#define BUZZER_PIN  19
#define SENSOR_PIN  18
#define VISUAL_PIN  5

#include <Ticker.h>
Ticker ticker;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(VISUAL_PIN, OUTPUT);
  pinMode(BUZZER_PIN,OUTPUT);
  pinMode(SENSOR_PIN,INPUT);

  ticker.attach(2, timerCallBack);
}

void loop() {

  if(digitalRead(SENSOR_PIN))
  {
    digitalWrite(VISUAL_PIN, HIGH);
  }
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
}


void timerCallBack(void)
{
  
}