Autonomous robot drive in straight line using GPS

[programmer28]

@jremington

Another approach is to use wheel encoders, and make sure that the encoders total up the same number of counts on each side of the robot, as it travels along.

The simplest approach with wheel encoders is PID steering, where the steering guide (PID INPUT) is the difference between encoder counts.

could I combine the GPS with the PID? and the coding of the PID need to add into the main coding to run the motor?