Category
Pi Builds
Sensor hardware for hives, built from parts you can order in one go. Wiring, working code, calibration numbers, and the failure modes we hit so you don’t have to.
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Build a hive scale with a Raspberry Pi and four load cells
A full parts list, wiring diagram, and calibration routine for a $38 scale that logs hive weight every fifteen minutes — accurate to ±40 g once tared against a known…
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Ambient temperature and humidity with a DHT22 on a Pico WH
Battery life, sample intervals, and why the sensor should never sit inside the brood box.
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Running a hive node on solar: what actually survived a cold snap
Panel sizing, an 18650 pack that didn’t die at −4 °C, and the sleep schedule that made it work.