【Science kit】WIRED CONTROL ROBOT ARM

Please confirm the battery level, whether the battery is installed correctly, and whether the shrapnel is installed backwards. If the shrapnel is not in good contact with the battery, it will not be able to start without power.

Please check the instructions for assembly of M2, M3, M4, and M5, and confirm whether the sequence of the motor terminals and the control board is wrong.

Please check whether the order of the gear combinations in the gearbox is wrong or reversed according to the instructions.

It is recommended that you turn on the controller to check whether the shrapnel is in the wrong direction, or it may be that the metal shrapnel is excessively used to produce metal fatigue at the critical point of breaking.

Usually the operation is not smooth because the burrs are not trimmed cleanly. Check whether the burrs of the parts are completely cut according to the instructions.

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