#define TRIG 9
#define ECHO 10
#define RED 11
#define GREEN 12
#define BLUE 13

double eshkere;
int dist;


void setup() {

pinMode(TRIG, OUTPUT);
pinMode(ECHO, INPUT);
pinMode(RED, OUTPUT);
pinMode(GREEN, OUTPUT);
pinMode(BLUE, OUTPUT);
Serial.begin(9600);
}

void loop() {
digitalWrite(TRIG, LOW);
  delayMicroseconds(5);
  digitalWrite(TRIG, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG, LOW);

    
  eshkere = pulseIn(ECHO, HIGH);
  dist = (eshkere / 2) / 29.1; 
  if(dist<100){

  setColor(255,0,0);}
  else if(dist<300){
    setColor(0,255,0);
  }else{
    setColor(0,0,255);
  }
  }
  
void setColor(int r, int g, int b){
  analogWrite(RED,r);
  analogWrite(GREEN,g);
  analogWrite(BLUE,b);

}