I finished my build. Yay!
I got the firmware and and other software loaded, and my PC is talking to the board and the steppers. Since I'm just testing and calibrating I used Manual mode to jog the steppers and I noticed everything is reversed, except Y (I'm calling the front the side without the motor), extruder, Z-axis and X-axis are all backwards. I followed the wiring diagrams and made sure the red wires are all on the left (towards the power connectors), then blue, green and black.
Can I simply flip the wiring and the motors will run the direction I want? I'd try it on my own but I'm afraid I'll blow something up. Or is there a flip option in the firmware or host?
I'm running RAMPS 1.4 with Repetier Firmware (loaded with Arduino 1.0.3) and Host. No endstops, just using jumpers and set home to 0 for all axis.
Also, how do I define HOME in Repetier? I thought if I'm in manual mode if the axes say 0 that should be home.
Thanks,
Gyv