AVR microcontroller based PWM fan controllers


Posted on Feb 4, 2014

So this is a bit of a continuation on my 555 timer based PWM controllers, but now using microcontrollers and MOSFETs instead of 555 ICs and transistors. I made 2 versions, one with switches for speeding up and down and the other with a potentiometer like the previous controllers. I used ATtiny25 controllers running at.


AVR microcontroller based PWM fan controllers
Click here to download the full size of the above Circuit.




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