Read the statement by Michael Teeuw here.
A fan script for a beginner
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https://hackernoon.com/how-to-control-a-fan-to-cool-the-cpu-of-your-raspberrypi-3313b6e7f92c
I use this.
It works fine, even wit a Google AIY Hat on top of the RPI.
I hope it works for you too.
Peter -
@peter so, you made a transistor based relay… cool…
but that doesn’t help his speed control question…
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@cyrus1337 the specs do not say how the yellow wire is used to control the fan.
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Maybe you misunderstand me. I just want to turn on the fan and turn it off when the CPU has more than 50 °. I have 3 wires on my fan as shown above.
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That is exactly what I told you before.
Read the article and you will see how to connect the 3 wires.
And you can change the temperature of the fan to start.
My fan starts at 65 and runs for 30 seconds to cool the cpu.
Peter -
Thanks, I want to try it
