2.1 Insert the motor driver board into the arduino board, and insert the ps2 receiver into the socket
2.2 Connect the two motors to the expansion board M3 and M4 respectively
2.3 Connect 4 servos to 3, 4, 5, and 6 of the servo queue. Note that GND corresponds to brown, V+ corresponds to red, and PWM corresponds to yellow
2.4 Insert the power supply DC into the DC socket of the motor expansion board
2.5 Insert 2nd battery into the remote control, turn on the switch, the indicator light flashes quickly, and the indicator light is always on, which means that the receiver is automatically linked to the frequency successfully, and you can operate and test.