Once again Xun and David in this fourth video tutorial on the Arduino Robot released by RS Components, are exploring one of the most used techniques in Robotics: following a line, just like factory robots do to get an orientation when they carry objects from one place to another without human intervention.

Watching the video you’ll learn how to create a racing track drawing a black line over a white surface and understand how the different sensors read data that will be used to feed a PD algorithm:

PD stands for Predictive-Derivative and it is used to make a decision on how centred the robot is on top of the line. Ideally, for the robot to follow a line, the central IR sensor needs to be straight on top of the track and the algorithm needs to be “clever” enough to steer the motors towards it.

Check it out:

Click and watch more video tutorials about the Arduino Robot.