Delta Pen Plotter Draws In Multiple Colors

András Vujovits built a delta-geometry pen plotter driven by two NEMA 17 stepper motors and controlled by an Arduino Nano with a GRBL shield. A standout feature is the magnetic tool changer, which lets the plotter swap between Muji ballpoint pens of different colors mid-drawing without losing positional accuracy. The pen carriage is kept lightweight by offloading the pen-lifting actuator to the main body, resulting in fast plotting speeds. Build plans are available for purchase.

Source: https://hackaday.com/2026/07/26/delta-pen-plotter-draws-in-multiple-colors. 8sync News only summarizes and links out; content copyright belongs to the authors and original sources.