While looking for a present for my niece and nephew, I noticed 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 crayfish are the oldest known animal species in the world, which has hardly changed for about 200 million years. 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.

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