Making Pomidor, a Pomodoro timer

I made an electronic Pomodoro timer from scratch. Read on for a story on software, PCB design, production and assembly, with a sprinkling of inevitable catastrophe.

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Saturday project: temperature and humidity meter with Onion Omega2+

Quick thing I threw together in about an hour: an IoT temperature and humidity meter!

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Ultrasonic theremin

I’ve been wanting to construct an instrument in the spirit of a theremin for quite a while. Of course, I have neither the skills to construct a proper theremin, nor the time to master them. What I do have is an Arduino board, some sensors and a couple of spare parts.

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