Fan-4020-PWM-5V

Introduction

Fan for Jetson Nano, support PWM controlling Template:Amazon

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

#!/bin/bash
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

FAQ

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

Answer: 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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