Attiny858_washing_machine_peak_hours_start

Attiny858_washing_machine_peak_hours_start.ino

// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
// Relay on P1 that trigger washing machine start button
// Diagram : https://ae01.alicdn.com/kf/HTB11MlEa2Bj_uVjSZFpq6A0SXXaM.jpg

#include <TinyWireM.h>
#include "TinyRTClib.h"

RTC_DS1307 RTC;

void setup () {
  // RTC
  TinyWireM.begin();
  RTC.begin();
  
  // RELAY
  pinMode(1, OUTPUT);
  // set it off
  digitalWrite(1, HIGH);


//  // INIT RTC
//  if (! RTC.isrunning()) {
//    for (int i = 0; i > 3; i++) {
//      delay(100);
//      digitalWrite(1, LOW);
//      delay(100);
//      digitalWrite(1, HIGH);
//    }
//    // following line sets the RTC to the date & time this sketch was compiled
//    RTC.adjust(DateTime(__DATE__, __TIME__));
//  }
}

void loop () {
    // set relay off
    digitalWrite(1, HIGH);

    // get curent time
    DateTime now = RTC.now();

    // check if peak hour
    if (now.hour() == 2 && now.minute() == 35 && now.second() == 0) {
      // 2h35
      digitalWrite(1, LOW);
    } else if (now.hour() == 12 && now.minute() == 35 && now.second() == 0) {
      // 12h35
      digitalWrite(1, LOW);
    }
    
    // wait some time until next check
    delay(700);
}