Topic

Devicetree

Zephyr from Zero on the ST Nucleo-F401RE: Watching the Scheduler Work Zephyr

Zephyr from Zero on the ST Nucleo-F401RE: Watching the Scheduler Work

A complete beginner's path onto the Zephyr RTOS using the low-cost ST Nucleo-F401RE, from installing the toolchain to a four-thread demo whose scheduling you can watch on a logic analyser.

Derek Molloy Derek Molloy · Aug 31, 2026 · 62 min read
The Zephyr Devicetree: An Interactive Demo 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 Derek Molloy · Aug 07, 2026 · 69 min read