I am sorry in advance if this is not the correct forum for this subject. I am a beginner with arduino and I have a basic understanding of electronics but barely any information about programming. I am working on a project where I want to translate the output from the PWM pin on a computer cpu fan header and control 3 relays on different values of duty cycles.
To put it differently, I want to take the range of pwm output that goes to control a cpu fan and divide it into 3 relays which control the 'Low', 'Medium' and High ranges.
I understand if its not much to go with but I am willing to furnish any info that is necessary. Please help me out.