#include <LiquidCrystal_I2C.h>

// Constants for PIR sensor and display pins
const int pirPin = 4;
const int displayClkPin = 3;
const int displayDioPin = 2;

// Initialize the TM1637 display
LiquidCrystal_I2C lcd(0x27, 16, 2);
long counter = 0; // Use a long data type for an 8-digit counter

void setup() {
  pinMode(pirPin, INPUT);
  lcd.init();
  lcd.backlight();
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("IR count: ");
    Serial.println(counter);
    char buffer[9]; // Buffer to store the formatted count (8 digits + null terminator)
    lcd.setCursor(8, 1); // Move the cursor to the 2nd line
    lcd.print(buffer); // Print the formatted count

  Serial.begin(9600);
}

void loop() {
  int motionValue = digitalRead(pirPin);
  if (motionValue == HIGH) {
    counter++; // Increment the motion count
    Serial.print("Motion Detected! Counter is at: ");
    Serial.println(counter);
    char buffer[9]; // Buffer to store the formatted count (8 digits + null terminator)
    sprintf(buffer, "%08ld", counter); // Format with leading zeros
    lcd.setCursor(8, 1); // Move the cursor to the 2nd line
    lcd.print(buffer); // Print the formatted count
  }
}