#include <SoftPWM.h>

int i;
const byte LED_COUNT = 20;
uint8_t LEDS [LED_COUNT][2] =
{
  {2, 3},
  {3, 2},
  {2, 4},
  {4, 2},
  {2, 5},
  {5, 2},
  {2, 6},
  {6, 2},
  {3, 4},
  {4, 3},
  {3, 5},
  {5, 3},
  {3, 6},
  {6, 3},
  {4, 5},
  {5, 4},
  {4, 6},
  {6, 4},
  {5, 6},
  {6, 5}
};
int onLED;
int offLED;

void setup() {
  SoftPWMBegin();
  for (int i = 0; i < 9; i++)
    pinMode(LEDS[i] [0], INPUT);
  SoftPWMSetFadeTime(ALL, 200, 800);

}

void loop() {
  onLED = 200;
  offLED = 800;
  fadeUp();
}

void flashLED(byte j) {
  pinMode(LEDS[j] [0], OUTPUT);
  pinMode(LEDS[j] [1], OUTPUT);
  digitalWrite(LEDS[j] [0], LOW);
  digitalWrite(LEDS[j] [1], HIGH);
  fadeLED(j);
  delay(onLED);
  pinMode(LEDS[j] [0], INPUT);
  pinMode(LEDS[j] [1], INPUT);
  delay (offLED);
}

void fadeLED(byte j) {
  pinMode(LEDS[j] [0], OUTPUT);
  pinMode(LEDS[j] [1], OUTPUT);
  digitalWrite(LEDS[j] [0], LOW);
  SoftPWMSet(LEDS[j] [1], 255);
  delay(onLED);
  SoftPWMSet(LEDS[j] [1], 0);
  delay(offLED);
  pinMode(LEDS[j] [0], INPUT);
  pinMode(LEDS[j] [1], INPUT);

}



void chaseUp() {
  for (i = 0; i < LED_COUNT; i++) {
    flashLED(i);
  }
  vibrate();
}

void fadeUp() {
  for (i = 0; i < LED_COUNT; i++) {
    fadeLED(i);
  }
  vibrate();
}


void vibrate() {
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  digitalWrite(7, LOW);
  digitalWrite(8, HIGH);
  delay (1000);
  pinMode(7, INPUT);
  pinMode(8, INPUT);
}