Let's Make Robots!

NXT Line Follower

Smoothly follows a black line

The robot measures line position with the 4 line sensors and feeds this to a PD-regulator which in turn produces the two motor outputs. This setup gives a smooth line following.

The cost of the robot is roughly the cost of a set of MINDSTORMS NXT + 3 additional NXT light sensors and the rechargeable battery.

The time to build includes several mutations of the basic design - time flies when you play with LEGO ;-). Of course some time was spent finding some usable values for the P and D constants for the PD-regulation.

I used the Bricxcc IDE for developing the controller program.

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nice..
awsome robot it looks pretty kool. i like NXT aswell.
Welcome, JIPPI!!