A Harp Device for controlling an instrumented variable-friction mouse treadmill

Note

This repository contains design files for the electronics assembly. For the mechanical assembly, design files, and bill-of-materials, see the OnShape project.

Features

• linear (no switching!) current control of 12V magnetic brake, Placid Industries B5ZD, datasheet.
• reads measurements from an RTS-10 torque transducer
• wheatstone bridge input for torque transducer
• quadrature encoder input for position/speed measurements
• Harp-protocol compliant over full-speed USB
• accepts Harp time synchronization input.
• reverse-polarity protected power supply.

Register Map

List of Registers

Credits

This board design was created in partnership with the team at Second Order Effects.