Three-axis gyroscope Bluetooth module $ 8.30 Applicable gender: neutral Type of aircraft: helicopter Toy type: electric toy Connection steps: Connect the wiring, power up, when the device is not connected, the white LED on the Bluetooth module board flashes On the PC, search for Bluetooth devices. Find the device named "LINVOR" Turn it off, the password is "1234" When the connection is normal, you can see that the LED is always on.