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  Admitting Defeat

  Sometimes you have to bail out before the sunk costs sink you. Having a good idea isn’t the same as having a good product.

  2025-07-29

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  Back 2 Basics - NMOS Switch

  The latest in my 'back to basics' series. Toggle high-ish voltages and currents from a microcontroller using an N-channel enhancement mode Field-Effect Transistor, also known as an NMOS Switch.

  2025-07-20

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  Reverse Engineering a Broken Night Light - Part 1 - Tear Down

  We bought our first Night Light when our daughter was born; within 3 years, it and its replacement had broken. Let's tear it down, reverse-engineer what's left, and build it back up with some extra 'smart' features.

  2025-07-14

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  Metronalmost

  This metronome, by design, will never, ever, tick exactly once per second. This infuriating object is designed to thwart the goals of Hackaday's One Hertz Challenge contest.

  2025-07-07

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  Trying out the ice4pi from Lightside Instruments

  At the recent Open Hardware Summit, I was lucky enough to run in to Vladimir from Lightside Instruments. He was kind enough to gift me one of their ice4pi iCE40 shields.

  2025-06-28

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  Back 2 Basics - Op-Amp Buffer

  The second in my series of 'back to basics' real, practical, circuits. Today we're building an Op-Amp Buffer.

  2025-06-23

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  Building the Kilnettle Tape Dispenser

  Stephen presented his Kilnettle Shrine Talking Tape Dispenser as a Lightning Talk at the 2025 Open Hardware Summit. He was kind enough to send me one to build.

  2025-06-20