Our LFR is fairly a good line follower robot, consists of low-priced electro-mechanical parts, electronic components, and a microcontroller chip-based processor circuitry. Bare essentials are listed ...

But robots don’t always have microcontrollers and software, as [Mati_DIY]’s zero programming analog line follower demonstrates.

Finally, put the batteries in and place your finished LFR in the track (with the line printed on it using black colour). Place the LFR over the line, and switch on the LFR to see the action! ← Part 23 ...

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.