<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>Pcb-Design on CastrLab</title><link>https://castrlab-blowfish-244231.gitlab.io/tags/pcb-design/</link><description>Recent content in Pcb-Design on CastrLab</description><generator>Hugo -- gohugo.io</generator><language>en</language><managingEditor>luke@castrlab.com (Luke Paulson)</managingEditor><webMaster>luke@castrlab.com (Luke Paulson)</webMaster><copyright>© 2026 Luke Paulson</copyright><lastBuildDate>Mon, 11 May 2026 00:00:00 +0000</lastBuildDate><atom:link href="https://castrlab-blowfish-244231.gitlab.io/tags/pcb-design/index.xml" rel="self" type="application/rss+xml"/><item><title>Rev 1: a curated set of mistakes</title><link>https://castrlab-blowfish-244231.gitlab.io/posts/adc-dev-r1/</link><pubDate>Mon, 11 May 2026 00:00:00 +0000</pubDate><author>luke@castrlab.com (Luke Paulson)</author><guid>https://castrlab-blowfish-244231.gitlab.io/posts/adc-dev-r1/</guid><description>Rev 1 of my ADC noise project has one deliberate mistake, a couple of knobs to turn later, and best practice everywhere else — here&amp;rsquo;s what&amp;rsquo;s on the board and why.</description></item><item><title>Framework Serial: A USB-Serial Bridge with Programmable IO Levels</title><link>https://castrlab-blowfish-244231.gitlab.io/posts/framework-serial-v1/</link><pubDate>Sat, 26 Mar 2022 00:00:00 +0000</pubDate><author>luke@castrlab.com (Luke Paulson)</author><guid>https://castrlab-blowfish-244231.gitlab.io/posts/framework-serial-v1/</guid><description>First attempt at the Framework bus tool — a clever power topology around a single bridge IC, undone by a software architecture I should have seen coming.</description></item><item><title>Approximating Planar Inductors</title><link>https://castrlab-blowfish-244231.gitlab.io/posts/approximating-planar-inductors/</link><pubDate>Wed, 30 Sep 2020 00:00:00 +0000</pubDate><author>luke@castrlab.com (Luke Paulson)</author><guid>https://castrlab-blowfish-244231.gitlab.io/posts/approximating-planar-inductors/</guid><description>A validation test to compare different planar inductor approximation methods.</description></item></channel></rss>