This project use BBC MicroBit and the Kitronics Robotics board to control 4 servos that move each of the fingers.  This was for an after school robotics club with 4th, 5th and 6th graders. They programed the MicroBit to control the fingers and play Rock, Paper, Scissors using 2 MicroBits and the “Radio” commands.

We later added the HuskyLens to add some AI based number recognition.

I hope you have some fun learning with this.

The format of files is in 3MF because I lost most of the original STL when a hard drive crashed, sorry.

Printed in PLA strength not an issue. 

Bolts are M3x20 

I used rubber bands as the extensor tendon running in the hole in the back of the fingers.

Servos need to be a bit stronger than normal, 20kg works.

 I used this board to drive the servos: Kitronics Robotics Board

AI camera:  DFrobot HuskyLens 

The palm/thumb is ¾ inch plywood cut by hand,

base is 2x6 wood for weight

Camera stick is 1x2 about 9 inch long