two_relays

// constnts that won't change. They're used here to set pin numbers
const int button1 = 2;      // the number of the pushbutton pin
const int button2 = 3;      // the number of the pushbutton pin
const int relay1 = 11;     // the number of the relay1 pin
const int relay2 = 12;     // the number of the relay2 pin

// variables that will change
int buttonState1 = 1;       // variable for reading the pushbutton1 status
int buttonState2 = 1;       // variable for reading the pushbutton2 status

boolean button1_pressed = false; // This is a state flag for button1.
int relay1_onTime = 1000; // This is the time in milliseconds that relay1 will turn on.
unsigned long button1_previousTime = 0; // This is for saving the millis() time that the button was pressed.
unsigned long button1_currentTime = 0; // This is for saving a later time to compare to the above time.

boolean button2_pressed = false; // This is a state flag for button2.
int relay2_onTime = 5000; // This is the time in milliseconds that relay2 will turn on.
unsigned long button2_previousTime = 0;// This is for saving the millis() time that the button was pressed.
unsigned long button2_currentTime = 0;// This is for saving a later time to compare to the above time.

void setup()
{
  // initialize the relay pin as an output
  pinMode(relay1, OUTPUT);
  pinMode(relay2, OUTPUT);

  digitalWrite(relay1, HIGH);
  digitalWrite(relay2, HIGH);

  // initialize the pushbutton pin as an input
  pinMode(button1, INPUT_PULLUP);   // PULLUP for add 5v to pin without hardware prevent pin from floating between HIGH and LOW
  pinMode(button2, INPUT_PULLUP);   // PULLUP for add 5v to pin without hardware prevent pin from floating between HIGH and LOW
}

void loop()
{

  if (button1_pressed == false) {
    // This check is here to de-bounce the button input.
    // Also it only tests for the button press if the relay is turned [off].

    // read the state of the pushbutton value
    buttonState1 = digitalRead(button1);

    // check if the pushbutton is pressed. If it is, the buttonState is LOW.
    if (buttonState1 == LOW)
    {
      digitalWrite(relay1, LOW);      // pin 2 is pressed and connected to GND so it will be LOW
      //delay (1000);                   // remove 5v from pin 11 so relay in1 will be 0v and this will make relay on
      // wait 1 sec.
      button1_pressed = true;
      button1_previousTime = millis();
    }
    //else
    //{
    //digitalWrite(relay1, HIGH);     // add 5v to arduino pin 11 so relay in1 will be 5v and this will make the relay turn off.
    // turning off the relay is done further below
    //}
  }



  if (button2_pressed == false) {
    // This check is here to de-bounce the button input.
    // Also it only tests for the button press if the relay is turned [off].

    // read the state of the pushbutton value
    buttonState2 = digitalRead(button2);

    // check if the pushbutton is pressed
    // if it is, the buttonState is LOW
    if (buttonState2 == LOW)          // pin 3 is pressed and connected to GND so it will be LOW
    { // remove 5v from pin 12 so relay in2 will be 0v and this will make the relay turn on
      digitalWrite(relay2, LOW);      // and wait 5 seconds.
      //delay (5000);
      button2_pressed = true;
      button2_previousTime = millis();
    }
    //else
    //{
    //digitalWrite(relay2, HIGH);     // add 5v to arduino pin 12 so relay in2 will be 5v and this will make the relay turn off.
    // turning off the relay is done further below
    //}
  }


  if (button1_pressed == true) {
    button1_currentTime = millis();
    if (button1_currentTime >= button1_previousTime) {
      if (button1_currentTime >= (button1_previousTime + relay1_onTime)) {
        // This is now where the relay gets turned off, but only if it is on,
        // and has been on for at least (relay1_onTime) milliseconds.
        button1_pressed = false; // This turns off the state flag so you can press the button again.
        digitalWrite(relay1, HIGH); // This turns off the relay.
      }
    }
    else {
      button1_previousTime = millis();
      // this is millis() rollover protection, not likely to happen but a good habit.
    }
  }

  if (button2_pressed == true) {
    button2_currentTime = millis();
    if (button2_currentTime >= button2_previousTime) {
      if (button2_currentTime >= (button2_previousTime + relay2_onTime)) {
        // This is now where the relay gets turned off, but only if it is on,
        // and has been on for at least (relay2_onTime) milliseconds.
        button2_pressed = false;// This turns off the state flag so you can press the button again.
        digitalWrite(relay2, HIGH); // This turns off the relay.
      }
    }
    else {
      button2_previousTime = millis();
      // this is millis() rollover protection, not likely to happen but a good habit.
    }
  }

}