Whiteboard Bot
thingiverse
A whiteboard drawing bot that has three pens and an eraser! A single motor controls the pens and the eraser thanks to a Spherical Geneva Drive. It uses Expo Click retractable markers, which retract when unused to keep the ink from drying. https://youtu.be/cjOSiXkg0Ww I will upload the firmware shortly! Parts: 3x Expo Click dry-erase markers 4x CY-8H 8mm transfer roller bearings 4x 12mm x 2.5mm neodymium magnets Felt 2x M5 screws (100mm and 55mm long) 30mm x 5mm ID spring 4mm M3 grub screw 7x 6mm M3 screw 4x 8mm M3 screws 2x 10mm M3 screws 2x 12mm M3 screws 4x 20mm M3 screws 2x 25mm M3 screws 2x M3 nuts 2x NEMA 17 pancake motors 2x 16-tooth GT2 pulleys GT2 Belt 2x 4x10x5 bearings
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