Skip to content

Ultrasonic distance sensor with Arduino and HC-SR04 (Arduino + HC-SR04)

Published by Matheus (X-warrior) Bratfisch on October 20, 2012

Good night,

Going on with my adventures with Arduino and sensors, today I decided to play with Ultrasonic sensor HC-SR04 to measure distance.

HC-SR04 is pretty easy to work with, it has 4 pins, VCC to energy, Trig to start a measurement, Echo to get the distance, and GND to ground.

It has a library to get it working, it is called Ultrasonic. The only problem that I had was the Library is out of date, it still uses WProgram.h but Arduino 1.0.1 uses Arduino.h, so I updated it. (You can get on the end of the post).

The library must be included on your dir “arduino-1.0.1/libraries” and you must restart your IDE.

Sensor VCC connects to Arduino +5V pin
Sensor Trig connects to Arduino PIN 12
Sensor Echo connects to Arduino PIN 13
Sensor GND connnects to Arduino GND PIN

You can configure it on trig and echo variables.

[code lang=”c”]
#include “Ultrasonic.h”
int trig = 12;
int echo = 13;
Ultrasonic ultrasonic(trig,echo);

void setup() {
Serial.begin(9600);
}

void loop()
{
Serial.print(“Distance CM:”);
Serial.println(ultrasonic.Ranging(CM));
Serial.print(“Distance INC:”);
Serial.println(ultrasonic.Ranging(INC));
delay(100);
}
[/code]

Referências:
HC-SR04 DataSheet
Biblioteca Ultrasonic atualizada para Arduino 1.0.1

Published inAndroid

1,377 Comments

  21. GichardDulge GichardDulge

    Excellent post. Keep writing such kind of info on your blog. Im really impressed by it.
    Hey there, You’ve performed a great job. I will definitely digg it and personally suggest to my friends. I am confident they will be benefited from this web site.
    https://share.google/LHjfavYeMlpUwJQOh

    # April 21, 2026
  22. zarbetDoIt zarbetDoIt

    https://zarbet-casino.co.za/
    The Zarbet platform serves as a up-to-date internet casino along with betting platform developed especially for players based in South Africa, that carries out its activity in a fully authorised manner and delivers a well-rounded journey both from the mobile phone as well as from the desktop.

    # April 21, 2026
  24. betmasterDoIt betmasterDoIt

    https://betmaster-bet.com.mx/
    La plataforma Betmaster constituye un actual portal de juego virtual junto con operador de apuestas disenado exclusivamente para el publico mexicano, que se maneja con licencia oficial y ofrece un recorrido completo tanto a traves del telefono inteligente como por medio de la computadora.

    # April 21, 2026
  38. betsheziDoIt betsheziDoIt

    https://bet-shezi.co.za/
    Bet Shezi comes across as a innovative internet casino together with sportsbook built uniquely for players based in South Africa, which runs under an official licence and provides a well-rounded journey both via the cellphone as well as from the desktop.

    # April 22, 2026
  39. spacemanDoIt spacemanDoIt

    https://spaceman-game.co.za/
    Spaceman comes across as a innovative online casino along with betting platform created specifically for players based in South Africa, which operates with a valid permit in place and delivers a well-rounded journey both via the cellphone as well as from the computer.

    # April 23, 2026
  42. gbetsDoIt gbetsDoIt

    https://gbets-casino.co.za/
    The Gbets platform stands as a up-to-date online casino together with betting platform created specifically for players based in South Africa, that carries out its activity under an official licence and makes available a well-rounded journey both from the mobile phone as well as through the laptop.

    # April 23, 2026
  46. sportingbetDoIt sportingbetDoIt

    https://sportingbet-play.co.za/
    Sportingbet is a up-to-date digital gambling site and sportsbook developed especially for players based in South Africa, that functions in a fully authorised manner and delivers a well-rounded journey both from the mobile phone as well as through the laptop.

    # April 23, 2026
  47. playabetsDoIt playabetsDoIt

    https://playa-bets.co.za/
    The Playa Bets platform stands as a up-to-date internet casino as well as sports betting hub created specifically for the audience in South Africa, which operates legally and delivers an all-round proposition whether through a smartphone as well as from the PC.

    # April 24, 2026

Leave a Reply

Your email address will not be published. Required fields are marked *