I’m very late to the party noticing the stripped down, simplified, and well documented hanging wall plotter by Norbert “HomoFaciens” Heinz posted by Liz Upton back in 2015! Norbert’s blog post provides lots of photos and details, while his videos more information with additional nuance.
One of the things I love about this style of drawing robot is that all the materials and hardware are fairly inexpensive, much of it can be built out of materials people already have or could salvage, almost any part can be over-engineered or streamlined, and the results are almost disproportionately amazing.
Great project Norbert!