countdown need push button

Projects Programming
27

PaulS:
I don't know if this is clear, or not: POST YOUR CURRENT CODE. ALL OF IT.

If not, I can post more. But, don't make me do that.

OK

 #include <LiquidCrystal.h>

LiquidCrystal lcd(8, 9, 10, 11, 12, 13);
int sw = 3;
int led1 =  7;
int ledState1 = HIGH;

unsigned long previousMillis1 = 0;
long OnTime1 =  600000  ;
long OffTime1 = 3600000;
long secondd ;
long secondd1 = 60;
int allmint1 ;
int mint1 ;
int hours1 ;

void setup() {
  Serial.begin(9600);
  lcd.begin(20, 4);
  pinMode(led1, OUTPUT);
  lcd.setCursor(1, 0);
  lcd.print("H :M :S");
  pinMode(sw, INPUT_PULLUP);
}

void loop() {

  unsigned long currentMillis = millis();

    if (ledState1 == HIGH) 
    
    digitalWrite(led1, ledState1);

    if ((ledState1 == HIGH) && (currentMillis - previousMillis1 >= OnTime1))
    {
      ledState1 = LOW; 
      
      previousMillis1 = currentMillis;
      
      digitalWrite(led1, ledState1);
    }
    
    else if ((ledState1 == LOW) && (currentMillis - previousMillis1 >= OffTime1))
    {
      ledState1 = HIGH; previousMillis1 = currentMillis;
      
      digitalWrite(led1, ledState1);
    }
    /////

    if (currentMillis - secondd == 1000) {
      secondd = currentMillis;
    }

    if ((secondd1 == 0)) {
      secondd1 = 60;
    }
    else if (currentMillis - secondd == 0) {
      secondd1--;

      lcd.setCursor(1, 1); lcd.print("  :");
      lcd.setCursor(1, 1); lcd.print(hours1);
      lcd.setCursor(4, 1);
      lcd.print("  :");
      lcd.setCursor(4, 1);
      lcd.print(mint1);
      lcd.setCursor(7, 1);
      lcd.print("  :");
      lcd.setCursor(7, 1);
      lcd.print(secondd1);

      if ((ledState1 == HIGH)) {
        lcd.setCursor(14, 1);
        lcd.print("    ");
        lcd.setCursor(10, 1);
        lcd.print(" FAN   ON ");
      }

      else if ((ledState1 == LOW)) {
        lcd.setCursor(14, 1);
        lcd.print("     ");
        lcd.setCursor(10, 1);
        lcd.print(" FAN   OFF");
      }

      if (currentMillis == 1000 && ledState1 == HIGH) {
        allmint1 = (OnTime1 / 60 / 1000) - 1;
      }

      else if ((currentMillis - previousMillis1 == 0 && ledState1 == HIGH)) {
        allmint1 = (OnTime1 / 60 / 1000) - 1;
      }

      else if ((currentMillis - previousMillis1 == 0 && ledState1 == LOW)) {
        allmint1 = (OffTime1 / 60 / 1000) - 1;
      }

      else if ((currentMillis - secondd == 0 && secondd1 == 0)) {
        allmint1--;
      }
      hours1 = allmint1 / 60;

      if ((hours1 < 1)) {
        mint1 = allmint1;
      }

      else if ((hours1 >= 1)) {
        mint1 = allmint1 - (hours1 * 60);
      }
    }
  }

in this code i have countdown for ontime and of time of the fan
I want to increase and decrease ontime and of time using switches (this is not here in this code but i need your help to add this to my code) and your help to use EEPROM in this code