Hi, I connected to ramp 1.4 boards, to one arduino mege 2560 board. I have not been able to get the stepper motors to work, at first they did work, but when I came home from work today and tired it again it did not work, everything else works. The just make a loud screeching noise, and some times it jerks a little. I don't know much about the wiring on the boards, I though one of you guys might know more. I did have to connect a thermostat to each ramps board to get it to work, with just one it gives a mintemp error.
