the hand

An arrogant robot that plays rock, paper, scissors with human beings



The Hand is an interactive installation designed, built, and exhibited in 2017 with collaborator Tong Wu. The piece was conceived as an exploration of how humans interact with humanoid machines. Can you build a machine with a personality? How would someone respond to it if you did?

The Hand is composed of a 3D printed arm with fully articulating fingers, controlled by individual motors. It hangs inside of a laser cut acrylic enclosure, rotating on a steel pipe that runs through the middle of the forearm. Users interact with The Hand via Leap Motion gesture tracking.

All code for this project can be found on github.


  • Arduino

  • Leap Motion

  • Node.js

  • Vectorworks

  • Illustrator

  • Ultimaker 2+


  • 2 Arduino nanos

  • 6 servo motors ()

  • Stepper motor (NEMA 17)

  • Leap Motion controller


  • Physical computing

  • Rapid prototyping

  • Mechanical engineering

  • 3D design & printing

  • Fabrication

  • Installation

My role

  • Concept creation

  • Physical & interaction design

  • Mechanical engineering

  • Software development

  • Fabrication