I created and uploaded several important files and updated the documentation today. You'll see PDFs in the "files" section of this project here on hackaday,io, and the similar updates in Github.

• Schematic
• BOM
• Code plan for reading and writing the cores
• Development plan
• Electrical Block Diagram
• Software Block Diagram
• Manufacturing Considerations
• And licensing and permissions analysis of everything I'm making use of

I also added an STL of the stylus, designed with Onshape.

And finally the code that has been updated to show the symbols on the LED matrix.