araynard

Hello mar0ni, I'm trying your last script with a NanoPiM4v2, but bash gives me the following error: /usr/bin/start-rk3399-pwm-fan-v2.sh: line 33: echo: write error: Invalid argument But I can't find the problem in your code. Any idea ? EDIT: I had to add quotes around the file path: echo $DUTY > "/sys/class/pwm/pwmchip1/pwm0/duty_cycle"; It's working great now !