Hardware Overview

Tribar is an untethered three-bar tensegrity robot driven by six electric motors.  Many parts are commercial-off-the-shelf components listed in this Bill of Materials.  For the custom-made parts, detailed fabrication instructions are given in our guide to assembling the robot.  The open-source designs of the mechanical components are available on GrabCAD.  The circuit board designs in EAGLE are available on GitHub.  Browse the pages below to learn more.

Open-source Hardware

  • Electrical Components

    A compact, custom motherboard hosts commercial PCBs for controlling the tensegrity robot.

  • Mechanical Components

    The three-bar tensegrity robot is made from COTS components and 3D printed parts.

  • Strain Sensors

    Capacitive strain sensors are used to measure the tendons’ lengths for feedback control.