Robotics Projects
Line Follower Robot
A robot that follows a black line on the floor using an 8-sensor bar.
Overview
Eight reflectance sensors read the line position. The controller steers with proportional corrections, so the car follows curves instead of zig-zagging.
Build Steps
Assemble the chassis
Mount motors, wheels and battery holder, and fix the sensor bar at the front about 5 mm above the floor.
Wire the driver and sensors
Motors to the L298N with a shared battery supply, sensor bar outputs to digital pins.
Calibrate on the track
Slide the robot over line and floor to record min and max values for each sensor.
Write the correction
Weight the sensor positions into one error value and steer proportionally: on-line straight, off-line turn toward it.