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  Cheap and Dirty 5-volt Supply

  The old adage goes, 'if it's stupid, but it works, then it's not stupid.' This is possibly the cheapest and dirtiest 5-volt power supply money can buy.

  2025-11-07

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  Touchy Subject is Available

  My Touchy Subject breakout boards for the AT42QT2120 12-key capacitive touch sensor, whose development was sponsored by PCBWay, are now available for purchase.

  2025-11-06

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  Open Hardware Month 2025

  October is Open Hardware Month, and the Open Source Hardware Association is celebrating with a 12-hour live stream on the 6th. See amazing makers show off their projects and share why Open Hardware is important.

  2025-10-03

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  Contributing to the CircuitPython Community Bundle

  I've been building a new PCB around the AT42QT2120 touch sensor, and to make use of the board I wanted to write a CircuitPython driver for it and publish it for others to use.

  2025-10-02

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  Introducing Touchy Subject

  I'm proud to announce the release of Touchy Subject, a Qwiic/STEMMA QT compatible breakout board for the AT42QT2120 12-key capacitive touch sensor, the development of which has been sponsored by PCBWay.

  2025-09-25

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  Designing 3D Printed Sewable Badges

  My daughter's going as a pirate for Halloween. Here are the steps I followed to design and print a sewable cap badge for her Tricorne.

  2025-09-03

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  Installing CircuitPython on a Freenove ESP32-S3-WROOM CAM Board

  In celebration of CircuitPython Day 2025, here's how I installed CircuitPython on one of my favourite, but unsupported, boards, the Freenove ESP32-S3-WROOM CAM Board.

  2025-08-15