These four cases are the only possible conditions for a basic line follower robot. LFR-IR Sensor Card Circuit diagram Our LFR has two infrared sensor cards (left and right) on the bottom of the ...

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.

in which instructions from the microcontroller go into its input pins and the outputs are used to drive the robot motors. LFR-Microcontroller Unit (MCU) Circuit Diagram Here is the circuit of the ...