@avatario Hi, I managed to fix the wiring!The problem was the GND cable that went from the Arduino to the PSU negative terminal in your wiring diag...

@avatario Okay I did some more testing (hopefully I'm not breaking anything). So if I remove the ground between the terminal and the Arduino, but...

@avatario Do you mean switching the "PWM Output 1 optional relay reversed logic" from "ON" to "OFF"?I have already tried this. When I do it, the fa...

I tried creating my own wind simulator by using the wiring diagram you had drawn. Thanks for the help on that! I used an official Arduino Uno R3, 2x...