#define sensor 4
#define pump1  5
#define pump2  6
#define pump3  7

int state = 0;
byte com = 0; //reply from voice recognition
int f = 0;

void setup() {
  Serial.begin(9600);
  pinMode(pump1, OUTPUT);
  pinMode(pump2, OUTPUT);
  pinMode(pump3, OUTPUT);
  pinMode(sensor, INPUT);
  allPumpOFF();
  delay(2000);
  Serial.write(0xAA);
  Serial.write(0x37);//Switch to Compact Mode
  delay(1000);
  Serial.write(0xAA);
  Serial.write(0x21);//Import group 1 and be ready for voice instruction
}

void loop() {
  state = digitalRead(sensor);
//Serial.println(state);
//}

  if (f == 1 && state == 1) {
    allPumpON();
    delay(1000);
    //f = 0;
  }
  else{
    allPumpOFF();
    //delay(3000);
    f = 0;
  }
  while (Serial.available())
  {
    com = Serial.read();
    switch (com)
    {
      case 0x11:
        f = 1;
        break;
      case 0x12:
        f = 1;
        break;
      case 0x13:
        f = 1;
        break;
      case 0x14:
        f = 1;
        break;
      case 0x15:
        f = 1;
        break;
    }// end of SWITCH
  }

}// end of LOOP

void allPumpON() {
  digitalWrite(pump1, HIGH);
  digitalWrite(pump2, HIGH);
  digitalWrite(pump3, HIGH);
}

void allPumpOFF() {
  digitalWrite(pump1, LOW);
  digitalWrite(pump2, LOW);
  digitalWrite(pump3, LOW);
}