Axis reversed, weird

Hello. We have a 4 motor chassis with mecanum wheels. I programmed a strafe function on axis 4, and axis 3 is forward and backwards. I changed nothing at the code, but it reversed itself, and now when i try axis 3 it strafes and axis 4 makes it move forwards and backwards. Yesterday I tried calibrating the controller and it worked once. Today it was still reversed, tried everything from forcing it to reupload the firmware to resetting the brain. I searched on forums and no one seemed to have had this problem before. Any ideas?

It is likely a code issue. You should post your drive code. When you do, type three ` before the text to have it format correctly.

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or [code] code [/code] for the purpose, if you use BBCode.

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It sounds like your some of your motors may be reversed incorrectly, maybe check that?