Meet Ada Hand: a fully articulated robotic hand you can pick up for 500 pounds for your robotics projects. The hand has 5 degrees of freedom and can be controlled from a PC or Mac. The PCB has the ATMEGA2560 microcontroller and can be programmed using the Arduino programming environment.
The Ada Hand comes with a custom PCB, 3D printed parts, actuators, fingerprint grips, and everything you need to get started. More information is available here.