/*
 3 colour led, buzer and override button
 FILTRATION TIMER MODULE V1.0
 evanshead@hotmail.com

 the override button is always active and engages the pump also showing the blue
 led when pressed. the timer starts with the pump on for 20 secs then a delay
 of 3 mins for the filtrate to clear from the pouring bowl then engages again
 in a continuous loop.

 */


// Pin 7 has RELAY PUMP 1 connected
// Pin 6 has LED 1 RED colour connected
// Pin 5 has LED 2 colour connected
// Pin 4 has LED 3 colour connected
// Pin 3 has BEEPER connected
// Pin 2 has OVERRIDE BUTTON connected


int relay1 = 7;
int ledRED = 6;
int ledBLU = 5;
int ledGRN = 4;
int beeper1 = 3;
const int button1 = 2;


void setup() {

  pinMode(beeper1, OUTPUT);
  pinMode(ledRED, OUTPUT);
  pinMode(ledGRN, OUTPUT);
  pinMode(ledBLU, OUTPUT);
  pinMode(relay1, OUTPUT);
  pinMode(button1, INPUT);

  digitalWrite(beeper1, LOW);
  digitalWrite(ledRED, LOW);
  digitalWrite(ledGRN, LOW);
  digitalWrite(ledBLU, LOW);
  digitalWrite(relay1, LOW);

}


void loop() {

  if (digitalRead(button1) == HIGH) {
    override();


    digitalWrite(relay1, LOW);   // DISENGAGE PUMP 1 from override loop
    digitalWrite(beeper1, HIGH);
    delay(600);
    digitalWrite(beeper1, LOW);
    delay(200);
    digitalWrite(beeper1, HIGH);
    delay(300);
    digitalWrite(beeper1, LOW);
    delay(200);
    digitalWrite(beeper1, HIGH);
    delay(100);
    digitalWrite(beeper1, LOW);

    digitalWrite(ledRED, HIGH);   // turn the ledRED on

    digitalWrite(relay1, HIGH);   // ENGAGE PUMP 1

    delay(20000);               // wait for 20 seconds
    digitalWrite(ledRED, LOW);  // ledRED off
    digitalWrite(ledGRN, HIGH); // ledGRN on
    digitalWrite(ledBLU, LOW);  // ledBLU off
    digitalWrite(relay1, LOW);  // DISENGAGE PUMP 1


    delay(180000);              // wait for 3 mins
    digitalWrite(ledGRN, LOW);  // ledGRN off
    digitalWrite(ledBLU, LOW);  // ledBLU off

  }

}

void override() {

  digitalWrite(ledGRN, LOW);
  digitalWrite(ledRED, LOW);
  digitalWrite(ledBLU, HIGH);   // show override is working
  digitalWrite(relay1, HIGH);   // ENGAGE PUMP 1

}