There’s hardly a day that passes without an Arduino ... line follower. You’ve probably seen “bang-bang” line followers that just use a photocell to turn the robot one way or the other.

The dual-channel motor controller is a simple H-Bridge driver chip L293D. Brain of the line follower robot is one Atmega8 microcontroller. LFR-Mechanical Assembly First of all attach motors, clamps ...

Some readers may recall building a line-following robot during their school days ... steering motor salvaged from a power wheelchair. An Arduino Mega Pro Mini handles the logic, sending PWM ...

The motor driver circuit here is based on a simple 16-pin IC (L293D) which can drive two dc motors independently ... go into its input pins and the outputs are used to drive the robot motors.