DIY pen plotters

Core XY

• jamescarruthers/PlotteRXY - core XY
• Amanp5852/Pen-Plotter - core XY
• PlotterXY - coreXY plotter made form extrusion, 3D printed parts, and an inexpensive 3d-printer control board.
• Slapdash CoreXY

Polar plotter

• Wikipedia
• arvandtiv/polar-plotter
• Mural (source code, video)

2 axis plotters

• Writing machine v2.0 (video) with 2020/2040 frame
• 4xiDraw
• PlottyBot - 3D printed XY plotter based on a Raspberry Pi Zero W
• ExtruDraw - based on aluminum extrusions
• Drawing Robot- 3D printable, Arduino Uno + CNC Shield + GRBL
• IV Projects High-Speed Pen Plotter: grit roller pen plotter, makes for a sleeker mechanical design
  • video explaining
  • video
  • older version video