Scripts to control an externally attached fan to the Raspberry Pi 3.

Tutorials referred

• http://www.instructables.com/id/Automated-cooling-fan-for-Pi/
• https://hackernoon.com/how-to-control-a-fan-to-cool-the-cpu-of-your-raspberrypi-3313b6e7f92c

How to use

control_fan.py is the script that monitors the temperature and switches the fan on or off as required.

run_fan.sh is a script used to start control_fan.py and put it in the background.

Monitoring

monit can be used to monitor run_fan.sh and restart it in case of failure. Example config:

check program pifan path "/home/pi/scripts/run_fan.sh status"
  start program = "/home/pi/scripts/run_fan.sh start"
  stop program = "/home/pi/scripts/run_fan.sh stop"
  if status == 1 then restart

See also

quirks.md for some implementation decisions.

Blog post for physical setup.