Download video: XY plotter from old scanners
Channel: Walter Gordy
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This is a video of the plotter drawing a sine wave. It was amazing being able to move the pen across the page and move it exactly back to where it started with such little effort. One scanner is pretty old and could only achieve 1200 steps per inch while the other is only a few years old and gets 5000 steps per inch.
Video edited with Blender.