Inventor Artist Darcy Whyte wanted a drawing robot that was light enough to carry around, and could quickly produce drawings. Naturally, he turned to an Arduino Uno, along with a CNC shield and a trio of A4988 stepper drivers. These control a NEMA 8 and two NEMA17 stepper motors in a gantry-style artistic setup.
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The build is able to drag a marker across a page, apparently varying pressure applied with the z-axis, and thus how much ink is applied. In another mode, a pen can be used, which wobbles back and forth to create volume when needed.
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Both methods, as seen in the clips below, can sketch a very recognizable—though certainly distinct—portrait of Marilyn Monroe, or presumably whatever other image you choose to program in.
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