WiCuBoBS - Slave

int ledPins[] = { 13, 12, 11, 10, 7, 6, 5, 4, 3, 2 };
int pinCount = 10;
void setup()
{
  int thisPin;
  for (int thisPin = 0; thisPin < pinCount; thisPin++)  {
    pinMode(ledPins[thisPin], OUTPUT);
  }
  Serial.begin(57600);
  Serial.println("You know what to do.");
}
void loop() {
  static int val = 0;
  if (Serial.available())
  {
    int ch = Serial.read();
    switch(ch)
    {
      case '1'...'9':
        val = ch - '0';
        Serial.println(val);
        for (int thisPin = 0; thisPin < val; thisPin++) {
        // turn the pin on:
        digitalWrite(ledPins[thisPin], HIGH);}
        delay(1000);
        for (int thisPin = val - 1; thisPin >= 0; thisPin--) {
        // turn the pin off:
        digitalWrite(ledPins[thisPin], LOW);
        delay(1000);}
        flash();
        break;
      case 'x':
        Serial.println(10);
        for (int thisPin = 0; thisPin < 10; thisPin++) {
        digitalWrite(ledPins[thisPin], HIGH);}
        delay(1000);
        for (int thisPin = 10 - 1; thisPin >= 0; thisPin--) {
        digitalWrite(ledPins[thisPin], LOW);
        delay(1000);}
        flash();
        break;
      case '0':
        Serial.println("NOW");
        flash();
    }
 }
val = 0;
}
void flash(){
  for (int i=0; i <= 3; i++){
        for (int thisPin = 0; thisPin < 10; thisPin++) {
        digitalWrite(ledPins[thisPin], HIGH);}
        delay(50);
        for (int thisPin = 10 - 1; thisPin >= 0; thisPin--) {
        digitalWrite(ledPins[thisPin], LOW);}
        delay(50);}
}