An Arduino Uno and an LM 35 Temperature sensors control the temperature of the rearing tank. The Raspberry Pi Zero’s camera records the progress.

In search of a present for my niece and nephew, I looked at a tadpole shrimp breeding tank. My interest in the little Triops crabs was aroused and after I gave the tank away, I studied websites with breeding tips. The Triops crabs are the oldest known animal species in the world, which has hardly changed for about 200 millions of years Has. This makes them even a bit older than their well-known relatives, the brine shrimp, which in the past were often included in the YPS magazine.

A constant temperature is essential for rearing them, but straight In the cold months it can be quite laborious to keep the temperature constant overnight with a heat source such as a desk lamp. It has to be done differently, I thought to myself. A day later I was the owner of my own breeding tank and the tank upgrade could start.

The transparent tank has a U-shape, which I used to control the Arduino for a water heater to pinch. I also recorded the rearing with a Raspberry Pi camera. The heating foil is operated by an Arduino Uno via a MOSFET and the current temperature by means of an LM 35 – sensor checked. How warm the pool is right now is also shown on a self-made 7-segment display. Access to all contents of heise + exclusive tests, advice & background: independent, critical well-founded c’t, iX, Technology Review, Mac & i, Make, c’t Read photography directly in the browser register once – read on all devices – can be canceled monthly first month free, then monthly 9, 95 € Weekly newsletter with personal reading recommendations from the editor-in-chief Start FREE month Start your FREE month now heise + already subscribed?

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