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Garagemon

This is a program to run on a Raspberry Pi for controlling a garage door.

For me, my garage door opener can be triggered by closing a circuit, so a simple relay module is effective.

My specific hardware:

  • Raspberry Pi Zero WH
  • 3 Channel Relay Module Shield Smart Home for Raspberry Pi (Waveshare)
  • Aussie Openers 800N

To configure for that, fill in a garagemon.yaml file like this:

mode: hardware

hardware:
  action_pin: 26
  action_active_low: true
  led_path: /sys/class/leds/led0
  blink_led: true

See main.go:Config for documentation on the structure and details.

Manual use

If the program breaks like

setting up manual control of built-in LED: open /sys/class/leds/led0/trigger: permission denied

then you'll want to permit non-root access to the built-in LED. Run led-setup.sh.

systemd Automation

To have this run all the time from boot, customise garagemon.service and then

sudo cp garagemon.service /lib/systemd/system/
sudo systemctl daemon-reload
sudo systemctl enable garagemon.service
sudo systemctl start garagemon.service

Tailscale

If using Tailscale on the Raspberry Pi, pass -net_interface=tailscale0 so HTTP is served only on that interface, isolating it from the local network.