Hi everyone. i have a amd 4 pin fan run on 5v. i want to control it. i has a pwm control feature to control its speed. but i still couldnt find out the working frequency range. so i was trying to make a code to serial print the number corrosponding to the frequency and arduino send the same frequency at paricular pin. can anybody help me out. im working on it from 4 hours but unsuccessful. i have arduino mega2560.
A few CPU fan control projects for Arduino are posted on the web, for example:
https://projecthub.arduino.cc/tylerpeppy/b5618d48-7ae8-4fc0-bca5-a857c36fcc5e
A 4-wire fan has power, ground, a tach output, and a PWM-drive input.
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