const int Button1 = 2;  
const int Button2 = 4;  
const int Button3 = 7;  
const int Button4 = 8;  
const int Button5 = 12; 
const int Bank1 = 3;    
const int Bank2 = 11;   
const int Bank3 = 9;    

int Purge;
int FlowCyc;
int Flow100;
int SparkCyc;
int Spark100;

void setup(){
  pinMode(Button1, INPUT_PULLUP); 
  pinMode(Button2, INPUT_PULLUP); 
  pinMode(Button3, INPUT_PULLUP); 
  pinMode(Button4, INPUT_PULLUP);        
  pinMode(Button5, INPUT_PULLUP);         

  pinMode(Bank1, OUTPUT);
  pinMode(Bank2, OUTPUT);
  pinMode(Bank3, OUTPUT);
  digitalWrite(Bank1,LOW);
  digitalWrite(Bank2,LOW);
  digitalWrite(Bank3,LOW);
  TCCR2B = TCCR2B & B11111000 | B00000111;
  TCCR1B = TCCR1B & B11111000 | B00000101;
  delay(1000);
}


void loop(){
  if (digitalRead(Button1)==LOW){
    analogWrite(Bank1, 127);
    analogWrite(Bank2, 127);
    delay(1000);
    analogWrite(Bank1, 0);
    analogWrite(Bank2, 0);
  }
  if(digitalRead(Button2)==LOW){
    // Sequence of duty cycles
    performDutyCycleSequence();
  }
  if(digitalRead(Button3)==LOW){
    analogWrite(Bank1, 255);
    analogWrite(Bank2, 255);
    delay(10000);
    analogWrite(Bank1, 0);
    analogWrite(Bank2, 0);
  }
   if(digitalRead(Button4)==LOW){
    performSparkCycleSequence();
  }
  if(digitalRead(Button5)==LOW){
    analogWrite(Bank3,255);
    delay(500);
    analogWrite(Bank3,0);
    delay(500);
    analogWrite(Bank3,255);
    delay(500);
    analogWrite(Bank3,0);
    delay(500);
    analogWrite(Bank3,255);
    delay(500);
    analogWrite(Bank3,0);
    delay(500);
    analogWrite(Bank3,255);
    delay(500);
    analogWrite(Bank3,0);
    delay(500);

  }
}

void performDutyCycleSequence() {
  analogWrite(Bank1, 80);
  analogWrite(Bank2, 80);
  delay(5000);
  
  analogWrite(Bank1, 100);
  analogWrite(Bank2, 100);
  delay(5000);

  analogWrite(Bank1, 127);
  analogWrite(Bank2, 127);
  delay(5000);

  analogWrite(Bank1, 153);
  analogWrite(Bank2, 153);
  delay(5000);

  analogWrite(Bank1, 191);
  analogWrite(Bank2, 191);
  delay(5000);

  analogWrite(Bank1, 217);
  analogWrite(Bank2, 217);
  delay(5000);

  analogWrite(Bank1, 255);
  analogWrite(Bank2, 255);
  delay(5000);
  analogWrite(Bank1, 0);
  analogWrite(Bank2, 0);
  delay(1000);

}

void performSparkCycleSequence() {
  analogWrite(Bank3, 102);
  delay(3000);

  analogWrite(Bank3, 153); 
  delay(3000);
  
  analogWrite(Bank3, 204);
  delay(3000);

  analogWrite(Bank3, 255);
  delay(3000);

  analogWrite(Bank3, 0);
  delay(1000);
}