https://www.reddit.com/r/i3wm/comments/9wqt4k/connect_to_bluetooth_devices_on_i3/
$> service --status-all
$> bluetoothctl
# (optional)
$> power on
$> agent on
$> scan on
$> scan off
$> pair AA:BB:CC:DD:EE
$> connect AA:BB:CC:DD:EE
$> exit
https://www.reddit.com/r/i3wm/comments/9wqt4k/connect_to_bluetooth_devices_on_i3/
$> service --status-all
$> bluetoothctl
# (optional)
$> power on
$> agent on
$> scan on
$> scan off
$> pair AA:BB:CC:DD:EE
$> connect AA:BB:CC:DD:EE
$> exit