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const int leftSensorPin = A0;
const int rightSensorPin = A1;
const int leftMotorForwardPin = 8;
const int leftMotorBackwardPin = 9;
const int rightMotorForwardPin = 10;
const int rightMotorBackwardPin = 11;
void setup() {
pinMode(leftMotorForwardPin, OUTPUT);
pinMode(leftMotorBackwardPin, OUTPUT);
pinMode(rightMotorForwardPin, OUTPUT);
pinMode(rightMotorBackwardPin, OUTPUT);
Serial.begin(9600);
}
void loop() {
int leftSensorValue = analogRead(leftSensorPin);
int rightSensorValue = analogRead(rightSensorPin);
Serial.print("Left: ");
Serial.print(leftSensorValue);
Serial.print(", Right: ");
Serial.println(rightSensorValue);
// Adjust these thresholds based on your sensor readings
int threshold = 500;
if (leftSensorValue > threshold && rightSensorValue > threshold) {
// Both sensors on the line, move forward
digitalWrite(leftMotorForwardPin, HIGH);
digitalWrite(leftMotorBackwardPin, LOW);
digitalWrite(rightMotorForwardPin, HIGH);
digitalWrite(rightMotorBackwardPin, LOW);
} else if (leftSensorValue > threshold) {
// Left sensor on the line, turn right
digitalWrite(leftMotorForwardPin, LOW);
digitalWrite(leftMotorBackwardPin, LOW);
digitalWrite(rightMotorForwardPin, HIGH);
digitalWrite(rightMotorBackwardPin, LOW);
} else if (rightSensorValue > threshold) {
// Right sensor on the line, turn left
digitalWrite(leftMotorForwardPin, HIGH);
digitalWrite(leftMotorBackwardPin, LOW);
digitalWrite(rightMotorForwardPin, LOW);
digitalWrite(rightMotorBackwardPin, LOW);
} else {
// No sensor on the line, stop
digitalWrite(leftMotorForwardPin, LOW);
digitalWrite(leftMotorBackwardPin, LOW);
digitalWrite(rightMotorForwardPin, LOW);
digitalWrite(rightMotorBackwardPin, LOW);
}
delay(10);
}
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