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Re:Show HN: Robot that copies artist's exact strokes to repl... by salgernon on Monday August 24, 2015 @05:15PM (#10112973)
It doesn't do pressure, but this is along the same lines:

http://shop.evilmadscientist.com/productsmenu/605

And if you've got an old serial plotter (or 3 or 7) that can emulate or do HPGL:

http://music.columbia.edu/cmc/chiplotle/

There's something absolutely magical about plotters...

Re:Show HN: Robot that copies artist's exact strokes to repl... by joshu on Monday August 24, 2015 @08:06PM (#10113597)
The watercolor bot can do pressure.