From d952c91adb52d0bf7dd9aff9966b930325141f75 Mon Sep 17 00:00:00 2001
From: Sadeep Madurange <sadeep@asciimx.com>
Date: Sun, 7 Dec 2025 18:37:18 +0800
Subject: Polish the PCB design write-up.

---
 _site/feed.xml                         |  2 +-
 _site/posts.xml                        |  2 +-
 _site/projects/my-first-pcb/index.html | 18 +++++++++---------
 _site/robots.txt                       |  2 +-
 _site/sitemap.xml                      | 30 +++++++++++++++---------------
 5 files changed, 27 insertions(+), 27 deletions(-)

(limited to '_site')

diff --git a/_site/feed.xml b/_site/feed.xml
index 1d1e03e..e38bc9f 100644
--- a/_site/feed.xml
+++ b/_site/feed.xml
@@ -1 +1 @@
-<?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="/feed.xml" rel="self" type="application/atom+xml" /><link href="/" rel="alternate" type="text/html" /><updated>2025-12-07T18:28:47+08:00</updated><id>/feed.xml</id><title type="html">ASCIIMX | Archive</title><author><name>Wickramage Don Sadeep Madurange</name></author><entry><title type="html">How I manage Suckless software packages</title><link href="/archive/suckless-software/" rel="alternate" type="text/html" title="How I manage Suckless software packages" /><published>2025-11-30T00:00:00+08:00</published><updated>2025-11-30T00:00:00+08:00</updated><id>/archive/suckless-software</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[Since suckless software requires users to modify the source code and recompile to customize, I need a way to maintain patches over the long term while retaining the ability to upgrade the software as new versions are released.]]></summary></entry><entry><title type="html">Neo4J A* search</title><link href="/archive/neo4j-a-star-search/" rel="alternate" type="text/html" title="Neo4J A* search" /><published>2025-09-14T00:00:00+08:00</published><updated>2025-09-14T00:00:00+08:00</updated><id>/archive/neo4j-a-star-search</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[Back in 2018, we used Neo4J graph database to track the movement of marine vessels. We were interested in the shortest path a ship could take through a network of about 13,000 route points. Algorithms based on graph theory, such as A* search, provide optimal solutions to such problems. In other words, the set of route points lends itself well to a model based on graphs.]]></summary></entry><entry><title type="html">MOSFETs as electronic switches</title><link href="/archive/mosfet-switches/" rel="alternate" type="text/html" title="MOSFETs as electronic switches" /><published>2025-06-22T00:00:00+08:00</published><updated>2025-06-22T00:00:00+08:00</updated><id>/archive/mosfet-switches</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[Recently, I needed a low-power circuit for one of my battery-operated projects. Much of the system’s power savings depended on its ability to electronically switch off components, such as servos, that draw high levels of quiescent currents. My search for a solution led me to MOSFETs, transistors capable of controlling circuits operating at voltages far above their own.]]></summary></entry><entry><title type="html">How to configure ATmega328P microcontrollers to run at 3.3V and 5V</title><link href="/archive/arduino-uno/" rel="alternate" type="text/html" title="How to configure ATmega328P microcontrollers to run at 3.3V and 5V" /><published>2025-04-10T00:00:00+08:00</published><updated>2025-04-10T00:00:00+08:00</updated><id>/archive/arduino-uno</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[This is a quick reference for wiring up ATmega328P ICs to run at 5V and 3.3V. While the 5V configuration is common, the 3.3V configuration can be useful in low-power applications and when interfacing with parts that themselves run at 3.3V. In this guide, the 5V setup is configured with a 16MHz crystal oscillator, while the 3.3V configuration makes use of an 8MHz crystal oscillator.]]></summary></entry><entry><title type="html">How to set up ATSAM3X8E microcontrollers for bare-metal programming in C</title><link href="/archive/arduino-due/" rel="alternate" type="text/html" title="How to set up ATSAM3X8E microcontrollers for bare-metal programming in C" /><published>2024-10-05T00:00:00+08:00</published><updated>2024-10-05T00:00:00+08:00</updated><id>/archive/arduino-due</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[This article is a step-by-step guide for programming bare-metal ATSAM3X8E chips found on Arduino Due boards. It also includes notes on the chip’s memory layout relevant for writing linker scripts. The steps described in this article were tested on an OpenBSD workstation.]]></summary></entry></feed>
\ No newline at end of file
+<?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>2025-12-07T18:33:35+08:00</updated><id>http://localhost:4000/feed.xml</id><title type="html">ASCIIMX | Archive</title><author><name>Wickramage Don Sadeep Madurange</name></author><entry><title type="html">How I manage Suckless software packages</title><link href="http://localhost:4000/archive/suckless-software/" rel="alternate" type="text/html" title="How I manage Suckless software packages" /><published>2025-11-30T00:00:00+08:00</published><updated>2025-11-30T00:00:00+08:00</updated><id>http://localhost:4000/archive/suckless-software</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[Since suckless software requires users to modify the source code and recompile to customize, I need a way to maintain patches over the long term while retaining the ability to upgrade the software as new versions are released.]]></summary></entry><entry><title type="html">Neo4J A* search</title><link href="http://localhost:4000/archive/neo4j-a-star-search/" rel="alternate" type="text/html" title="Neo4J A* search" /><published>2025-09-14T00:00:00+08:00</published><updated>2025-09-14T00:00:00+08:00</updated><id>http://localhost:4000/archive/neo4j-a-star-search</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[Back in 2018, we used Neo4J graph database to track the movement of marine vessels. We were interested in the shortest path a ship could take through a network of about 13,000 route points. Algorithms based on graph theory, such as A* search, provide optimal solutions to such problems. In other words, the set of route points lends itself well to a model based on graphs.]]></summary></entry><entry><title type="html">MOSFETs as electronic switches</title><link href="http://localhost:4000/archive/mosfet-switches/" rel="alternate" type="text/html" title="MOSFETs as electronic switches" /><published>2025-06-22T00:00:00+08:00</published><updated>2025-06-22T00:00:00+08:00</updated><id>http://localhost:4000/archive/mosfet-switches</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[Recently, I needed a low-power circuit for one of my battery-operated projects. Much of the system’s power savings depended on its ability to electronically switch off components, such as servos, that draw high levels of quiescent currents. My search for a solution led me to MOSFETs, transistors capable of controlling circuits operating at voltages far above their own.]]></summary></entry><entry><title type="html">How to configure ATmega328P microcontrollers to run at 3.3V and 5V</title><link href="http://localhost:4000/archive/arduino-uno/" rel="alternate" type="text/html" title="How to configure ATmega328P microcontrollers to run at 3.3V and 5V" /><published>2025-04-10T00:00:00+08:00</published><updated>2025-04-10T00:00:00+08:00</updated><id>http://localhost:4000/archive/arduino-uno</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[This is a quick reference for wiring up ATmega328P ICs to run at 5V and 3.3V. While the 5V configuration is common, the 3.3V configuration can be useful in low-power applications and when interfacing with parts that themselves run at 3.3V. In this guide, the 5V setup is configured with a 16MHz crystal oscillator, while the 3.3V configuration makes use of an 8MHz crystal oscillator.]]></summary></entry><entry><title type="html">How to set up ATSAM3X8E microcontrollers for bare-metal programming in C</title><link href="http://localhost:4000/archive/arduino-due/" rel="alternate" type="text/html" title="How to set up ATSAM3X8E microcontrollers for bare-metal programming in C" /><published>2024-10-05T00:00:00+08:00</published><updated>2024-10-05T00:00:00+08:00</updated><id>http://localhost:4000/archive/arduino-due</id><author><name>Wickramage Don Sadeep Madurange</name></author><summary type="html"><![CDATA[This article is a step-by-step guide for programming bare-metal ATSAM3X8E chips found on Arduino Due boards. It also includes notes on the chip’s memory layout relevant for writing linker scripts. The steps described in this article were tested on an OpenBSD workstation.]]></summary></entry></feed>
\ No newline at end of file
diff --git a/_site/posts.xml b/_site/posts.xml
index 88c0c52..70b4a10 100644
--- a/_site/posts.xml
+++ b/_site/posts.xml
@@ -1 +1 @@
-<?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="/posts.xml" rel="self" type="application/atom+xml" /><link href="/" rel="alternate" type="text/html" /><updated>2025-12-07T18:28:47+08:00</updated><id>/posts.xml</id><title type="html">ASCIIMX</title><author><name>Wickramage Don Sadeep Madurange</name></author></feed>
\ No newline at end of file
+<?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>2025-12-07T18:33:35+08:00</updated><id>http://localhost:4000/posts.xml</id><title type="html">ASCIIMX</title><author><name>Wickramage Don Sadeep Madurange</name></author></feed>
\ No newline at end of file
diff --git a/_site/projects/my-first-pcb/index.html b/_site/projects/my-first-pcb/index.html
index d0b7938..1c3a062 100644
--- a/_site/projects/my-first-pcb/index.html
+++ b/_site/projects/my-first-pcb/index.html
@@ -77,22 +77,22 @@ the door over an encrypted RF channel.</p>
   </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).
+<p>The PCBs have two layers. A copper region serves as the ground plane. The 0.3mm
+wide 1oz/ft<sup>2</sup> copper traces can carry up to 500mA (the tracks
+connecting the power source and the linear regulators have a width of 0.5mm).
 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>
+much heat. The fingerprint sensor and the servo draw 13.8mA (3.3V) and 4.6mA
+(5V) 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>Although the circuit didn’t draw more than 200mA without a load, the servo
+under load could draw up to 600mA. I’m sailing too close to the wind with 0.3mm
+copper traces. Instead, 0.4mm wide 2oz/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
diff --git a/_site/robots.txt b/_site/robots.txt
index e087884..d297064 100644
--- a/_site/robots.txt
+++ b/_site/robots.txt
@@ -1 +1 @@
-Sitemap: /sitemap.xml
+Sitemap: http://localhost:4000/sitemap.xml
diff --git a/_site/sitemap.xml b/_site/sitemap.xml
index 669f6b7..8edaaea 100644
--- a/_site/sitemap.xml
+++ b/_site/sitemap.xml
@@ -1,59 +1,59 @@
 <?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>/archive/arduino-due/</loc>
+<loc>http://localhost:4000/archive/arduino-due/</loc>
 <lastmod>2024-10-05T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/archive/arduino-uno/</loc>
+<loc>http://localhost:4000/archive/arduino-uno/</loc>
 <lastmod>2025-04-10T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/archive/mosfet-switches/</loc>
+<loc>http://localhost:4000/archive/mosfet-switches/</loc>
 <lastmod>2025-06-22T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/archive/neo4j-a-star-search/</loc>
+<loc>http://localhost:4000/archive/neo4j-a-star-search/</loc>
 <lastmod>2025-09-14T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/archive/suckless-software/</loc>
+<loc>http://localhost:4000/archive/suckless-software/</loc>
 <lastmod>2025-11-30T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/projects/e-reader/</loc>
+<loc>http://localhost:4000/projects/e-reader/</loc>
 <lastmod>2023-10-24T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/projects/matrix-digital-rain/</loc>
+<loc>http://localhost:4000/projects/matrix-digital-rain/</loc>
 <lastmod>2024-01-12T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/projects/etlas/</loc>
+<loc>http://localhost:4000/projects/etlas/</loc>
 <lastmod>2024-09-05T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/projects/bumblebee/</loc>
+<loc>http://localhost:4000/projects/bumblebee/</loc>
 <lastmod>2025-04-02T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/projects/my-first-pcb/</loc>
+<loc>http://localhost:4000/projects/my-first-pcb/</loc>
 <lastmod>2025-07-14T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/projects/fpm-door-lock/</loc>
+<loc>http://localhost:4000/projects/fpm-door-lock/</loc>
 <lastmod>2025-10-03T00:00:00+08:00</lastmod>
 </url>
 <url>
-<loc>/about/</loc>
+<loc>http://localhost:4000/about/</loc>
 </url>
 <url>
-<loc>/archive/</loc>
+<loc>http://localhost:4000/archive/</loc>
 </url>
 <url>
-<loc>/</loc>
+<loc>http://localhost:4000/</loc>
 </url>
 <url>
-<loc>/projects/</loc>
+<loc>http://localhost:4000/projects/</loc>
 </url>
 </urlset>
-- 
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