Hi guys, I'm posting for the first time but I have been reading the forums alot and have learned alot aswell. But now I've come to an impass and I need some help.
My problem is that I'm trying to control a computer fan(Arctic Cooling F8 PWM) with the PWM pin from an Arduino Due but nothing happens. I'm sure I've gotten the connections and the code right since it works on a different fan.
The fan itself turns on when connected to a 12V battery, but analogWrite() does nothing. Now I've done some research but I'm not really sure what I'm looking at. There's alot of mention of PWM frequency which I don't fully understand. I read that most of the CPU fans work on a 25kHz frequency but I'm not sure what this has to do with my Due.
Basicly what I need is that I need to understand how all this works, any explanations and documentation are greatly appreciated.
This is the code I got running. Basicly it's hooked up to a lightresistor so when the lights dim, the fan turns on. Like I mentioned earlier it works on another CPU fan I got, the problem might be the PWM frequency.