int ECHO_PIN = 2;
int TRIG_PIN = 3;
int led1 = 6;
int led2 = 5;
int led3 = 4;

void setup(){
 Serial.begin(9600);
 pinMode(ECHO_PIN,INPUT);
 pinMode(TRIG_PIN, OUTPUT);
 pinMode(led1,OUTPUT);
 pinMode(led2,OUTPUT);
 pinMode(led3,OUTPUT);
}

float ultrasonik(){
   digitalWrite(TRIG_PIN, LOW);
 delayMicroseconds(10);
 digitalWrite(TRIG_PIN,HIGH);
 int duration = pulseIn(ECHO_PIN, HIGH);
 return duration * 0.034 / 2;
}

void loop(){
 float val = ultrasonik ();
 if (val > 200) {
 digitalWrite(led1, HIGH);
 digitalWrite(led2,HIGH);
 digitalWrite(led3,LOW);
 Serial.println("Hi");
 Serial.println("Bye");
 delay(1000);
 }
}