This project idea came to me when I was sitting on a bed in a hotel room while on vacation. I thought: "It'd be really neat to have a robotic hand that I can control with my own hand!" Upon returning home, I embarked upon a journey to design and create the project. I hope you enjoy!
Update: First Prize winner in the Instructables 2013 Microcontroller Contest!
The basic components of the hand and glove are the hand itself, the servos, the Arduino, the glove, and the flex sensors. The glove is mounted with flex sensors: variable resistors that change their resistance value when bent. They're attached to one side of a voltage divider with resistors of a constant value on the other side. The Arduino reads the voltage change when the sensors are bent and triggers the servos to move a proportional amount. The servos pull strings that act as tendons, allowing the fingers to move. Here's a video of it in action (http://m.youtube.com/watch?v=qMtHEOxHDGo):
The hand itself comes from an open-source, 3D-printable download. It's part of a project called InMoov: http://inmoov.blogspot.com (http://www.inmoov.fr)
This guide will show you all the steps required to build your own robotic hand and control glove!