#define LED_BUILTIN A2
#define BUTTON A5
int buttinState = 0;
void setup() {
  // put your code here, to run once:
pinMode(BUTTON, INPUT);
pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
 buttinState=digitalRead(BUTTON);
 if(buttinState == 1){
digitalWrite(LED_BUILTIN, HIGH);
delay(500);
 }else
 {
digitalWrite(LED_BUILTIN, LOW);
delay(500);
 }


}