thanks for your reply. Right know I have no fan. I'm thinking of a PWM fan but I don't know how to connect As I figured out the best way to connect a pwm fan is the OUT1100 or REL1100? What do you think? Thanks
Hi,
if you're going for a PWM fan, have a look at my GIT repository
I got this working very well using the OUT1000 and a self-designed simple circuit powered by an ATtiny85.