// Contoh Code Button dan LED 
int ledPin_1 = 15;        // Pin LED
int ledPin_2 = 4;
int pushButton_1 = 14;     // Pin Button
int pushButton_2 = 12;     // Pin Button
int state_btn_1 = 0;      // Status btn ( Boolean ) 
int state_btn_2 = 0;      // Status btn ( Boolean ) 


void setup() {
Serial.begin(115200);
pinMode(ledPin_1, OUTPUT);
pinMode(pushButton_1, INPUT);
pinMode(ledPin_2, OUTPUT);
pinMode(pushButton_2, INPUT);
}

void loop() {
state_btn_1 = digitalRead(pushButton_1);
state_btn_2 = digitalRead(pushButton_2);

if (state_btn_1 == HIGH && state_btn_2 == LOW){
  digitalWrite(ledPin_1, HIGH);
  Serial.println(" LED 1 MENYALA ");
}  
if ( state_btn_2 == HIGH && state_btn_1 == LOW){
  digitalWrite(ledPin_2, HIGH);
  Serial.println(" LED 2 MENYALA ");
} else {
  digitalWrite(ledPin_1, LOW);
  digitalWrite(ledPin_2, LOW);
  Serial.println(" SEMUA LED MATI ");
}
}