#define RED 19
#define GREEN 18
int BTN = 0;
int SAVE = 0;
void setup() {
  Serial.begin(115200);
  pinMode(RED, OUTPUT);
  pinMode(GREEN, OUTPUT);
  pinMode(BTN, INPUT);
}
void loop() {
  SAVE = digitalRead(BTN);
  if(SAVE == 1){
    Serial.println("Bernilai 1");
    digitalWrite(RED, HIGH);
    digitalWrite(RED, LOW);
    delay(300);
  }else{
    Serial.println("Bernilai 0");
    digitalWrite(GREEN, HIGH);
    digitalWrite(GREEN, LOW);
    delay(300);
  }
}