Stepstruder Mk7 adaptation to Cupcake CNC
by juanpablocanguro, published
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You just use the correct sensor depending on which extruder controller your have. So gen3 is a thermistor, gen4 would be a thermocouple. You aren't changing the heater, just where you get the motor signal from. The problem always has been that all motion should come from the same processor, and the extruder controller should just control the temperature and that's it. If you add the latency of the serial coms between the boards, plus the internal firmware of the extruder controller to run the motor, then you will aways have uneven starts and stops of extrusion and thus flaws in the print.
I recommend getting 5d3g board from maker but instead of getting the cable hack. http://store.makerbot.com/3g-5... ~$25
Generally its better looking and safer then the cable hack.
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