/* Line Follower Robot Uses 2 IR Sensors & L298N Driver Author: Study For Next */ // Sensor Pins #define LEFT_S 2 #define RIGHT_S 3 // Motor Pins #define LM1 4 #define LM2 5 #define RM1 6 #define RM2 7 void setup() { pinMode(LEFT_S, INPUT); pinMode(RIGHT_S, INPUT); pinMode(LM1, OUTPUT); pinMode(LM2, OUTPUT); pinMode(RM1, OUTPUT); pinMode(RM2, OUTPUT); } void loop() { int l = digitalRead(LEFT_S); int r = digitalRead(RIGHT_S); if (l == 0 && r == 0) { // Both on White -> Forward moveForward(); } else if (l == 1 && r == 0) { // Left on Black -> Turn Left turnLeft(); } else if (l == 0 && r == 1) { // Right on Black -> Turn Right turnRight(); } else { // Both on Black -> Stop stopBot(); } } // Note: IR sensor returns 1 for Black, 0 for White (adjustable)