Dow Digital Science Center



The hand is controlled by an Arduino Uno microcontroller. The Arduino receives signals from an amplifier circuit and then activates servo motors based on the amplitude.

3-D Printing

The metacarpus was manufactured using a process called 3-D printing. This involves melting layers of plastic together to achieve the final product.


Designing the hand involved using computer-aided design (CAD) software.


Determining the antagonistic muscles used to operate the fingers.

Hand Control

The hand receives signals using a technique called electromyography (EMG).

Engineering Goals

  • Design a functional structure that operates comparably to the human hand

  • Design an electrical system that is capable of actuating the structure

  • Design a myoelectric control system that gives the body control of the structure

  • Design a feedback system that allows the body to receive signals from the structure