wip: Unix desktop.

author: Sadeep Madurange <sadeep@asciimx.com> 2025-11-02 15:12:54 +0800
committer: Sadeep Madurange <sadeep@asciimx.com> 2025-11-02 15:12:54 +0800
commit: 3b63c5139ca9a34fa79bc2eb132ecfd71897dc7e (patch)
tree: a2f060fb2deb2bfd3f541f46e6a842fac5f9c752 /_site/archive
parent: eb6497e805627137e15bf30d3ec46fb510103f56 (diff)
download: www-3b63c5139ca9a34fa79bc2eb132ecfd71897dc7e.tar.gz
13 files changed, 79 insertions, 113 deletions
diff --git a/_site/archive/desktop-unix/dotfiles.tar.gz b/_site/archive/desktop-unix/dotfiles.tar.gz
new file mode 100644
index 0000000..c6774c4
--- /dev/null
+++ b/_site/archive/desktop-unix/dotfiles.tar.gz
diff --git a/_site/archive/desktop-unix/index.html b/_site/archive/desktop-unix/index.html
new file mode 100644
index 0000000..7d2ed15
--- /dev/null
+++ b/_site/archive/desktop-unix/index.html
@@ -0,0 +1,75 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <title>Unix-like operating systems</title>
+
+    <head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+  <title>Unix-like operating systems</title>
+  <link rel="stylesheet" href="/assets/css/main.css">
+  <link rel="stylesheet" href="/assets/css/skeleton.css">
+</head>
+
+
+
+  </head>
+  <body>
+
+    <div class="container">
+  <ul id="navlist" class="left">
+    
+    <li >
+      <a href="/" class="link-decor-none">hme</a>
+    </li>
+    <li class="active">
+      <a href="/archive/" class="link-decor-none">blg</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="/feed.xml" class="link-decor-none">rss</a></li>
+  </ul>
+</div>
+
+
+
+    <main>
+      <div class="container">
+        <h2 class="center" id="title">UNIX-LIKE OPERATING SYSTEMS</h2>
+        <h6 class="center">21 SEPTEMBER 2025</h5>
+        <br>
+        <div class="twocol justify"><p>The year 2020 transformed my personal computing experience. In March 2020, I
+stumbled upon Arch Linux and discovered that I could customize my desktop
+environment to look and work any way I liked. I exercised that newfound freedom
+to create a Matrix-themed setup:</p>
+
+<p><img src="linux.png" alt="Arch Linux" /></p>
+
+<p>The system employs the X display server and the i3 window manager. The terminal
+emulator used is Urxvt. The translucent effect is achieved with the help of the
+Xcompmgr compositor. This sort of setup was popular among minimalist Linux
+users.</p>
+
+<p>In February 2024, I switched to an OpenBSD system with Xenocara (the OpenBSD
+build of X display server) as the display server and i3 as the window manager:</p>
+
+<p><img src="openbsd.png" alt="OpenBSD i3" /></p>
+
+<p>Unlike Linux, OpenBSD includes a coherent desktop environment out of the box.
+Except for the window manager, for which I prefer a tiling one, I’m now using
+the default OpenBSD setup. For the window manager, I use dwm from the Suckless
+team.</p>
+
+<p>Files: <a href="dotfiles.tar.gz">dotfiles.tar.gz</a></p>
+</div>
+        <p class="post-author right">by Wickramage Don Sadeep Madurange</p>
+      </div>
+    </main>
+
+  </body>
+</html>
diff --git a/_site/archive/desktop-unix/linux.png b/_site/archive/desktop-unix/linux.png
new file mode 100644
index 0000000..40bc33b
--- /dev/null
+++ b/_site/archive/desktop-unix/linux.png
diff --git a/_site/archive/desktop-unix/openbsd.png b/_site/archive/desktop-unix/openbsd.png
new file mode 100644
index 0000000..d7489f7
--- /dev/null
+++ b/_site/archive/desktop-unix/openbsd.png
diff --git a/_site/archive/index.html b/_site/archive/index.html
index 1b095fd..61faed8 100644
--- a/_site/archive/index.html
+++ b/_site/archive/index.html
@@ -46,11 +46,11 @@
   
       <tr>
         <td class="posts-td posts-td-link">
-          <a href="/archive/neo4j-a-star-search/" class="link-decor-none">Neo4J A* search</a>
+          <a href="/archive/desktop-unix/" class="link-decor-none">Unix-like operating systems</a>
         </td>
         <td class="posts-td posts-td-time">
           <span class="post-meta">
-            <time datetime="2025-09-14 00:00:00 +0800">2025-09-14</time>
+            <time datetime="2025-09-21 00:00:00 +0800">2025-09-21</time>
           </span>
         </td>
       </tr>
@@ -59,11 +59,11 @@
   
       <tr>
         <td class="posts-td posts-td-link">
-          <a href="/archive/my-first-pcb/" class="link-decor-none">My first PCB</a>
+          <a href="/archive/neo4j-a-star-search/" class="link-decor-none">Neo4J A* search</a>
         </td>
         <td class="posts-td posts-td-time">
           <span class="post-meta">
-            <time datetime="2025-07-14 00:00:00 +0800">2025-07-14</time>
+            <time datetime="2025-09-14 00:00:00 +0800">2025-09-14</time>
           </span>
         </td>
       </tr>
diff --git a/_site/archive/my-first-pcb/back.jpeg b/_site/archive/my-first-pcb/back.jpeg
deleted file mode 100644
index f458e69..0000000
--- a/_site/archive/my-first-pcb/back.jpeg
+++ /dev/null
diff --git a/_site/archive/my-first-pcb/back_design.jpeg b/_site/archive/my-first-pcb/back_design.jpeg
deleted file mode 100644
index b6c0f5d..0000000
--- a/_site/archive/my-first-pcb/back_design.jpeg
+++ /dev/null
diff --git a/_site/archive/my-first-pcb/front.jpeg b/_site/archive/my-first-pcb/front.jpeg
deleted file mode 100644
index 2b2931f..0000000
--- a/_site/archive/my-first-pcb/front.jpeg
+++ /dev/null
diff --git a/_site/archive/my-first-pcb/front_design.jpeg b/_site/archive/my-first-pcb/front_design.jpeg
deleted file mode 100644
index f81f09c..0000000
--- a/_site/archive/my-first-pcb/front_design.jpeg
+++ /dev/null
diff --git a/_site/archive/my-first-pcb/gerber_back.zip b/_site/archive/my-first-pcb/gerber_back.zip
deleted file mode 100644
index 26659ad..0000000
--- a/_site/archive/my-first-pcb/gerber_back.zip
+++ /dev/null
diff --git a/_site/archive/my-first-pcb/gerber_front.zip b/_site/archive/my-first-pcb/gerber_front.zip
deleted file mode 100644
index 864334e..0000000
--- a/_site/archive/my-first-pcb/gerber_front.zip
+++ /dev/null
diff --git a/_site/archive/my-first-pcb/index.html b/_site/archive/my-first-pcb/index.html
deleted file mode 100644
index d2ede3a..0000000
--- a/_site/archive/my-first-pcb/index.html
+++ /dev/null
@@ -1,109 +0,0 @@
-<!DOCTYPE html>
-<html>
-  <head>
-    <meta charset="utf-8">
-    <title>My first PCB</title>
-
-    <head>
-  <meta charset="utf-8">
-  <meta name="viewport" content="width=device-width, initial-scale=1">
-  <title>My first PCB</title>
-  <link rel="stylesheet" href="/assets/css/main.css">
-  <link rel="stylesheet" href="/assets/css/skeleton.css">
-</head>
-
-
-
-  </head>
-  <body>
-
-    <div class="container">
-  <ul id="navlist" class="left">
-    
-    <li >
-      <a href="/" class="link-decor-none">hme</a>
-    </li>
-    <li class="active">
-      <a href="/archive/" class="link-decor-none">blg</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="/feed.xml" class="link-decor-none">rss</a></li>
-  </ul>
-</div>
-
-
-
-    <main>
-      <div class="container">
-        <h2 class="center" id="title">MY FIRST PCB</h2>
-        <h6 class="center">14 JULY 2025</h5>
-        <br>
-        <div class="twocol justify"><p>In 2023, I started tinkering with DIY electronics as a hobby. Until now, I’ve
-been using development boards like the Arduino Uno and ESP-32-WROOM so that I
-can focus on the software. Recently, I decided to step outside of my comfort
-zone and design a PCB from scratch for a door lock I’m working on.</p>
-
-<p>The lock comprises two subsystems: a fingerprint sensor in front of the door
-and a servo connected to the physical lock behind the door. The fingerprint
-sensor authenticates the person and signals the servo behind the door to unlock
-the door over an encrypted RF channel.</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>The PCBs have two layers. A copper region serves as the ground plane. The 0.3
-mm wide 1 oz/ft<sup>2</sup> copper traces can carry up to 500 mA (the tracks
-connecting the power source and the linear regulators have a width of 0.5 mm).
-Both subsystems were functional. I was able to control the servo reliably using
-the fingerprint sensor.</p>
-
-<p>The designs aren’t without flaws, however. The main shortcoming of the circuits
-is that they draw significant amounts of quiescent currents despite employing
-sleep modes. The linear regulators were a poor choice as they dissipate too
-much heat. The fingerprint sensor and the servo draw 13.8 mA (3.3 V) and 4.6 mA
-(5 V) respectively, as long as they are connected to the power supply.</p>
-
-<p>Although the circuit didn’t draw more than 200 mA without a load, the servo
-under load could draw up to 600 mA. I’m sailing too close to the wind with 0.3
-mm copper traces. Instead, 0.4 mm wide 2 oz/ft<sup>2</sup> traces would have
-been safer.</p>
-
-<p>I’m working on improving the design to reduce idle current consumption and
-extend the battery life. Despite its deficiencies, this was my first PCB
-design, and I’m glad that it worked as well as it did. Custom PCB design marks
-an important milestone in my DIY electronics journey.</p>
-
-<p>Files: <a href="gerber_back.zip">gerber_back.zip</a>, <a href="gerber_front.zip">gerber_front.zip</a>,
-       <a href="source.tar.gz">source.tar.gz</a></p>
-</div>
-        <p class="post-author right">by Wickramage Don Sadeep Madurange</p>
-      </div>
-    </main>
-
-  </body>
-</html>
diff --git a/_site/archive/my-first-pcb/source.tar.gz b/_site/archive/my-first-pcb/source.tar.gz
deleted file mode 100644
index c31aa22..0000000
--- a/_site/archive/my-first-pcb/source.tar.gz
+++ /dev/null
author	Sadeep Madurange <sadeep@asciimx.com>	2025-11-02 15:12:54 +0800
committer	Sadeep Madurange <sadeep@asciimx.com>	2025-11-02 15:12:54 +0800
commit	3b63c5139ca9a34fa79bc2eb132ecfd71897dc7e (patch)
tree	a2f060fb2deb2bfd3f541f46e6a842fac5f9c752 /_site/archive
parent	eb6497e805627137e15bf30d3ec46fb510103f56 (diff)
download	www-3b63c5139ca9a34fa79bc2eb132ecfd71897dc7e.tar.gz