Best line following algorithm?

This brings back memories of the robotics club in high school. Unfortunately, I was the engineer and not the programmer. :[

Umm, you might want to look at this. It seems like a simple explanation of line following for robots.

@nxknxk Thanks anyway.

I have already looked at the first example in the link you gave me. Unfortunately it does not work as I want to follow the line in two directions, whereas that algorithm only allows you to follow lines that curve in one direction.

@haegenschlatt You need 3 sensors for that, as you can see from the link above in @nxknxk ‘s note. If you want to be fast, with minimal overshoot and undershoot, you need 5 sensors.

You might be able to have the 1-sensor robot follow a serpentine path and rewrite the algorithm so that ‘right’ and ‘left’ have some meaning for even the single sensor. It would be a physically slow robot but ‘surefooted’ <g>.

Doesn’t Lego mindstirms have a very simple drag and drop interface? Not sure if it was changed.