Distance indicator using Ultrasonic Sensor | Simple project

In this Blog, we will discuss a simple distance light alert using Arduino uno and ultrasonic sensor.

This project sense the distance of the object and display the measurement in your pc and the led indicate quickly and slowly like how far the object and how much near it.

let's learn to build it and modify it best project, this project gave you little idea of how digital measuring sensors work, checkout out below for the code, circuit diagram and how to build it.

Circuit Diagram :

Program Code:

int Time ;

int distance;

void setup()

{

pinMode(2,OUTPUT);

pinMode(3,INPUT);

pinMode(4,OUTPUT);

Serial.begin(9600);

}

void loop()

{

digitalWrite(2,HIGH);

delayMicroseconds(10);

digitalWrite(2,LOW);

delayMicroseconds(5);

digitalWrite(2,HIGH);

delayMicroseconds(10);

Time = pulseIn(3,HIGH);

distance= 0.0343*Time/2;

Serial.print("distane from sensor to object is =");

Serial.println(distance);

delay(5);

if(distance>1 && distance <=10 )

{

digitalWrite(4,HIGH);

delay(105);

digitalWrite(4,LOW);

delay(105);

}

if(distance>10 && distance <=15)

{

digitalWrite(4,HIGH);

delay(300);

digitalWrite(4,LOW);

delay(300);

}

if(distance>15 && distance <=20)

{

digitalWrite(4,HIGH);

delay(600);

digitalWrite(4,LOW);

delay(600);

}

if(distance>20 && distance <=25)

{

digitalWrite(4,HIGH);

delay(1000);

digitalWrite(4,LOW);

delay(1000);

}

if(distance>25 && distance <=30)

{

digitalWrite(4,HIGH);

delay(1500);

digitalWrite(4,LOW);

delay(1500);

}

if(distance>30)

{

digitalWrite(4,HIGH);

}

}

Here Is the Project working video :