step/dir firmware for the polargraph kritzlerbot
Description
I like the polargraph controller http://polargraph.co.uk but its current choice of electronics somewhat limits the choice and size of stepper motors one can use. I went with stepstick drivers with 1/16 microstepping and modded the polargraph firmware to work with step/direction drivers. Note: my printed files are here: http://www.thingiverse.com/thing:16692
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