Raspberry Pi PWM Fan Hat

DeviceTree overlay for a Raspberry Pi HAT with a PWM fan, based on https://github.com/lzoledziewski/rpi-pwm-fan

The fan's PWM wire should be connected to GPIO18 (PWM0). This can be changed to a different PWM pin with the pwms property in rpi-pwm-fan-overlay.dts.

Install Dependencies

sudo apt install make gcc device-tree-compiler

git submodule update --init --recursive
cd hats/eepromutils
make && sudo make install

Build

make

Flash to HAT EEPROM

sudo make flash

Enable Driver

Add to /boot/config.txt:

[all]
dtoverlay=pwm
dtoverlay=rpi-pwm-fan

Install

If not using a HAT EEPROM, you can install the files to your system:

sudo make install

This can be reversed with: