arduino with ultra sonic and RGB led in tamil

codings for this video

#define trig 8

#define echo 9

int red = 10, green = 11,blue = 12;

void setup() {

  Serial.begin(9600);

  pinMode(trig,OUTPUT);

  pinMode(echo,INPUT);

  pinMode(red,OUTPUT);

  pinMode(blue,OUTPUT);

  pinMode(green,OUTPUT);

}

void loop() {

  long duration , distance;

  

  digitalWrite(trig,LOW);

  delay(2);

  digitalWrite(trig,HIGH);

  delay(2);

  digitalWrite(trig,LOW);

  

  duration= pulseIn(echo,HIGH);

  distance=(duration/2)/29.1;

  Serial.println(distance);

  if(distance <= 10)

  {

    digitalWrite(red,LOW);

    digitalWrite(blue,LOW);

    digitalWrite(green,HIGH);

  }

  else if(distance <= 15)

  {

    digitalWrite(red,LOW);

    digitalWrite(blue,HIGH);

    digitalWrite(green,LOW);

  }

  else if(distance <= 20)

  {

    digitalWrite(red,HIGH);

    digitalWrite(blue,LOW);

    digitalWrite(green,LOW); 

  }

  else

  {

    digitalWrite(red,LOW);

    digitalWrite(blue,LOW);

    digitalWrite(green,LOW); 

  }

  

 delay(100);

  

}

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copy this codings and upload that in arduino IDE directly.

connect all wires like coding.