This library provides an easy-to-use interface for controlling Ultrasonic (HC-SR04) sensor.

1. Download this repository as ZIP.
2. Open the Arduino IDE.
3. Go to Sketch → Include Library → Add .ZIP Library....
4. Select the downloaded ZIP file and click Open.
5. The library is now installed.

1. Include the library into your project via Arduino IDE Sketch → Include Library → Ultrasonic or just add the following line in your code:

#include <Ultrasonic.h>

2. Then create an instance of the Ultrasonic:

Ultrasonic ultrasonic(trigger_pin, echo_pin);

Go to File → Examples → Ultrasonic → Ultrasonic

#include "Ultrasonic.h"

#define trigger_pin 5
#define echo_pin 18

Ultrasonic ultrasonic(trigger_pin, echo_pin);

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

void loop() {
  Serial.print("Distance (cm): ");
  Serial.println(ultrasonic.measureCentimeters());
  delay(1000);
}

This project is licensed under the MIT license.