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  4. 3.Power-on test servo works normally

3.Power-on test servo works normally

Connect the four servos to the expansion board, power on, use the joystick to test the four servos, and then install the acrylic arm after the test is normal.

Note: Be sure to connect all the boards first, plug in the servos, test the servos, and install the acrylic parts. If the robot arm does not move, the problem will not be easy to check.

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