Our team has been trying to build a basic clawbot, but our 2-motor Drivetrain can only move in one direction, regardless of which way the joystick is moved! Does anyone have any suggestions as to why this is happening? And yes, I checked the wires.
It is probably a programming issue. did you write your own driver code? if not I would do that. If you use Code Block then there are preset example of how to do the driver code and there are examples on how to set up button controls so you can set up your own code for the bot.
I have suffered some things like this but its kind of hard to tell without seeing you code. The only thing I can think of is that you have your code only set to move your motors in 1 direction. If you post the code I can try to help you.