Exercise machine USB game controller case

This is a case for an STM32F103C8 (Arduino core) based exercise machine USB game controller. You connect an elliptical machine or exercise bike to the controller, and pedal speed emulates a USB joystick slider. You can also plug a Wii Nunchuck or Gamecube controller into it for directional control.

Build instructions and schematic [here](https://www.instructables.com/id/Exercise-Machine-USB-Game-Controller/).

Total parts costs are around $10.