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Now let us solve the problem of pwm fan not running in umbrel 1.0:
We can use python code to make the pwm fan run. There is a '''pwm_fan_control.py ''' file in the x735-script directory. You can run '''python3 pwm_fan_control.py ''' to make the fan run, it's that simple.
After the fan runs successfully, we need to let the '''python3 pwm_fan_control.py ''' command run automatically after booting, so we need to modify change the '''x735-fan.service ''' file as follows:
cd
cd x735-script