Ultrasonic Sensor With Arduino Uno

Yeah, Ultrasonic sensor now its working. Today i am gonna to share the code of how its work:)

It quite easy. We just need to connect 4-pin which is VCC,GND,ECHO and TRG from Ultrasonic sensor to Arduino. Done:)

Code :

int trigger_pin = 4;

int echo_pin = 2;

int LED_pin = 13;

int time;

int distance;

void setup ( ) {

        Serial.begin (9600);

        pinMode (trigger_pin, OUTPUT);

        pinMode (echo_pin, INPUT);

        pinMode (LED_pin, OUTPUT);

}

void loop ( ) {

    digitalWrite (trigger_pin, HIGH);

    delayMicroseconds (10);

    digitalWrite (trigger_pin, LOW);

    time = pulseIn (echo_pin, HIGH);

    distance = (time * 0.034) / 2;

  if (distance <= 10)

        {

        Serial.println (" Object Detect ");

        Serial.print (" Distance= ");             

        Serial.println (distance);       

        digitalWrite (LED_pin, HIGH);

        delay (500);

        }

  else {

        Serial.println (" No obstacle ");

        Serial.print (" Distance= ");             

        Serial.println (distance);       

        digitalWrite (LED_pin, LOW);

        delay (500);       

  }

  }

Practical: