Sold by German DIY store OBI, the OBI Energy Tracker is a €15 set of two devices, one of which you essentially stick on top ...

Learn how to repurpose your spare ESP32 boards into cost-effective presence detection sensors using the Tommy Sense ...

After testing multiple handheld fans from Dyson, Jisulife and Blueair, the Shark ChillPill stood out to me because of its two ...

These are the projects I recommend building instead of just buying something off the shelf.

As part of my quest to replace the potentially dangerous electronics in a recently acquired fan speed controller, the first step is for the Arduino to know exactly when the mains AC waveform is at the ...

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