CPP

Arduino Counting without Millis

/*
	A simple program designed to count in seconds without using the Millis function
	
    The program displays this timer on an I2C LCD screen
    
    Last modified - 01/06/2022
    by Plasma
	*/
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 20, 4); // 20 x 4 I2C LCD screen

LiquidCrystal_I2C lcd(0x27, 16, 2); // 16 x 2 I2C LCD screen

signed short hours, minutes, seconds;
char Total_Time[16];

void setup() {

  lcd.init();
  lcd.backlight();
  lcd.clear();
}

void loop() {
  lcd.setCursor(0,0);
  sprintf(Total_Time, "%0.2d:%0.2d:%0.2d", hours, minutes, seconds);
  lcd.print(Total_Time);

  lcd.setCursor(0,2);
  lcd.print("Your Name");
  
  delay(1000);
  seconds++;
  
  if (seconds == 60) {	// When seconds = 60
    seconds = 0; 	    // Seconds become 0
    minutes ++;			// Adds 1 minute
  }
  if (minutes == 60) {	// When minutes = 60
    minutes = 0;		// Minutes become 0
    hours ++;			// Adds 1 hour
  }
}