Magnetic sensor USB arcade spinner

This is a shell for a USB arcade spinner built around an stm32f103c8t6 blue pill (or clone), an AS5601 hall-effect magnetic sensor, a skate bearing, and arcade buttons.

Build instructions are [here](https://www.instructables.com/Magnetic-Sensor-Arcade-Spinner/).

If you use a different PCB from mine, you'll need to edit the OpenSCAD file and change the PCB dimensions. If the dimensions are large enough, you will need supports for your print.

Version 1 uses simple top mounted tactile buttons. Version 2 uses my fancier 3D-printed [arcade buttons](https://www.thingiverse.com/thing:6052237).