#include <Arduino.h>
#include <Ultrasonic.h>

const int TRIGGER_PIN = 5; // GPIO pin connected to the trigger pin of HC-SR04
const int ECHO_PIN = 18;    // GPIO pin connected to the echo pin of HC-SR04
const unsigned long MEASURE_INTERVAL = 100; // Measurement interval in milliseconds

Ultrasonic ultrasonic(TRIGGER_PIN, ECHO_PIN);

void setup() {
  Serial.begin(115200);
}

void loop() {
  // Measure distance
  float distance = ultrasonic.read();

  // Check if the distance is within the specified range (0 to 10cm)
  if (distance >= 0 && distance <= 10) {
    Serial.print("Distance: ");
    Serial.print(distance);
    Serial.println(" cm");
  }

  // Delay before next measurement
  delay(MEASURE_INTERVAL);
}