Instruction of BT Swtich Pad and BT Auto-Off

Functions of BT Switch Pad

The PINIO function of BetaFlight, enables some spare pads of FC to output high/Low signals based on the Mode assigned by user.

When BT Switch pad receives low signal, BT Nano 3 will disable the Bluetooth, and enable it under high signal.

With PINIO of BetaFlight, BT Nano 3 could achieve the following:

Bluetooth is off during flying, avoiding the 2.4G signal of BT Nano 3 module interfering other 2.4G devices.

Example of using BT Switch:

The following example will show the commands for configuring CC pad of SpeedyBee F7V3 with PINIO2 (4 groups of PINIO functions in total). With Arm mode, PINIO2 will have CC pad to output low signals, and high signals when disarm.

Step 1：
BT Nano 3 BT Switch PINIO CLI commands on SpeedyBee F7V3

resource PINIO 2 A00
resource CAMERA_CONTROL 1 none
set pinio_config = 129,129,1,1
set pinio_box = 0,0,255,255
save

Step 2：

Connecting BT Switch of BT Nano 3 with CC pad of SpeedyBee F7V3

Test：

Arm SpeedyBee F7V3, turn to SpeedyBee App to check if BT Nano 3 device could be found, and configuration will be correct if it could not be found;

And BT Nano 3 could be found at SpeedyBee App when SpeedyBee F7V3 is disarmed.

Bluetooth Automatically Turns Off(BT Auto-off)

The above instruction of BT Switch may be a little complicated for users who are not familiar with CLI or PINIO functions of BetaFlight. Therefore, BT Nano 3 also features BT Auto-off function. No more extra soldering and configuration (connecting BT Nano 3 with Tx and Rx of FC and turn on MSP on the Ports tab are still necessary), Bluetooth signal will be on or off automatically based on the armed/disarmed status of FC. This feature is available for BetaFlight/iNav/EmuFilght.