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Primary Attribute
Category: Jetson
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Brand: Waveshare
International: Waveshare website
Onboard Interfaces
Related Products


Fan for Jetson Nano, support PWM controlling


How to use

Hardware connection

Please connect the Fan to Fan interface of the Jetson Nano Developer Kit, note the direction.

Software setting

  • Running fan: you can use the command below to run the fan in full speed
sudo sh -c 'echo 255 > /sys/devices/pwm-fan/target_pwm' 

【Note】You can change the 255 to other value (0~255) to change the speed of fan

  • You can also set the fan ran when booting by creating and modifying rc.local file
sudo vi /etc/rc.local
  • Add statements below to rc.local file and save
sleep 10
sudo /usr/bin/jetson_clocks
sudo sh -c 'echo 255 > /sys/devices/pwm-fan/target_pwm'
  • Modify file permission
sudo chmod u+x rc.local
  • Then reboot and testing
sudo reboot

【Note】if you are strange to the vi editor, you can also install nano and use it for editing:

sudo apt-get install nano
sudo nano /etc/rc.local


What functions do the four wires of Fan-4020-PWM-5V separately?

Black -> GND; Red -> Vcc; Blue -> Tach; Yellow -> PWM

The color of Tach and PWM may be different among different batch, it is all to the actual products.

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