Extruder Visualizer Rotation Matrix

This is an extruder visualizer designed for the Original Prusa. It is inspired by a rotation matrix in linear algebra. Attach this visualizer and you'll see a translating rotation matrix! It is for use with two neodymium magnets (φ8×3mm).

Prusa blog discussing extruder rotation indicators.
https://blog.prusaprinters.org/visualize-extruder-motor-movements/

### Print instructions
1. **Color change**: To change the color of the base plate, letters and arrows, the print file (.gcode) uses the color change function. You can change the color of the letters and arrows by unloading or loading the filament.
**Note**: If you want to change the filament automatically using MMU2S, download the data (.3mf) and set up the print settings for the base plate, arrows and letters respectively.
2. **Resolution**: Letters should be as high resolution as possible. You may want to print with a 0.4mm nozzle and 0.1mm layer height.
3. **Ironing**: Ironing improves the appearance. However, the lett