Reply To: Watering only when the moisture sensor switches on

[Dirk Hildebrand]

And another question. Yesterday I plugged my OSPi into my Raspberry 3b+. A top-hat rail power supply with 24vAC output was plugged into the OSPi board and my Pi turned on too. Is that normal? I thought I had to supply the PI with extra power. In addition, no lamp on the AD converter was lit. And yes, I am 100% sure that it is a power supply with AC on the secondary side is https://www.amazon.de/gp/product/B00F4QFH4O/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1

What else could I have done wrong?