i ordered me a new pool heater a few days ago. While i had to change the connection cable, i opened the electrical box of my XPS 70 heater. There is the following wiring diagram inside the box:
Now i want to make this thing smart by adding something like a Wemos D11 or similar to get information about the temperatures and set temperature and turn it on and off. I am able to design circuit boards and program the arduino code eventually. But i need someone with the detailed technical insights of the onboard PCB.
