Cheap Arduino Based Robotic Claw Prostetic Hand

This project came to mind after being informed Medicare wouldn't pay for a hand, only the hook. so i decided to try to make a robotic hand.The total partscost is well under $100.

servo https://www.sparkfun.com/products/10333

claw https://www.sparkfun.com/products/11524

arduino uno https://www.adafruit.com/product/50https://www.adafruit.com/products/80?gclid=CjwKEAjwns6hBRDTpb_jkbTv1UYSJACBhberXDZgSWJ7KN95BlWx7tvc3ZjtmcyA3Sh_lXhBqeIxOhoCW4Lw_wcB

proto board w/ potentiometer http://www.seeedstudio.com/depot/Protoshield-Kit-...

battery plug

Program the Arduino

Download the Arduino IDE, then download the arduino servo knob sketch. i had to adjust the map values from 0,179 to 5,165. you may lose a few degrees of range, but the servo will last a lot longer not trying to grind past the stops.

Wiring

Wire the servo, arduino, and pot according to the wiring diagram

Soldering

Connect the pot and wires to the proto board, according to the diagram. When your sure everything is connected properly, begin to solder. I didnd't solder my servo connector yet, but know is the time if you plan on not taking it apart. I just used an old piece of board I recycled.

Mount the Servo

Mount the servo in the claw. This part can be a bit tricky. one bolt for mounting the servo is to long and needs trimmed, I used a dremel. If there are any problems I will post a video if there are any problems.

Final Hook Up

Now attach the Arduino and claw to your arm base. This part is up to you since EVERY PROSTHETIC IS DIFFERENT!

edit. I finally got a bracket made with some scrap metal and a few bolts and nuts. The metal came from an old vcr.