const int PB_on = 3; 
const int PB_off = 5; 
const int LED = 12; 
 

void setup() { 
  // put your setup code here, to run once: 
pinMode(PB_on, INPUT); 
pinMode(PB_off, INPUT); 
pinMode(LED, OUTPUT); 
} 
 
void loop() { 
  // put your main code here, to run repeatedly: 
  int val1 = digitalRead(PB_on);  //LAMPU HIJAU ON 
  int val2 = digitalRead(PB_off);  //LAMPU KUNING OFF 
 
  if(val1 == HIGH){ 
    digitalWrite(LED, HIGH); 
    while(val1 == HIGH){ 
      int val1 = digitalRead(PB_on); 
      int val2 = digitalRead(PB_off); 
      if(val2 == HIGH){ 
        digitalWrite(LED, LOW); 
        break; 
      } 
    } }}