Only moving in the positive direction?

I just uploaded sprinter to the arduino and I'm trying to jog the motors using pronterface. They are only moving in the positive direction. I can see the light on the arduino flash so the command is being sent. Looks like my sodering skills bad. I guess I'll check all the connections. If its both X and Y wheres the best place to look on ramps 1.4.

Edited 1 time(s). Last edit at 03/18/2013 02:59AM by Pierson.

Check it isn't refusing to move one way because it thinks the endstop is triggered.

Good call. I though for sure it was my shotty sodering.