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this is a simple robotic arm,not contain any servo motor uses dc gear motors and some gear combinations with a homemade pcb circuit

Step 1: MAKing

1.Make the jaw using warm gear mechanism or see its pic in uploads

2.use dc gear motors for different degree of freedoms,in uploads

3.use motor clamps to fix the motors

4.you can use bearings for better move or to decrease load on the motor shaft

5.use a heavy base on which the arm get attached without falling

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