++ /dev/null diff --git a/_site/log/etlas/etlas_arch.png b/_site/log/etlas/etlas_arch.png Binary files differdeleted file mode 100644 index 241e9f1..0000000 --- a/_site/log/etlas/etlas_arch.png +++ /dev/null diff --git a/_site/log/etlas/index.html b/_site/log/etlas/index.html deleted file mode 100644 index 68c19ae..0000000 --- a/_site/log/etlas/index.html +++ /dev/null @@ -1,153 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Etlas: e-paper dashboard</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">ETLAS: E-PAPER DASHBOARD</h2> - <h5 class="center">05 SEPTEMBER 2024</h5> - <br> - <div class="twocol justify"><p>Repurposed the <a href="../e-reader/">e-reader</a> into something for regular use. News, -stocks, weather dashboard. ESP32 NodeMCU D1 + 7.5” Waveshare e-paper + DHT22 -sensor.</p> - -<table style="border: none;"> - <tr style="border: none;"> - <td style="border: none;"><img src="dash.jpg" alt="front" style="width: 100%" /></td> - <td style="border: none;"><img src="pcb.jpg" alt="back" style="width: 100%" /></td> - </tr> - <tr style="border: none;"> - <td colspan="2" style="border: none;"><img src="etlas_arch.png" alt="front" style="width: 100%" /></td> - </tr> -</table> - -<p>Stocks: Two weeks EOD data from Polygon.io (max possible). Flask app on VPS -manages watchlist, relays the feed. Backend: httpd + htpasswd + slowcgi + -Flask.</p> - -<p>gui_plot_stocks() plots a stepped graph; was easier to implement, but the code -is hideous; triggers watchdog. vTaskDelay() prevents that.</p> - -<p>NOTE: Refactor. Bresenham’s?</p> - -<p>News: Channel NewsAsia RSS. MCU does the parsing. Didn’t plan to have a backend -at the time. Now that I have one for stocks, should relay the feed for -flexibility.</p> - -<p>Weather: DHT22 single-wire protocol. 26µs/50µs/70µs pulses are too fast for -standard ESP32 APIs. Bit-banged relative pulse widths (ported from <a href="https://github.com/Fonger/ESP8266-RTOS-DHT" class="external" target="_blank" rel="noopener noreferrer">ESP8266</a>):</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>static inline int dht_await_pin_state(int state, int timeout) -{ - int t; - static const uint16_t delta = 1; - - for (t = 0; t < timeout; t += delta) { - ets_delay_us(delta); - if (gpio_get_level(DHT_PIN) == state) - return t; - } - return 0; -} - -static inline int dht_get_raw_data(unsigned char buf[BUFLEN]) -{ - int rc; - unsigned char i, pwl, pwh; - - gpio_set_level(DHT_PIN, 0); - ets_delay_us(1100); - gpio_set_level(DHT_PIN, 1); - - if (!dht_await_pin_state(0, 40)) { - rc = 1; - xQueueSend(dht_evt_queue, &rc, (TickType_t) 0); - return 0; - } - if (!dht_await_pin_state(1, 80)) { - rc = 2; - xQueueSend(dht_evt_queue, &rc, (TickType_t) 0); - return 0; - } - if (!dht_await_pin_state(0, 80)) { - rc = 3; - xQueueSend(dht_evt_queue, &rc, (TickType_t) 0); - return 0; - } - - for (i = 0; i < BUFLEN; i++) { - if (!(pwl = dht_await_pin_state(1, 50))) { - rc = 4; - xQueueSend(dht_evt_queue, &rc, (TickType_t) 0); - return 0; - } - if (!(pwh = dht_await_pin_state(0, 70))) { - rc = 5; - xQueueSend(dht_evt_queue, &rc, (TickType_t) 0); - return 0; - } - buf[i] = pwh > pwl; - } - return 1; -} -</code></pre></div></div> - -<p>epd_init() stalls intermittently on first refresh() after flash. Toggling delay -values in refresh() resolves it. If the first refresh succeeds, it remains -stable. Root cause unknown–suspect noisy power supply due to powering display -via MCU.</p> - -<p>Uptime: August 2024 - January 2026</p> - -<p>Commit: -<a href="https://git.asciimx.com/etlas/commit/?id=a92c86ac1592c2137d3d1fec1668eacc2d0ca581">a92c86a</a></p> -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/etlas/pcb.jpg b/_site/log/etlas/pcb.jpg Binary files differdeleted file mode 100644 index fcb40fa..0000000 --- a/_site/log/etlas/pcb.jpg +++ /dev/null diff --git a/_site/log/etlas/schematic.svg b/_site/log/etlas/schematic.svg deleted file mode 100644 index 3070dd1..0000000 --- a/_site/log/etlas/schematic.svg +++ /dev/null @@ -1,4 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<!-- Do not edit this file with editors other than diagrams.net --> -<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> -<svg xmlns="http://www.w3.org/2000/svg" style="background-color: rgb(255, 255, 255);" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="741px" height="371px" viewBox="-0.5 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\ No newline at end of file diff --git a/_site/log/etlas/source.tar.gz b/_site/log/etlas/source.tar.gz Binary files differdeleted file mode 100644 index 8b12cf6..0000000 --- a/_site/log/etlas/source.tar.gz +++ /dev/null diff --git a/_site/log/etlas/thumb_sm.jpg b/_site/log/etlas/thumb_sm.jpg Binary files differdeleted file mode 100644 index a374879..0000000 --- a/_site/log/etlas/thumb_sm.jpg +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/breadboard.jpg b/_site/log/fpm-door-lock-lp/breadboard.jpg Binary files differdeleted file mode 100644 index 2bf47a9..0000000 --- a/_site/log/fpm-door-lock-lp/breadboard.jpg +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/footprint.png b/_site/log/fpm-door-lock-lp/footprint.png Binary files differdeleted file mode 100644 index 5511bf1..0000000 --- a/_site/log/fpm-door-lock-lp/footprint.png +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/gerber.zip b/_site/log/fpm-door-lock-lp/gerber.zip Binary files differdeleted file mode 100644 index 19a9d19..0000000 --- a/_site/log/fpm-door-lock-lp/gerber.zip +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/index.html b/_site/log/fpm-door-lock-lp/index.html deleted file mode 100644 index a39a34e..0000000 --- a/_site/log/fpm-door-lock-lp/index.html +++ /dev/null @@ -1,110 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Fingerprint door lock (LP)</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">FINGERPRINT DOOR LOCK (LP)</h2> - <h5 class="center">18 AUGUST 2025</h5> - <br> - <div class="twocol justify"><p>Second iteration of the <a href="../fpm-door-lock-rf">RF door lock</a>. Old version worked -but drew too much quiescent current. Sensor and servo pulled 13.8mA and 4.6mA -idle. Linear regulators were a disaster. Battery didn’t last 24 hours.</p> - -<video style="max-width:100%;" controls="" poster="pcb.jpg"> - <source src="video.mp4" type="video/mp4" /> -</video> - -<p>Redesigned the PCB completely. Tossed RF modules and the second MCU. Connected -R503 directly to the ATmega328P. Sensor now mounts on door exterior, servo -attaches to interior knob, MCU stays on the back to prevent tampering.</p> - -<table style="border: none; width: 100%"> - <tr style="border: none;"> - <td style="border: none; width: 49.9%; background-color: transparent; text-align: center;"> - <img src="breadboard.jpg" alt="PCB" style="width: 100%" /> - </td> - <td style="border: none; background-color: transparent; text-align: center;"> - <img src="pcb1.jpg" alt="Design" style="width: 100%" /> - </td> - </tr> - <tr style="border: none;"> - <td colspan="2" style="border: none; background-color: transparent; text-align: center;"> - <img src="footprint.png" alt="PCB footprint" style="width: 100%" /> - </td> - </tr> -</table> - -<p>PCB specs: 2-layer, 1oz copper, 0.3mm traces (1mm for power and servo). Ground -plane on bottom layer.</p> - -<p>Solved idle power draw with MOSFETs. 2N7000 and NDP6020P cut power to sensor -and servo before deep sleep. Through-hole MOSFETs that switch at 3.3V are -getting harder to find. NDP6020P already obsolete.</p> - -<p>Replaced linear regulators with MP1584EN DC-DC buck converters. No RFM–noise -isn’t a big concern. Buck’s pin breakout not great–wouldn’t fit commercial dev -boards.</p> - -<p>Squeezed more power savings by underclocking MCU to 8MHz/3.3V. Combined -with buck converters: 56% total power savings.</p> - -<p>Wake sequence: MCU activates FPM MOSFET, unlocks FPM over UART, scans and -matches fingerprint. Match triggers blue LED, servo MOSFET, PWM signal to -unlock. No match triggers red LED. MOSFETs off, back to sleep.</p> - -<p>Total power savings: 99.9% (30.6mA → 2.9μA). Verdict: Fixed.</p> - -<p>Commit: -<a href="https://git.asciimx.com/fpm-door-lock/commit/?id=75290945b2fd84b3bc108fd46419ee478eaac3ca">7529094</a> -| Gerber: <a href="gerber.zip">gerber.zip</a></p> -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/fpm-door-lock-lp/pcb.jpg b/_site/log/fpm-door-lock-lp/pcb.jpg Binary files differdeleted file mode 100644 index fbd800b..0000000 --- a/_site/log/fpm-door-lock-lp/pcb.jpg +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/pcb1.jpg b/_site/log/fpm-door-lock-lp/pcb1.jpg Binary files differdeleted file mode 100644 index 367187d..0000000 --- a/_site/log/fpm-door-lock-lp/pcb1.jpg +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/source.tar.gz b/_site/log/fpm-door-lock-lp/source.tar.gz Binary files differdeleted file mode 100644 index ef23422..0000000 --- a/_site/log/fpm-door-lock-lp/source.tar.gz +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/thumb_sm.jpg b/_site/log/fpm-door-lock-lp/thumb_sm.jpg Binary files differdeleted file mode 100644 index a8fa534..0000000 --- a/_site/log/fpm-door-lock-lp/thumb_sm.jpg +++ /dev/null diff --git a/_site/log/fpm-door-lock-lp/video.mp4 b/_site/log/fpm-door-lock-lp/video.mp4 Binary files differdeleted file mode 100644 index a907a9b..0000000 --- a/_site/log/fpm-door-lock-lp/video.mp4 +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/back.jpeg b/_site/log/fpm-door-lock-rf/back.jpeg Binary files differdeleted file mode 100644 index f458e69..0000000 --- a/_site/log/fpm-door-lock-rf/back.jpeg +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/back_design.jpeg b/_site/log/fpm-door-lock-rf/back_design.jpeg Binary files differdeleted file mode 100644 index b6c0f5d..0000000 --- a/_site/log/fpm-door-lock-rf/back_design.jpeg +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/front.jpeg b/_site/log/fpm-door-lock-rf/front.jpeg Binary files differdeleted file mode 100644 index 2b2931f..0000000 --- a/_site/log/fpm-door-lock-rf/front.jpeg +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/front_design.jpeg b/_site/log/fpm-door-lock-rf/front_design.jpeg Binary files differdeleted file mode 100644 index f81f09c..0000000 --- a/_site/log/fpm-door-lock-rf/front_design.jpeg +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/gerber_back.zip b/_site/log/fpm-door-lock-rf/gerber_back.zip Binary files differdeleted file mode 100644 index 26659ad..0000000 --- a/_site/log/fpm-door-lock-rf/gerber_back.zip +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/gerber_front.zip b/_site/log/fpm-door-lock-rf/gerber_front.zip Binary files differdeleted file mode 100644 index 864334e..0000000 --- a/_site/log/fpm-door-lock-rf/gerber_front.zip +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/index.html b/_site/log/fpm-door-lock-rf/index.html deleted file mode 100644 index 55675ff..0000000 --- a/_site/log/fpm-door-lock-rf/index.html +++ /dev/null @@ -1,125 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Fingerprint door lock (RF)</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">FINGERPRINT DOOR LOCK (RF)</h2> - <h5 class="center">05 JUNE 2025</h5> - <br> - <div class="twocol justify"><p>Wanted to unlock door with fingerprint, wirelessly to avoid drilling.</p> - -<p>2024-11: Started with basic 433MHz RF modules and two Arduinos. Connected data -lines of the transceivers to UART RXD/TXD of an ATmega328P. -Unreliable–constant packet loss.</p> - -<p>2025-01: Switched to RFM69 modules. Complete ball-ache. Followed datasheet to -the letter, audited code many times, cross-checked with RadioHead and RFM69 -open-source drivers. No luck.</p> - -<p>Datasheet riddled with ambiguity.</p> - -<p>ATmega328P runs at 5V; RFM69 3.3V. Suspect logic-level converter (LLC) -issues. High resistance. Not enough swing.</p> - -<p>2025-04: Ditched RFM69s. Switched to NRF24L01+ modules– data pins 5V tolerant, -no LLC required. Spent six weekends writing driver from scratch–clean-room. -Works like a charm.</p> - -<p>2025-05: Wrote FPM drivers for R503 and FPM10A. UART RX sequence was -tricky–adopted Adafruit C++ FOSS implementation to C. R503 has built-in LEDs -and better form factor. Chose it for the lock.</p> - -<p>2025-06: Two PCB boards for FPM (front) and servo (back) controllers. Encrypted -RF link between them.</p> - -<table style="border: none; width: 100%"> - <tr style="border: none;"> - <td style="border: none; width: 49.5%; vertical-align: top; text-align: center;"> - <img src="front_design.jpeg" alt="Design (front)" style="width: 100%" /> - <p>Footprint (front)</p> - </td> - <td style="border: none; vertical-align: top; text-align: center;"> - <img src="front.jpeg" alt="PCB (front)" style="width: 100%" /> - <p>PCB (front)</p> - </td> - </tr> - <tr style="border: none;"> - <td style="border: none; width: 49.5%; vertical-align: top; text-align: center;"> - <img src="back_design.jpeg" alt="Design (back)" style="width: 100%" /> - <p>Footprint (back)</p> - </td> - <td style="border: none; vertical-align: top; text-align: center;"> - <img src="back.jpeg" alt="PCB (back)" style="width: 100%" /> - <p>PCB (back)</p> - </td> - </tr> -</table> - -<p>PCB specs: 2-layer, 1oz copper, 0.3mm traces (0.5mm for power). Ground plane.</p> - -<p>2025-06: NRF24L01+ on the back stopped working after mounting on PCB. Too close -to servo’s PWM line. Soldering a large 47uF (16V) electrolytic capacitor -between VCC and ground fixed it.</p> - -<p>Power problems became clear. Linear regulators dissipated too much heat. Sensor -and servo drew 13.8mA and 4.6mA quiescent currents–unacceptable for battery. -Servo inrush current exceeds 1A. 0.3mm tracks cuts it too close.</p> - -<p>Verdict: Functional but not practical. Battery dead in under 24 hours. Led to -<a href="../fpm-door-lock-lp/">redesign</a> with proper power management.</p> - -<p>Commit: -<a href="https://git.asciimx.com/smart-home/commit/?id=f4b0b734a595919cf451ab9448b06274c8e609a4">f4b0b73</a> -| Gerber: <a href="gerber_back.zip">gerber_back.zip</a>, -<a href="gerber_front.zip">gerber_front.zip</a></p> -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/fpm-door-lock-rf/source.tar.gz b/_site/log/fpm-door-lock-rf/source.tar.gz Binary files differdeleted file mode 100644 index c31aa22..0000000 --- a/_site/log/fpm-door-lock-rf/source.tar.gz +++ /dev/null diff --git a/_site/log/fpm-door-lock-rf/thumb_sm.jpeg b/_site/log/fpm-door-lock-rf/thumb_sm.jpeg Binary files differdeleted file mode 100644 index c275b12..0000000 --- a/_site/log/fpm-door-lock-rf/thumb_sm.jpeg +++ /dev/null diff --git a/_site/log/matrix-digital-rain/index.html b/_site/log/matrix-digital-rain/index.html deleted file mode 100644 index 1915d04..0000000 --- a/_site/log/matrix-digital-rain/index.html +++ /dev/null @@ -1,110 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Matrix Rain: 2025 refactor</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">MATRIX RAIN: 2025 REFACTOR</h2> - <h5 class="center">21 DECEMBER 2025</h5> - <br> - <div class="twocol justify"><p>The 2022 version worked but had some loose ends. Unicode support was -inflexible–couldn’t mix ASCII with Katakana; Phosphor decay was stored in a -separate array when it should’ve been packed with RGB; Code was harder to read -than it needed to be.</p> - -<video style="max-width:100%;" controls="" poster="poster.png"> - <source src="matrix.mp4" type="video/mp4" /> -</video> - -<p>Moved phosphor decay into the 4th byte of the RGB union–should’ve done this -in 2022; What was I thinking.</p> - -<p>Keeping the RGB union despite portability concerns. All my systems are -little-endian and the code is cleaner this way.</p> - -<p>Fixed Unicode by introducing a charset array. UNICODE(min, max) packs Unicode -ranges into uint64: low four bytes for start, high four bytes for end. -insert_code() unpacks a random block and picks a character from it:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>#define UNICODE(min, max) (((uint64_t)max << 32) | min) - -static uint64_t glyphs[] = { - UNICODE(0x0021, 0x007E), /* ASCII */ - UNICODE(0xFF65, 0xFF9F), /* Half-width Katakana */ -}; - -static inline void insert_code(matrix *mat, - size_t row, size_t col) -{ - uint64_t blk; - uint32_t min, max; - - blk = glyphs[(rand() % glyphlen)]; - min = (uint32_t)blk; - max = (uint32_t)(blk >> 32); - mat->code[index(mat, row, col)] = rand() % (max - min) + min; -} -</code></pre></div></div> - -<p>Full-width Katakana breaks column alignment. Stick to half-width -(U+FF61-U+FF9F) range. Compile with -DNOKANA to disable Katakana altogether.</p> - -<p>blend() is still good. Leaving it alone.</p> - -<p>Tossed license and automake cruft. Just <code class="language-plaintext highlighter-rouge">cc -O3 main.c -o matrix</code> now. Don’t -need the ceremony.</p> - -<p>Runs at 2-3% CPU on OpenBSD (T490). No regressions. Fans are quiet.</p> - -<p>Commit: <a href="https://git.asciimx.com/matrix-digital-rain/commit/?id=f71b0de15a94d21ea60d281d73fa41311d8e5197" class="external" target="_blank" rel="noopener noreferrer">f71b0de</a>.</p> - -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/matrix-digital-rain/matrix.mp4 b/_site/log/matrix-digital-rain/matrix.mp4 Binary files differdeleted file mode 100644 index 7edf5d6..0000000 --- a/_site/log/matrix-digital-rain/matrix.mp4 +++ /dev/null diff --git a/_site/log/matrix-digital-rain/poster.png b/_site/log/matrix-digital-rain/poster.png Binary files differdeleted file mode 100644 index 1f68ca4..0000000 --- a/_site/log/matrix-digital-rain/poster.png +++ /dev/null diff --git a/_site/log/matrix-digital-rain/thumb_sm.png b/_site/log/matrix-digital-rain/thumb_sm.png Binary files differdeleted file mode 100644 index 940965a..0000000 --- a/_site/log/matrix-digital-rain/thumb_sm.png +++ /dev/null diff --git a/_site/log/mosfet-switches/bjt.png b/_site/log/mosfet-switches/bjt.png Binary files differdeleted file mode 100644 index 9858fa7..0000000 --- a/_site/log/mosfet-switches/bjt.png +++ /dev/null diff --git a/_site/log/mosfet-switches/index.html b/_site/log/mosfet-switches/index.html deleted file mode 100644 index a91f205..0000000 --- a/_site/log/mosfet-switches/index.html +++ /dev/null @@ -1,141 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>High-side MOSFET switching</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">HIGH-SIDE MOSFET SWITCHING</h2> - <h5 class="center">22 JUNE 2025</h5> - <br> - <div class="twocol justify"><p>Needed low-power switching for the <a href="../fpm-door-lock-lp/">fingerprint door -lock</a>. Servo and FPM draw high quiescent current–had to -cut power electronically during sleep. MOSFETs can do this.</p> - -<p>Schematics belong to <a href="https://electronics.stackexchange.com/users/292884/simon-fitch" class="external" target="_blank" rel="noopener noreferrer">Simon Fitch</a>.</p> - -<h2 id="problem-with-simple-low-side-switching">Problem with simple low-side switching</h2> - -<p>Typical approach: GPIO → gate of N-channel MOSFET on low side, pull-down -resistor between gate and drain. Works if MCU and load don’t share common -ground. Doesn’t work when they do (like controlling a component powered by the -same MCU).</p> - -<p>Issue: source potential = gate potential - threshold voltage. Example: 3.3V -gate - 1.5V threshold → 1.8V at load–not nearly enough for a servo. Raising -the gate potential above source is not always practical. Solution: high-side -switch.</p> - -<h2 id="p-channel-high-side-switch">P-channel high-side switch</h2> - -<p><img src="p_high_side.png" alt="P-channel high-side switching circuit" /></p> - -<p>M1 is P-channel (high-side), M2 is N-channel (level converter). MCU output low -→ M2 off → R1 pulls M1 gate to +6V → servo off. MCU output high → M2 conducts → -M1 gate drops to 0V → servo on.</p> - -<p>Note: IRF9540 in the schematic doesn’t work. V<sub>GS</sub> (-10V) for -RDS<sub>on</sub> too much for 3.3V ATmega328P to drive. NDP6020P is the only -suitable through-hole MOSFET I could find.</p> - -<h2 id="n-channel-high-side-switch">N-channel high-side switch</h2> - -<p><img src="n_high_side.png" alt="N-channel high-side switching circuit" /></p> - -<p>Less common but works if you have voltage high enough to drive the gate. Both -M1 and M2 are N-channel. MCU low → M2 off → M1 gate rises above threshold → -servo on. MCU high → M2 on → M1 gate drops → servo off. R2 prevents -high-impedance power-up from switching servo on.</p> - -<p>M2 needed in both topologies for level conversion (0V ↔ +6V or +9V). Carries -<1mA. Gate-source threshold must be lower than MCU supply. Common choices: -2N7000, 2N7002, BSS138.</p> - -<p>Note: D1 flyback diodes protect MOSFETs from voltage spikes caused by inductive -loads (servos, relays).</p> - -<h2 id="a-bjt-alternative">A BJT alternative</h2> - -<p><img src="bjt.png" alt="BJT architecture" /></p> - -<p>Simpler, cheaper, more available. Q2 conducts when MCU outputs high. Q2 -amplifies Q1’s base current. Unlike MOSFETs (voltage-driven), BJTs are -current-driven. R3 and R4 must be calculated for desired base currents. <a href="https://teachmetomake.wordpress.com/how-to-use-a-transistor-as-a-switch/" class="external" target="_blank" rel="noopener noreferrer">Guide on BJT -switches</a>.</p> - -<h2 id="which-topology">Which topology?</h2> - -<p>MOSFETs preferred in professional work—more efficient when on. Harder to drive -at 3.3V due to V<sub>GS</sub> requirements for full saturation (low -R<sub>DS(on)</sub>).</p> - -<p>N-channel: Lower on-resistance, cheaper, more efficient than P-channel. Harder -to drive high-side (gate must be above source—requires extra circuitry like -MOSFET drivers).</p> - -<p>Used P-channel high-side for the door lock redesign. Simpler to drive from 3.3V -MCU, no driver needed.</p> - -<h2 id="further-reading">Further reading</h2> - -<ul> - <li><a href="https://www.embeddedrelated.com/showarticle/98.php" class="external" target="_blank" rel="noopener noreferrer">Different MOSFET -topologies</a></li> - <li><a href="https://www.embeddedrelated.com/showarticle/809.php" class="external" target="_blank" rel="noopener noreferrer">How to read -MOSFET datasheets</a></li> - <li><a href="https://teachmetomake.wordpress.com/how-to-use-a-transistor-as-a-switch/" class="external" target="_blank" rel="noopener noreferrer">How to use a -transistor as a switch</a></li> - <li><a href="https://forum.digikey.com/t/guide-to-selecting-and-controlling-a-mosfet-for-3-3-vdc-logic-applications/42606" class="external" target="_blank" rel="noopener noreferrer">Guide to -selecting and controlling a MOSFET for 3.3 VDC logic applications</a></li> - <li><a href="https://forum.digikey.com/t/driving-a-large-relay-from-a-3-3-vdc-microcontroller-using-an-npn-darlington-transistor/41751" class="external" target="_blank" rel="noopener noreferrer">Driving a large -relay from a 3.3 VDC microcontroller using an NPN Darlington transistor</a></li> -</ul> -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/mosfet-switches/n_high_side.png b/_site/log/mosfet-switches/n_high_side.png Binary files differdeleted file mode 100644 index c851768..0000000 --- a/_site/log/mosfet-switches/n_high_side.png +++ /dev/null diff --git a/_site/log/mosfet-switches/p_high_side.png b/_site/log/mosfet-switches/p_high_side.png Binary files differdeleted file mode 100644 index 9f5397a..0000000 --- a/_site/log/mosfet-switches/p_high_side.png +++ /dev/null diff --git a/_site/log/neo4j-a-star-search/index.html b/_site/log/neo4j-a-star-search/index.html deleted file mode 100644 index 2063d68..0000000 --- a/_site/log/neo4j-a-star-search/index.html +++ /dev/null @@ -1,106 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Neo4J path traversal: A* optimization</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">NEO4J PATH TRAVERSAL: A* OPTIMIZATION</h2> - <h5 class="center">06 MARCH 2018</h5> - <br> - <div class="twocol justify"><p>Work. Vessel tracking with Neo4J hit a limit. Need to analyze 13,000 route -points; Dijkstra’s shortest path search slows after 4,000.</p> - -<p>Replaced Dijkstra’s algorithm with A* search using haversine function as -heuristic:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>private double computeHeuristic( - final double lat1, final double lon1, - final double lat2, final double lon2) { - final int earthRadius = 6371; - final double kmToNM = 0.539957; - - final double latDistance = Math.toRadians(lat2 - lat1); - final double lonDistance = Math.toRadians(lon2 - lon1); - - final double a = Math.sin(latDistance / 2) - * Math.sin(latDistance / 2) - + Math.cos(Math.toRadians(lat1)) - * Math.cos(Math.toRadians(lat2)) - * Math.sin(lonDistance / 2) - * Math.sin(lonDistance / 2); - - final double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); - - return earthRadius * c * kmToNM; -} -</code></pre></div></div> - -<p>Core search loop updates costs when better path found:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>private void updateCosts( - final int source, final int target, - final double newCost, final double heuristic) { - final double oldCost = gCosts.getOrDefault(target, Double.MAX_VALUE); - if (newCost < oldCost) { - gCosts.put(target, newCost); - fCosts.put(target, newCost + heuristic); - path.put(target, source); - } -} -</code></pre></div></div> - -<p>300x speedup. Scaled to 13,000 route points.</p> - -<p>Upstreamed changes: <a href="https://github.com/neo4j-contrib/neo4j-graph-algorithms/releases/tag/3.4.0.0" class="external" target="_blank" rel="noopener noreferrer">Neo4J v3.4.0</a> | -<a href="https://github.com/neo4j-contrib/neo4j-graph-algorithms/blob/bd9732d9a690319552e134708692acb5a0d6b37c/algo/src/main/java/org/neo4j/graphalgo/impl/ShortestPathAStar.java">Full -source</a></p> -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/log/site-search/index.html b/_site/log/site-search/index.html deleted file mode 100644 index 77fe19e..0000000 --- a/_site/log/site-search/index.html +++ /dev/null @@ -1,184 +0,0 @@ -<!DOCTYPE html> -<html> - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Full-text search: SA lookup</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li > - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main> - <div class="container"> - <div class="container-2"> - <h2 class="center" id="title">FULL-TEXT SEARCH: SA LOOKUP</h2> - <h5 class="center">03 JANUARY 2026</h5> - <br> - <div class="twocol justify"><p>Article count is growing. Need a way to search.</p> - -<p>Requirements: matches substrings, case-insensitive, fast, secure. No -JavaScript.</p> - -<p>Architecture: browser → httpd → slowcgi → Perl CGI script.</p> - -<p>Perl, httpd, slowcgi are in the OpenBSD base system. Instead of secrets, file -system permissions govern access.</p> - -<p>2025-12-30: Regex search.</p> - -<p>140-line Perl script searches 500 files in 40ms. Fast enough; O(N) pull felt at -higher file counts.</p> - -<p>Introduces ReDoS and symlink attack vectors. Both can be mitigated. Tempted to -stop here.</p> - -<p>2026-01-03: Suffix Array (SA) based index lookup.</p> - -<p>Slurping files on every request bothers me. Regex search depends almost -entirely on hardware for speed.</p> - -<p>Implemented SA index with three files: corpus.bin, sa.bin, file_map.dat. Index -built with site:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>$ JEKYLL_ENV=production bundle exec jekyll build -$ cd cgi-bin/ -$ perl indexer.pl -</code></pre></div></div> - -<p>Indexer extracts HTML, lowercases, encodes into UTF-8 binary sequences. Null -byte sentinel for document boundaries. sa.bin stores suffix offsets as -32-bit unsigned integers, sorted by lexicographical order:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>my @sa = 0 .. (length($corpus) - 1); -{ - use bytes; # Force compare 8-bit Unicode value comparisons - @sa = sort { - # First 64 bytes check (fast path) - (substr($corpus, $a, 64) cmp substr($corpus, $b, 64)) || - # Full string fallback (required for correctness) - (substr($corpus, $a) cmp substr($corpus, $b)) - } @sa; -} - -CORPUS: a s c i \0 i m x -OFFSET: 0 1 2 3 4 5 6 7 - -SORTED SUFFIXES: - -[4] \0imx -[0] asci\0imx -[2] ci\0imx -[3] i\0imx <-- "i" from "asci" -[5] imx <-- "i" from "imx" -[6] mx -[1] sci\0imx -[7] x -</code></pre></div></div> - -<p>Time complexity: O(L⋅N log N). Fast path caps L at 64 bytes (length of cache -line), reducing complexity to O(N log N).</p> - -<p>Search: Textbook range query with twin binary searches. Random access to -suffixes and the text made possible by the fixed-width offsets:</p> - -<div class="language-plaintext highlighter-rouge"><div class="highlight"><pre class="highlight"><code>seek($fh_sa, $mid * 4, 0); -read($fh_sa, my $bin_off, 4); -my $off = unpack("L", $bin_off); -seek($fh_cp, $off, 0); -read($fh_cp, my $text, $query_len); -</code></pre></div></div> - -<p>Small seek/reads are fast on modern SSDs. Keeps memory usage low.</p> - -<p>NOTE: mmap.</p> - -<p>Benchmarks on T490 (i7-10510U, OpenBSD 7.8, article size: 16 KB).</p> - -<p>500 files:</p> -<ul> - <li>Index size: 204.94 KB</li> - <li>Indexing time: 0.1475 s</li> - <li>Peak RAM (SA): 8828 KB</li> - <li>Peak RAM (Regex): 9136 KB</li> - <li>Search (SA): 0.0012 s</li> - <li>Search (Regex): 0.0407 s</li> -</ul> - -<p>1,000 files:</p> -<ul> - <li>Index size: 410.51 KB</li> - <li>Indexing time: 0.3101 s</li> - <li>Peak RAM (SA): 8980 KB</li> - <li>Peak RAM (Regex): 9460 KB</li> - <li>Search (SA): 0.0019 s</li> - <li>Search (Regex): 0.0795 s</li> -</ul> - -<p>10,000 files:</p> -<ul> - <li>Index size: 4163.44 KB</li> - <li>Indexing time: 10.9661 s</li> - <li>Peak RAM (SA): 12504 KB</li> - <li>Peak RAM (Regex): 12804 KB</li> - <li>Search (SA): 0.0161 s</li> - <li>Search (Regex): 0.9120 s</li> -</ul> - -<p>Security: Derived from architectural simplicity. Zero dependencies to manage, -no secrets to hide, no targets for lateral movement.</p> - -<p>Runs in chroot.</p> - -<p>Resource exhaustion and XSS attacks are inherent. Former mitigated by limiting -concurrent searches via lock-file semaphores. Query length (64B) and result set -(20) capped. All output is HTML-escaped to prevent XSS.</p> - -<p>Secure by default. Fast. Durable.</p> - -<p>Commit: -<a href="https://git.asciimx.com/www/commit/?h=term&id=6da102d6e0494a3eac3f05fa3b2cdcc25ba2754e">6da102d</a> -| Benchmarks: -<a href="https://git.asciimx.com/site-search-bm/commit/?id=8a4da6809cf9368cd6a5dd7351181ea4256453f9">8a4da68</a></p> -</div> - <p class="post-author right">by W. D. Sadeep Madurange</p> - </div> - </div> - </main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/posts.xml b/_site/posts.xml deleted file mode 100644 index 5378325..0000000 --- a/_site/posts.xml +++ /dev/null @@ -1 +0,0 @@ -<?xml version="1.0" encoding="utf-8"?><feed xmlns="http://www.w3.org/2005/Atom" ><generator uri="https://jekyllrb.com/" version="4.4.1">Jekyll</generator><link href="http://localhost:4000/posts.xml" rel="self" type="application/atom+xml" /><link href="http://localhost:4000/" rel="alternate" type="text/html" /><updated>2026-01-09T16:44:28+08:00</updated><id>http://localhost:4000/posts.xml</id><title type="html">ASCIIMX</title><author><name>W. D. Sadeep Madurange</name></author></feed>
\ No newline at end of file diff --git a/_site/projects/index.html b/_site/projects/index.html deleted file mode 100644 index 474febe..0000000 --- a/_site/projects/index.html +++ /dev/null @@ -1,131 +0,0 @@ -<!doctype html> -<html lang="en-us"> - - <head> - <meta charset="utf-8"> - <meta name="viewport" content="width=device-width, initial-scale=1"> - <title>Projects</title> - <link rel="stylesheet" href="/assets/css/main.css"> - <link rel="stylesheet" href="/assets/css/skeleton.css"> -</head> - - - - <body> - - <div id="nav-container" class="container"> - <ul id="navlist" class="left"> - - <li > - <a href="/" class="link-decor-none">hme</a> - </li> - <li class="active"> - <a href="/projects/" class="link-decor-none">poc</a> - </li> - <li > - <a href="/about/" class="link-decor-none">abt</a> - </li> - <li> - <a href="/cgi-bin/find.cgi" class="link-decor-none">lup</a> - </li> - <li> - <a href="/feed.xml" class="link-decor-none">rss</a> - </li> - </ul> -</div> - - - - <main class="container" id="main"><div class="container"> - <h2>Projects</h2> - <table> - - - - - - - - - <tr> - - - <td class="project-item"> - - <a href="../log/matrix-digital-rain" class="link-decor-none"> - <img src="../log/matrix-digital-rain/thumb_sm.png" alt="Matrix Rain: 2025 refactor"> - <h5>Matrix Rain: 2025 refactor</h5> - </a> - </td> - - <td class="project-item"> - - <a href="../log/fpm-door-lock-lp" class="link-decor-none"> - <img src="../log/fpm-door-lock-lp/thumb_sm.jpg" alt="Fingerprint door lock (LP)"> - <h5>Fingerprint door lock (LP)</h5> - </a> - </td> - - </tr> - - <tr> - - - <td class="project-item"> - - <a href="../log/fpm-door-lock-rf" class="link-decor-none"> - <img src="../log/fpm-door-lock-rf/thumb_sm.jpeg" alt="Fingerprint door lock (RF)"> - <h5>Fingerprint door lock (RF)</h5> - </a> - </td> - - <td class="project-item"> - - <a href="../log/bumblebee" class="link-decor-none"> - <img src="../log/bumblebee/thumb_sm.png" alt="Bumblebee: web script synthesizer"> - <h5>Bumblebee: web script synthesizer</h5> - </a> - </td> - - </tr> - - <tr> - - - <td class="project-item"> - - <a href="../log/etlas" class="link-decor-none"> - <img src="../log/etlas/thumb_sm.jpg" alt="Etlas: e-paper dashboard"> - <h5>Etlas: e-paper dashboard</h5> - </a> - </td> - - <td class="project-item"> - - <a href="../log/e-reader" class="link-decor-none"> - <img src="../log/e-reader/thumb_sm.png" alt="512KB e-reader"> - <h5>512KB e-reader</h5> - </a> - </td> - - - - - - </tr> - - </table> -</div> -</main> - - <div class="footer"> - <div class="container"> - <div class="twelve columns right container-2"> - <p id="footer-text">© ASCIIMX - 2026</p> - </div> - </div> -</div> - - - </body> -</html> diff --git a/_site/robots.txt b/_site/robots.txt deleted file mode 100644 index d297064..0000000 --- a/_site/robots.txt +++ /dev/null @@ -1 +0,0 @@ -Sitemap: http://localhost:4000/sitemap.xml diff --git a/_site/sitemap.xml b/_site/sitemap.xml deleted file mode 100644 index a722c6a..0000000 --- a/_site/sitemap.xml +++ /dev/null @@ -1,56 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"> -<url> -<loc>http://localhost:4000/log/neo4j-a-star-search/</loc> -<lastmod>2018-03-06T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/e-reader/</loc> -<lastmod>2023-10-24T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/etlas/</loc> -<lastmod>2024-09-05T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/arduino-due/</loc> -<lastmod>2024-09-16T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/bumblebee/</loc> -<lastmod>2025-04-02T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/fpm-door-lock-rf/</loc> -<lastmod>2025-06-05T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/arduino-uno/</loc> -<lastmod>2025-06-10T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/mosfet-switches/</loc> -<lastmod>2025-06-22T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/fpm-door-lock-lp/</loc> -<lastmod>2025-08-18T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/matrix-digital-rain/</loc> -<lastmod>2025-12-21T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/log/site-search/</loc> -<lastmod>2026-01-03T00:00:00+08:00</lastmod> -</url> -<url> -<loc>http://localhost:4000/about/</loc> -</url> -<url> -<loc>http://localhost:4000/</loc> -</url> -<url> -<loc>http://localhost:4000/projects/</loc> -</url> -</urlset> |
