Alwarerc Senrigan GP-55 3-Axis Brushless Gimbal V2 With Bluetooth (For 600 -1000 Size Multicopter) - Manual (Page 13)

Install the Gimbal Controller using
Round Cap Screw M3x4mm *2pcs
Stick the Bluetooth Moudle as shown. Connect the Bluetooth Module to the
Controller. (Tips: RX--> TX , TX-->
RX)
Wiring all Motor and IMU wires through
the center hole of the motors and along
the Gimbal Frame Ribs. Connect the end side of the IMU wire to
I2C port on the Controller.
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