This robot hand demonstrates that a fully articulated, five
digit robot hand can be constructed using extremely inexpensive
and easily-sourced materials.
The hand was constructed using a Makerbot Replicator2, the drive-electronics were
simple MOSFET PWM-switching supplies driven by a lab
power supply, and the PWM generator was an Arduino Nano
V3.0. Thus, the cost of the entire arm was less than 20
dollars.