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  Oops! All Servos! is Available

  My Oops! All Servos! expansion boards for XIAO / QT Py microcontrollers, with servo headers and level shifters, are now available for purchase. Development sponsored by JLCPCB.

  2026-08-25

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  Extending CircuitPython with Native Modules - Part 3

  For CircuitPython Day 2026, I wanted to get close to the metal and write a module in C that I could call from CircuitPython. Finally, we bundle everything inside a class.

  2026-08-21

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  Extending CircuitPython with Native Modules - Part 2

  For CircuitPython Day 2026, I wanted to get close to the metal and write a module in C that I could call from CircuitPython. This time, we're looking at adding a module-level method.

  2026-08-20

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  Extending CircuitPython with Native Modules - Part 1

  For CircuitPython Day 2026, I wanted to get close to the metal and write a module in C that I could call from CircuitPython. This time, we're looking at the build process and adding an enum.

  2026-08-19

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  Let's Teardown a Forty Quid Managed Switch

  A managed switch with 2.5G and 10G networking for less than £40 showed up in my recommendations. Time for a cheap teardown, and who knows, maybe more.

  2026-08-17

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  Testing Oops! All Servos!

  Do the level-shifters work in both directions? Can you measure the current draw? How far can you push the Oops! All Servos!, microcontroller and servos? Development sponsored by JLCPCB.

  2026-08-10

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  Adding Dark Mode to my Blog

  I've finally caved; against my better judgement, I've added a dark colour scheme to my blog. In 2026, with modern CSS, this is easier than you might imagine.

  2026-08-04