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Pulse Counter 3-pin fan PC
Posted: 26 Mar 2017, 19:14
by Jufo
Hi,
Will this solution work? Use a pulse counter to measure the speed of the PC fan:
Re: Pulse Counter 3-pin fan PC
Posted: 28 Aug 2017, 10:44
by themanfrommoon
Hello Jufo,
I cannot see the picture you posted?!
Did you get it working?
Thanks and best regards,
Chris
Re: Pulse Counter 3-pin fan PC
Posted: 28 Aug 2017, 13:58
by LisaM
Jufo wrote: ↑26 Mar 2017, 19:14
Hi,
Will this solution work? Use a pulse counter to measure the speed of the PC fan:
5-seconds google search:
http://pcbheaven.com/wikipages/How_PC_Fans_Work/
3rd wire contains pulses which can be counted...
Re: Pulse Counter 3-pin fan PC
Posted: 28 Aug 2017, 14:28
by themanfrommoon
Hello LisaM,
thanks for your answer!
I know for at least 25 years that a PC fan has 3 wires, Vin, GND and a tach output. But this was not the question.
Jufo asked if his solution of connecting the tach signal to the ESP will work.
But I cannot see his picture, he (or she?!) has posted.
And he did not get any answer.
Maybe he found something out by himself or anybody else has helped him?!
So I am interested in this topic, if there is a solution or not.
Thanks and best regards,
Chris
Re: Pulse Counter 3-pin fan PC
Posted: 28 Aug 2017, 16:06
by LisaM