✎ pidflightlap:guibluetoothlinux [rotorOverflow]

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====== PIDflight Lap ======
===== How to connect to Bluetooth with the GUI application for Linux =====
This guide should apply to most Linux distributions, this was specifically performed on Ubuntu 18.04.

  - Pair to the Bluetooth module (e.g. HC-06/HC-05/HM-10) using ''bluetoothctl''.
    - Type ''scan on'' to discover the Bluetooth module and MAC address.
    - Type ''pair <MAC_address>'' to pair, enter pin/pass code when/if prompted.
    - Type ''exit'' to leave Bluetooth control utility.<code bash>
$ 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
</code>
  - Bind to your paired Bluetooth module with **RFCOMM**.
    - 0 refers to the device (e.g. /dev/rfcomm0 will be created in this case).
    - 20:17:01:12:21:09 is the MAC address of the paired Bluetooth module.
    - 1 is the channel to use.<code bash>
sudo rfcomm bind 0 20:17:01:12:21:09 1
</code>
  - Open the GUI lap timing app.
  - Select 'Manual selection' from the drop down menu.
  - Enter ''/dev/rfcomm0'' in the 'Ports' field.{{ :pidflightlap:pidflightlap_gui_bluetooth_linux.png?nolink |}}
  - Click 'Connect'.

<WRAP center round info 60%>
When you have finished with the Bluetooth connection, type the following to release the rfcomm0 device.
<code bash>
sudo rfcomm release 0
</code>
</WRAP>
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