This 3D Printing hack uses Sharpies and translucent filament to print in multi color. Uses three servos and a Pi Pico From Blake3dcake on GitHub:
This device uses servo motors to position markers precisely so they brush against the filament.
The first step is to 3d print the mechanism (the files should not require support). The ‘markerholder’ pieces are designed for sharpie brand markers and require an M3 brass inserts as well as the orginal MG90s servo horn screws(theyre tiny so dont lose them!). A soldering iron can be used to heat up an insert and then press it into the plastic. Once inserted, M3 screws can be tightened to hold the markers in place. If you don’t have a soldering iron consider using tape. If you want to use different markers consider designing new holders(dont forget to post them here). M3 sccrews and nuts can be used to secure everthing else in place.
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Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: Open Hardware is In, New CircuitPython and Pi 5 16GB, and much more! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi
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