That's why you can't really set fan policy in BIOS it's locked and Acer doesn't want us tinkering with it. You could easily get 100 degrees Celsius on your CPU or GPU, while fans will barely rotate at 40% of their full speed, as if everything is fine.Īcer representatives again and again state that everything works as intended and SmartFan is perfectly capable of cooling your system effectively (and I don't judge you guys, you do what you got to do). Gpio pwm 26 100 #Turn on the fan to maximum duty cycle 100Īnd that's it! The downside of this is that everytime you turn on the pi-top, you'll have to rerun the commands to get the fan spinning.Most of you (sadly) probably already know that Acer Predator (and others) systems tend to severely overheat, and the 'best' thing is - cooling doesn't seem to really care. Gpio pwmr 100 #Change the PWM Duty Cycle Range to be 0-100 Gpio pwmc 22 #Change the PWM Clock Divider to 22 Gpio pwm-ms #Configure the pwm signal to be in mark-space mode gpio mode 26 pwm #Configures WiringPi pin 26 (GPIO 12) to a PWM pin The five lines of code to get the fan running need to be typed line by line into the command line. The alternative function is listed as PWM which is perfect for controlling the speed of a fan. You can see it highlighted in the table below from pinout.xyz. In our case, the fan PWM control is connected to BCM pin 12/WiringPi pin 26/Physical pin 32. If you want to learn more about this, head on over to pinout.xyz.

If you're using any alternate functions such as I2C or SPI then the relevant pins will tell you the Mode as the relevant alternative function. The table mostly just shows the status of the digital pins. To test everything was installed correctly, run the command: gpio readall WiringPi has been preinstalled on the Raspbian for years but there is a fix required for running it on the Raspberry Pi 4B. Once connected, power up the device and open a command line. This fix uses WiringPi. You will have to remove the warranty void sticker that covers the connector J2 to unplug the fan cable and then connect it to J8.

Tpp fancontrol