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HC-05 or HC-06 bluetooth modules can be used, it allow a short range wir= eless link with your board or Oplink as Rc module.
To configure the Bluetooth module, you must connect to the module with a= serial link. You can either use an FTDI USB to serial adapter, or your fli= ght controller using the Virtual COM port ComBridge.
Connect your FTDI adapter as follow. Tx/Rx lines are crossed and FTDI pr= ovides +5V.
CC3D or any OpenPilot board can be used as a pass-through device, same a= s previous wiring : Tx/Rx lines crossed.
CC3D need +5V in one output port to power the bluetooth module.
In this case you need to setup the board for Virtual com port (VCP) use = and choose MainPort or FlexiPort as ComBridge.
In this section you first need to find a terminal software to talk troug= h serial connection with your bluetooth module.
For Window systems : PuTTY, under Linux try Cutecom or PuTTY, and =
for MacOSX try CoolTerm
Configure your terminal for 9600 baud rate, 8 data bit, 1 stop bit &= no parity serial connection.
Also be sure to setup "No line end" for data sent.
If later you need to talk with bluetooth mod= ule using a FTDI adapter you only need to change baudrate in terminal setti= ngs.
Using ComBridge, board configuration need to be updated to a 57600= baudrate
Connect your Bluetooth as normal, once you have done this ONLY connect t= he rx of the OSD to the TX cable of your bluetooth-port (creating a y cable= ) ( dont forget your osd still needs power)
Finally, change the Port where the Bluetooth module is attached to "Tele= metry".