Wait, is this required even when I'm manually controlling the robot? (movement commands set by code, lets say that when I press the forward button, it goes at 200 in analog) do the motors not go exactly the speed you set them to go
Imagine the lubrication on one wheel is slightly poorer than on the other, or the axle is binding slightly more, or the wiring to one motor is a bit thinner, or the soldering isn't quite up to scratch. . .