Hi there,
I would like to control a 4-pin fan (with PWM facility).
I can see how to implement a PWM of my choice, but I am lost when I try
to read read the tacho from the fan.
I need to to count the number of pulses so I can change the PWM value.
I suppose I need to set a timer, then read the number pulses every second.
I have never used the timer that way. I have looked at the data sheet
(PIC18F242), but I am lost.
Any advice is welcome.
Regards
Francesco
Help with Fan Control
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