He’s copied the basic design of a solar pool heater but managed to do it using ... at which point it cycles the system for 10 minutes, pumping the warm water into the pool, and refilling itself ...

Depending on the type of consumer solar panels, the technology can power your home's security system, store energy in batteries for portable electricity, and even heat your pool. Yes, you read ...

Using a combination ESP32 and ATtiny to both control the heater and report its temperature, all that’s left is to program Home Assistant to get the new system to interact with the solar system ...