Moving the hand
In order to move the servos, you can use a servo controller similar to the one introduced in Chapter 3, Building a Wall-E Robot, to control six servos that will control these fingers, thumb, and wrist. As in Chapter 3, Building a Wall-E Robot, the servo controller you are going to use for this project is a simple servo motor controller utilizing USB from Pololu. Since you only need to control five servos, you can order the six servo controller version available at http://www.pololu.com.Here is an image of the unit:
Make sure you order the assembled version. This piece of hardware will turn USB commands from the Raspberry Pi into ...
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