I was wondering if I could use the Arduino Uno's PWM pin to control a PWM fan's speed? and supply auxillary power to actually drive the fan. I will be using it as a control hub for the rest of my computer such as fan speed, lighting, temperature, etc. If its possible, then how would I go about doin…

Arduino Uno to Control PWM Fans?

system April 18, 2014, 2:29pm 13

@OP,
see attached fan wiring pinout

Here's tutorial on controlling computer fan speed.