const int pumpPin =  3;      // the number of the PUMP pin
const int pulseInput = 2;                // the number of the PULSE pin


// Variables will change:
int pumpState = LOW;             // pumpState used to set the PUMP
long startMillis = 0;        // will store last time PUMP was updated


// the follow variables is a long because the time, measured in miliseconds,
// will quickly become a bigger number than can be stored in an int.
long timer = 1000*60*10;           // timer of 10 minutes

void setup() {
  // set the digital pin as output:
  pinMode(pumpPin, OUTPUT); 
  digitalWrite(pumpPin, LOW);
  pinMode(pulseInput, INPUT);   
}

void loop()
{
 
  // Checking for the pulse
 if (digitalRead(pulseInput) == HIGH){
   if (pumpState == LOW)
      pumpState = HIGH;
    else
      pumpState = LOW;
 }
 
 // Update, update, update...
 unsigned long currentMillis = millis(); 
 
// Load startMillis
if (pumpState == HIGH & startMillis == 0)
startMillis = currentMillis;

// If PumpState HIGH and Timer less than 10 minutes
if (pumpState == HIGH & currentMillis - startMillis < timer){
   // Turn ON pump
   digitalWrite(pumpPin, HIGH);
 
}
  // Else turn OFF pump, reset startMillis and pumpState
 else {
   digitalWrite(pumpPin, LOW);
   startMillis = 0;
   pumpState = LOW;
 
 }
}