#include <TM1637Display.h>

// Define the TM1637 display pins
#define CLK_PIN 4
#define DIO_PIN 5

TM1637Display displayTM1637(CLK_PIN, DIO_PIN);

const int sensorPin = 2;

volatile int objects = 0;
unsigned long previousMillis = 0;
int rpm = 0;

void setup() {
  // Initialize the TM1637 display
  displayTM1637.setBrightness(0x0F); // Set the brightness to maximum
  pinMode(sensorPin, INPUT_PULLUP); // Assuming your sensor is connected to pin 2
  attachInterrupt(digitalPinToInterrupt(sensorPin), count, FALLING);
  Serial.begin(9600);
}

void loop() {
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= 1000) {
    rpm = (objects / 1.0) * 60;
    objects = 0;
    previousMillis = currentMillis;
  }

  // Display the RPM value on the TM1637 display
  displayTM1637.showNumberDec(rpm);

  // You can also print the RPM to the Serial monitor if needed
  Serial.println("RPM: " + String(rpm));

  delay(100);
}

void count() {
  objects++;
}