Reversed direction on steppers

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

Suppliers love to change the colours of wires on the motors.

While you can flip them, you can invert them in the firmware.

Look in Configuration.h - I think it starts with "INVERT_" and ends in "_AXIS" but I can't be sure (going by memory).

eg: INVERT_X_AXIS

It will be either true or false. Change it to the opposite of what it is to invert it from it's current setting.

eg: Change from "false" to "true", or from "true" to "false".

Hope this helps.