LCD1602i2c_Dreammy

Dreammy

#include <Wire.h>
#include <LiquidCrystal_I2C.h>

// Define the LCD object with its I2C address, columns, and rows
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Define the button pin
const int buttonPin = 8; // Connect your button to digital pin D8

// Setup function: runs once when the Arduino starts
void setup() {
  lcd.init();      // Initialize the LCD
  lcd.backlight(); // Turn on the backlight

  // Set the button pin as an input with an internal pull-up resistor
  // This means the pin will be HIGH by default, and LOW when the button is pressed
  pinMode(buttonPin, INPUT_PULLUP);

  lcd.print("Hola Diego"); // Display "Hola Diego"
  delay(2000);             // Keep it on for 2 seconds
  lcd.clear();             // Clear the screen
}

// Loop function: runs repeatedly after setup
void loop() {
  int buttonPressCount = 0; // Variable to count button presses
  bool lastButtonState = HIGH; // Track the previous state of the button (HIGH means not pressed)

  lcd.print("Presiona 2 veces"); // Prompt the user to press the button

  // Loop until two button presses are detected
  while (buttonPressCount < 2) {
    bool currentButtonState = digitalRead(buttonPin); // Read the current state of the button

    // Check for a state change from HIGH to LOW (button pressed)
    if (lastButtonState == HIGH && currentButtonState == LOW) {
      buttonPressCount++; // Increment the counter
      lcd.setCursor(0, 1); // Move cursor to the second line
      lcd.print("Conteo: "); // Display "Conteo: "
      lcd.print(buttonPressCount); // Display the current count
      delay(50); // Small debounce delay
    }
    lastButtonState = currentButtonState; // Update the last button state
  }

  // After two presses, clear the screen and display "Buenas noches"
  lcd.clear();
  lcd.print("Buenas noches");
  delay(5000); // Display "Buenas noches" for 5 seconds
  lcd.clear(); // Clear the screen before repeating the loop
  
  // The loop will then restart, prompting for two more presses.
}