The pen control unit for a DIY x-y plotter that hangs vertically from my bedroom wall. Designed to be scalable, the pen control unit travels on 2 lengths of flat "rope" that are each controlled with a matching stepper motor. The stepper motors are driven by an Arduino, communicating with Python. My current can be driven manually or can plot SVG (scalable vector graphics) directly.
Inspired by:
www.hektor.ch/
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