Instead of buying a new one for about 25.000 EUR he took a Arduino Mega2560 R3, which he doesn’t really like, but Arduinos are damn cheap, so whatever. So he added a self-made simple relay ...

Aside from the Arduino UNO microcontroller, LDR, and the bulb itself, the hardware for this setup is pretty minimal: a relay for the bulb, a resistor for the LDR, and some wires to connect ...

The Arduino code tells us that the valves will ... As the valves use 24V and the motor 12V, standard N-Mosfets and power relays are used for voltage conversion. The remote controller [Gilard ...