How to program mecanum wheels with two joysticks

[Ether]

Originally Posted by wilsonmw04

We keep the same joystick position and the yaw rotation changes. It could be due to slight differences in the wheels or motor strengths.

Those are likely candidates. Three others might be 1) not all the rollers are spinning freely 2) the frame is so rigid that not all 4 wheels have sufficient normal force to prevent slipping 3) calibration and/or tolerance differences in the motor controllers