# = HCSR04 ultrasonic sensor Library for Arduino =

HCSR04 is an [Arduino](http://arduino.cc) library HCSR04 Sensors

![HC-SR04](HC_SR04.jpg)

## Documentation

Documentation for the library is on the
[Github Project Pages](https://github.com/gamegine/HCSR04-ultrasonic-sensor-lib)

[basic example](examples/HCSR04/HCSR04.ino)

![schéma HC_SR04_cabling](examples/HCSR04/HC_SR04_cabling.jpg)

```ino
#include <HCSR04.h>

HCSR04 hc(2, 3); //initialisation class HCSR04 (trig pin , echo pin)

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

void loop()
{
    Serial.println( hc.dist() ); //return current distance (cm) in serial
    delay(60);                   // we suggest to use over 60ms measurement cycle, in order to prevent trigger signal to the echo signal.
}
```

> if you want use a multiple sensor  
> ![schéma HC_SR04_multi_cabling](examples/HCSR04_multi/HC_SR04_cabling.png)

```ino
#include <HCSR04.h>

HCSR04 hc(2, new int[6]{5, 6, 7, 8, 9, 10}, 6); //initialisation class HCSR04 (trig pin , echo pin, number of sensor)

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

void loop()
{
    for (int i = 0; i < 6; i++ )
        Serial.println( hc.dist(i) ); //return curent distance (cm) in serial for sensor 1 to 6
    delay(60);                        // we suggest to use over 60ms measurement cycle, in order to prevent trigger signal to the echo signal.
}
```

## Download

The last version of the Library is available on the github
[HCSR04 Page](https://github.com/gamegine/HCSR04-ultrasonic-sensor-lib/releases)

## Install

The library can be installed using the [standard Arduino library install procedure](http://arduino.cc/en/Guide/Libraries)

## [License](https://github.com/gamegine/HCSR04-ultrasonic-sensor-lib/blob/master/LICENSE)

[MIT License](https://github.com/gamegine/HCSR04-ultrasonic-sensor-lib/blob/master/LICENSE)