Pololu Digital Distance Sensor (5 cm)

/*
Here's a simple code example for Arduino that reads the distance value and prints it to the Serial Monitor:

To use the code, simply connect the sensor's output to the digital pin 2 on your Arduino board, and upload the code using the Arduino IDE. Open the Serial Monitor to see the distance readings.

Remember to connect the sensor's VCC to the 5V pin on the Arduino and the GND to the GND pin on the Arduino.
*/

const int sensorPin = 2; // Connect the sensor's output to digital pin 2 on the Arduino

void setup() {
  pinMode(sensorPin, INPUT); // Set the sensorPin as input
  Serial.begin(9600); // Start the Serial Monitor with a baud rate of 9600
}

void loop() {
  int distance = digitalRead(sensorPin); // Read the sensor's output

  if (distance == HIGH) { // If the output is HIGH, the distance is less than 5 cm
    Serial.println("Distance is less than 5 cm");
  } else { // If the output is LOW, the distance is greater than or equal to 5 cm
    Serial.println("Distance is greater than or equal to 5 cm");
  }

  delay(1000); // Wait for 1 second (1000 milliseconds) before reading the sensor again
}