Some readers may recall building a line-following robot during their school days. Involving some IR LEDs, perhaps a bit of LEGO, and plenty of trial-and-error, it was fun on a tiny scale.

His latest project is a sophisticated line follower. You’ve probably seen “bang-bang” line followers that just use a photocell to turn the robot one way or the other.

Remember, we need two identical infrared sensor cards; one for left side, and other one for right side! → Part 24: ATmega8 Line Follower Robot (LFR) Project – Part 2/2 ← Part 22: Bootload an ATmega ...