DoorbellCamera

Useful links

• MotionEye
• MotionEyeOs
• HomeAssistant
• HA PyScript

Configurations

Camera: Raspberry Pi NoIR Camera Module V2

MotionEyeOs camera: Camera type: Local V4L2, Camera: MMAL (Need to enable "Legacy Camera" in raspi-config first)

Install the daemons

Copy the systemd config files to the user's service directory

pi-doorbell: the daemon that listens for button presses

speaker-keep-alive: a daemon that regularly plays inaudible sound files on a bluetooth speaker to prevent auto-shut off

wifi-keep-alive: a daemon that regularly checks the internet connection and reconnects or reboots if necessary

$ # install
$ pip3 install python-vlc
$ mkdir ~/.config/systemd/user
$ cp resource/pi-doorbell.service ~/.config/systemd/user/
$ cp resource/speaker-keep-alive.service ~/.config/systemd/user/
$ cp resource/wifi-keep-alive.service ~/.config/systemd/user/
$ # create log file and change owner
$ sudo touch /var/log/doorbell.log
$ sudo chown <user>:<user> /var/log/doorbell.log
$ sudo chmod 664 /var/log/doorbell.log
$ # turn services on
$ systemctl --user enable pi-doorbell.service
$ systemctl --user start pi-doorbell.service
$ systemctl --user enable speaker-keep-alive.service
$ systemctl --user start speaker-keep-alive.service
$ systemctl --user enable wifi-keep-alive.service
$ systemctl --user start wifi-keep-alive.service
$ # check status
$ systemctl --user status pi-doorbell.service
$ systemctl --user status speaker-keep-alive.service
$ systemctl --user status wifi-keep-alive.service
$ journalctl --user-unit pi-doorbell.service
$ journalctl --user-unit speaker-keep-alive.service
$ journalctl --user-unit wifi-keep-alive.service

Optional: install webhook server daemon

wh-server: a node server with a webhook endpoint. Triggering the webhook starts an ffmpeg job to record from a camera livestream.

$ cp resource/wh-server.service ~/.config/systemd/user/
$ systemctl --user enable wh-server.service
$ systemctl --user start wh-server.service
$ systemctl --user status wh-server.service
$ journalctl --user-unit wh-server.service

Install bluetooth-autoconnect

Once the desktop is disabled, Raspberry Pi OS might not automatically reconnect to trusted, paired bluetooth devices at boot.

Follow installation instructions and enable as a daemon using systemctl

Install Health Checker

$ crontab -e
$ # add an entry for the full path to script/check-daemon.sh

Runtime Configuration Files

These are used for storing configuration data used by various scripts. The scripts expect them to be in the main directory of the repo