I need to fill a tank 1.5 km away, so I create a 2-part controller.
A server with a relay to manage the pump and a client solar/battery-powered to check the tank's status and notify the server's status.
Here is a little video where I show the server's PCB soldering and component mount.
Code, PCB, and articles on www.mischianti.org
https://www.mischianti.org/category/p...