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Open-source myoelectric hand prosthesis

Posted by Ryan on 18 May 2017

Pololu customer Alvaro Villoslada made this impressive open-source 3D-printable hand prothesis. Each finger uses a 1000:1 Micro Metal Gearmotor HP 6V with Extended Motor Shaft to wind a fishing line—acting as a tendon—onto a spool. A magnetic encoder attached to each motor enables closed-loop control, and the motors are driven by DRV8838 DC motor driver carriers. An RC hobby servo controls the thumb position. Alvaro uses a Teensy 3.1 microcontroller to monitor the encoders and control the actuators, and he built a user interface in Python for controlling the hand from a computer.

For CAD files, detailed instructions and more pictures and videos, see the Hackaday project page.

	1000:1 Micro Metal Gearmotor HP 6V with Extended Motor Shaft
	Magnetic Encoder Pair Kit for Micro Metal Gearmotors, 12 CPR, 2.7-18V
	DRV8838 Single Brushed DC Motor Driver Carrier

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I have no words. I am amazed to the core. Very impressive!

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