nRF52840
AI
Giving Claude Code a Logic Analyser: A Minimal Bench Harness for Zephyr on the nRF52840
An AI coding agent can write, build and flash firmware, but it cannot see the LED. This article builds a small Claude Code harness for Zephyr on the nRF52840 DK that closes the loop with real measurements from an Analog Discovery, and shows what it caught that reading the code never would.
Derek Molloy
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Oct 26, 2026
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45 min read
Zephyr
The Zephyr Devicetree: An Interactive Demo
A gentle, but complete introduction to the Zephyr devicetree, taught through the one thing every beginner gets wrong - which way round an LED is wired. Built from nothing on a low-cost Seeed XIAO nRF52840, with three onboard LEDs, one external LED wired deliberately backwards, and a button.
Derek Molloy
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Aug 07, 2026
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69 min read
Zephyr
The Zephyr Web Server, Now in C++: Classes for Embedded Hardware
A short follow-on from the Zephyr Thread web server guide, rebuilding the same project in C++ on the Seeed XIAO nRF52840, and adding the RGB LED and the on-die temperature sensor to show why classes suit Zephyr hardware so well.
Derek Molloy
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Jul 06, 2026
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22 min read
Zephyr
A Zephyr Web Server on the Seeed XIAO nRF52840, over Thread (C/C++)
In an earlier guide we built a tiny web server on an ESP32-C3 in async Rust, using Embassy. A browser could connect over
Derek Molloy
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Jul 03, 2026
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34 min read