PIDflight Lap

This guide should apply to most Linux distributions, this was specifically performed on Ubuntu 18.04.

1. Pair to the Bluetooth module (e.g. HC-06/HC-05/HM-10) using bluetoothctl.
   1. Type scan on to discover the Bluetooth module and MAC address.
   2. Type pair <MAC_address> to pair, enter pin/pass code when/if prompted.
   3. Type exit to leave Bluetooth control utility.

      $ bluetoothctl 
      [NEW] Controller B8:D1:3F:07:76:AE CMengler [default]
      Agent registered
       
      [bluetooth]# scan on
      Discovery started
      [CHG] Controller B8:D1:3F:07:76:AE Discovering: yes
      [NEW] Device 20:17:01:12:21:09 PIDFLIGHT
       
      [bluetooth]# pair 20:17:01:12:21:09
      Attempting to pair with 20:17:01:12:21:09
      [CHG] Device 20:17:01:12:21:09 Connected: yes
      Request PIN code
      [PID..agent] Enter PIN code: 1234
      [CHG] Device 20:17:01:12:21:09 UUIDs: 00001101-0000-1000-8000-00805f9b34fb
      [CHG] Device 20:17:01:12:21:09 ServicesResolved: yes
      [CHG] Device 20:17:01:12:21:09 Paired: yes
      Pairing successful
      [CHG] Device 20:17:01:12:21:09 ServicesResolved: no
      [CHG] Device 20:17:01:12:21:09 Connected: no
       
      [bluetooth]# exit
      Agent unregistered

2. Bind to your paired Bluetooth module with RFCOMM.
   1. 0 refers to the device (e.g. /dev/rfcomm0 will be created in this case).
   2. 20:17:01:12:21:09 is the MAC address of the paired Bluetooth module.
   3. 1 is the channel to use.

      sudo rfcomm bind 0 20:17:01:12:21:09 1

3. Open the GUI lap timing app.
4. Select 'Manual selection' from the drop down menu.
5. Enter /dev/rfcomm0 in the 'Ports' field.
6. Click 'Connect'.

sudo rfcomm release 0