InloveTech

Ultrasonic Measuring Device:

(for information on this sensor, click

Things needed:-

1) Arduino

2) Ultrasonic Sensor(in this project HC SR04 model is used)

Connections:-

There are 4 pins on this Ultrasonic sensor.

Connect VCC to arduino 5V

GND to arduino GND

ECHO to arduino pin 12

TRIGGER to arduino pin 13

[Note:- These sensor pins arrangement is for HC SR04 model. The pins may vary for some models.]

Coding:-

HC-SR04 Ping distance sensor]

VCC to arduino 5v GND to arduino GND

Echo to Arduino pin 13 Trig to Arduino pin 12

More info at: http://inlovetech.ucoz.com

#define trigPin 13

#define echoPin 12

void setup() {

Serial.begin (9600);

pinMode(trigPin, OUTPUT);

pinMode(echoPin, INPUT);

}

void loop() {

long duration, distance;

digitalWrite(trigPin, LOW); // Added this line

delayMicroseconds(2); // Added this line

digitalWrite(trigPin, HIGH);

// delayMicroseconds(1000); - Removed this line

delayMicroseconds(10); // Added this line

digitalWrite(trigPin, LOW);

duration = pulseIn(echoPin, HIGH);

distance = (duration/2) / 29.1;

if (distance >= 200 || distance <= 0){

Serial.println("Out of range");

}

else {

Serial.print(distance);

Serial.println(" cm");

}

delay(500);

}

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