pir-player

Rust program to automatically play songs, when a GPIO-connected PIR sensor detects motion.

Building from source and deploying for Beaglebone Black

install cross
add a host entry for your BBB called juker to your ssh config
run bin/deploy

Requirements

BBB using the recommended debian image from https://www.beagleboard.org/getting-started
pulseaudio installed (for using bluetooth speakers)
mpg123 installed (for playback)
psmisc installed (for handling processes)
PIR sensor connected via GPIO pin 60
placing your music into /mnt/music

Scheduled process

root crontab

# Mount the sd card on startup
@reboot mount /dev/mmcblk0p1 /mnt
# Sadly this is required due to a bug in pulseaudio
@reboot sleep 30 && systemctl restart bluetooth

user crontab

# Every minute between 6am to 12am, connect the bluetooth speaker, if it's not connected yet.
* 6-23 * * * pacmd list-sinks | rg -q SoundCore || bluetoothctl connect 08:EB:ED:A2:E9:B9
# Every minute between 6am to 12am, start the binary, if it's not started yet.
* 6-23 * * * ps aux | rg pir-player | rg -q -v 'rg pir-player' || (cd /home/debian && /home/debian/pir-player >> /home/debian/output.log 2>&1)
# Close the player at 1am.
0 1 * * * killall pir-player && killall mpg123

Debugging

Run the binary with -d to debug the music player.
Run the binary with -q to debug the sensor.

TODO

allow for configuration of GPIO pin, folder location, music client
touchscreen-friendly frontend for pause, play, skip, etc.
support for remote file playback