Ok my question is simple. I am currently undertaking a project where I make a robot move a set path based on distance and angle. So this requires the robot moving a certain distance and then turning a specified angle and moving another distance, etc. I am using a gyroscope and wheel encoders to accomplish this part of it. but now what I noticed is that the robot doesnt move straight, especially after making the angled turns as this rotates the rear castor wheel and causes the robot to move in a curved path. The pic of the robot chassis im using is shown below:
My question is this. would using a 4 wheeled chassis give better control in the robot moving straight? or a tank chassis such as this one shown below. Or will they make no difference at all?