#define Button1State 1
#define Button2State 2
#define Button3State 3
#define Button4State 4
#define Button5State 5

int startup_delay = 500;
int UpTime = 250;
int DownTime = 250;

// setup function runs once after reset button pressed or powered on
void setup() {
  pinMode(PB0, OUTPUT);
  pinMode(PB1, INPUT_PULLUP);
  pinMode(PB2, INPUT_PULLUP);
  pinMode(PB3, INPUT_PULLUP);
  pinMode(PB4, INPUT_PULLUP);
  pinMode(PB5, INPUT_PULLUP);
  delay(startup_delay);//wait some time
}

//loop function runs over and over forever
void loop() {
     digitalWrite(PB0, LOW); //turn pump signal on
   if (digitalRead (Button1State)) {
    digitalWrite(PB0, HIGH);
    delay(UpTime);}
   else if (digitalRead (Button2State)) {
     digitalWrite(PB0, HIGH);
     delay(UpTime*2);}
        else if (digitalRead (Button3State)) {
          digitalWrite(PB0, HIGH);
          delay(UpTime*3);}
              else if (digitalRead (Button4State)) {
                digitalWrite(PB0, HIGH);
                delay(UpTime*4);}
                    else if (digitalRead (Button5State)) {
                      digitalWrite(PB0, HIGH);
                      delay(UpTime*5);}
                         else digitalWrite(PB0, LOW);

     digitalWrite(PB0, LOW); //turn pump signal off
   if (digitalRead (Button1State)) delay(DownTime);
   else if (digitalRead (Button2State)) delay(DownTime);
        else if (digitalRead (Button3State)) delay(DownTime);
              else if (digitalRead (Button4State)) delay(DownTime);
                    else if (digitalRead (Button5State)) delay(DownTime);
                          else digitalWrite(PB0, LOW);
}