Long story, but I inherited a friend's old experimental Replicator project (version 1, balsa frame), which included a bunch of Makerbot EC3 extruder controllers.
After scrounging around the net for old documentation, I found a few threads suggesting these things can be reprogrammed. I'm on a budget, and the ability to control high-current applications straight from an Arduino interface would be pretty neat. Once firmware exists, there's a procedure to flash it, but I'm interested in something a little more straightforward. Someone in the forums said that these can be programmed from the Arduino IDE (as the boards are Arduino derivatives), but I haven't found any official documentation on the subject.
(1) Does anyone know if it's possible to reprogram these straight from the Arduino IDE?
(2) Is there a known conversion between board pins and extruder controller pins?
Links I found: