#include <TM1637Display.h>
// seven segment
int DIO =  7;
int CLK = 8;
TM1637Display display(CLK,DIO);

//Ultrasonic
#define trig 9
#define echo 10
long durasi,jarak;

//Relay
#define relay 11

void setup() {
  pinMode(trig,OUTPUT);
  pinMode(echo,INPUT);
  pinMode(relay,OUTPUT);
  digitalWrite(relay,LOW);
  display.setBrightness(0x0f);
}

void loop() {
digitalWrite(trig,LOW);
delayMicroseconds(2);
digitalWrite(trig,HIGH);
delayMicroseconds(10);
digitalWrite(trig,LOW);

durasi = pulseIn(echo,HIGH);
jarak = (durasi / 2 ) / 29.1;

//Menampilkan jarak pad seven segmen
display.showNumberDec(jarak,false);

//kontrol relay
if(jarak > 15){
  digitalWrite(relay,HIGH);
}else{
  digitalWrite(relay,LOW);
}


}