Fixed some bugs in v1.2.3 for Arduino Mega & Leonardo. Thanks to wiltwong and Markus Lange for testing!
Download here: https://github.com/lincomatic/Colorduino/downloads
I’ve had to do a lot of experimenting and tweaking in order to get decent prints out of my Printrbot (NOTE: Just to be clear, the Printrbot I built was not from a kit from Brook Drumm. I self sourced the parts, included the printed bits, which were given to me by a friend. You may or may not run into the all of the issues I had, but my tips below are generally applicable to Repraps of any kind, as well). Initially, my prints were wiggly unless I printed very slowly, at 15mm/sec. After tweaking, my prints at 30 mm/sec look better than they used to at 15 mm/sec, and now my 15 mm/sec prints look even better.
Below is one of my best prints before tweaking; note the squiggly lines, which are caused by vibration, and binding bearings on my y-axis: