int LedR = 5;
int LedG = 4;
int Eko = 2;
int niger = 3;
int distance;
long duration;
#include <LiquidCrystal.h>
LiquidCrystal lcd(1,6,7,8,9,10);


void setup(){
  pinMode(LedR, OUTPUT);
  pinMode(LedG, OUTPUT);
  pinMode(Eko, INPUT);
  pinMode(niger, OUTPUT);
  lcd.begin(16,2);
  lcd.setCursor (0,0);
  lcd.print("Kevin Messakh");
  delay(3000);
  lcd.clear();
  lcd.print("pengukur jarak");

}
void loop(){
   long duration, distance;
  
  digitalWrite(niger, LOW);
  delayMicroseconds(10);
  digitalWrite(niger, HIGH);
  delayMicroseconds(10);
  digitalWrite(niger, LOW);
  
  duration = pulseIn(Eko, HIGH);
  distance = duration*0.034/2.0;

 if (distance < 11){
 digitalWrite(LedR, HIGH);
 digitalWrite(LedG, LOW);
 }
 if (distance > 10){
 digitalWrite(LedR, LOW);
 digitalWrite(LedG, HIGH);
 }
}