FastLED Letters

#include "FastLED.h"

#define NUM_LEDS 63
#define DATA_PIN 2
#define CLOCK_PIN 3

// Define the array of leds
CRGB leds[NUM_LEDS];

int leds_left[] = {42,44,43,47,46,45,51,50,49,48,56,55,54,53,52,62,61,60,59,58,57}; //led_side[0]
int leds_right[] = {41,39,40,36,37,38,32,33,34,35,27,28,29,30,31,21,22,23,24,25,26};  //led_side[1]
int leds_back[] = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};  //led_side[2]

int led_side[][21] = {{42,44,43,47,46,45,51,50,49,48,56,55,54,53,52,62,61,60,59,58,57}, //left
                      {41,39,40,36,37,38,32,33,34,35,27,28,29,30,31,21,22,23,24,25,26}, //right
                      {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20}};          //back

int ledLetters[][21] = {
  {1,2,5,3,6,7,8,9,14,10}, // 0 = A
  {1,2,5,3,6,7,8,13,11,17,18}, // 1 = B
  {1,2,5,3,6,13,11,17,18}, // 2 = C
  {1,2,5,3,7,9,13,11,17,18}, // 3 = D
  {1,2,5,6,7,8,13,17,18}, // 4 = E
  {1,2,5,6,7,8,13,17}, // 5 = F
  {1,2,5,6,8,9,13,11,17,18}, // 6 = G
  {1,5,3,6,7,8,9,13,11,18}, // 7 = H
  {1,2,4,7,8,12,17,18}, // 8 = I
  {2,3,9,13,11,17,18}, // 9 = J
  {1,5,3,7,8,13,11,17,19}, // 10 = K
  {1,5,7,13,17,18,19}, // 11 = L
  {5,3,6,7,8,9,14,12,10,15,20}, // 12 = M
  {5,6,7,9,14,12,11,15,18}, // 13 = N
  {1,2,5,3,6,9,13,11,17,18}, // 14 = O
  {1,2,5,3,7,8,13,16}, // 15 = P
  {1,2,5,3,6,9,13,11,17,18,19}, // 16 = Q
  {1,2,5,3,6,7,8,14,11,15,19}, // 17 = R
  {2,1,5,7,8,11,18,17}, // 18 = S
  {5,4,3,7,12,17}, // 19 = T
  {5,3,6,9,13,11,17,18}, // 20 = U
  {5,7,9,12,11,18}, // 21 = V
  {5,3,6,9,13,12,11,17,18}, // 22 = W
  {5,3,7,8,12,11,17,19}, // 23 = X
  {5,3,7,8,12,17}, // 24 = Y
  {5,4,3,8,12,17,18,19}, // 25 = Z
  {}, // 26 = LEERZEICHEN
  {1,2,5,3,6,9,13,11,17,18}, // 27 = 0
  {1,2,4,7,8,12,17,18}, // 28 = 1
  {1,2,5,3,8,12,17,18,19}, // 29 = 2
  {1,2,3,7,8,11,17,18}, // 30 = 3
  {0,1,5,6,7,8,9,12,17}, // 31 = 4
  {1,2,5,6,7,8,11,17,18}, // 32 = 5
  {1,2,5,6,7,8,13,11,17,18}, // 33 = 6
  {5,4,3,8,12,17}, // 34 = 7
  {1,2,5,3,7,8,13,11,17,18}, // 35 = 8
  {1,2,5,3,6,7,8,9,11,17,18}, // 36 = 9
};

// Hilfsarray fuer die Darstellung von Buchstaben und Ziffern
int letterLength[] = {
  10, // A
  11, // B
  9, // C
  10, // D
  9, // E
  8, // F
  10, // G
  10, // H
  8, // I
  7, // J
  9, // K
  7, // L
  11, // M
  9, // N
  10, // O
  8, // P
  11, // Q
  11, // R
  8, // S
  6, // T
  8, // U
  6, // V
  9, // W
  8, // X
  6, // Y
  8, // Z
  0, // LEERZEICHEN
  10, // 0
  8, // 1
  9, // 2
  8, // 3
  10, // 4
  9, // 5
  10, // 6
  6, // 7
  10, // 8
  11, // 9
};

void setup() {
  delay(1000);
  FastLED.addLeds<WS2801, DATA_PIN, CLOCK_PIN, RGB>(leds, NUM_LEDS);
}

void loop() {
  int hue = random8();
  for(int symbol=0;symbol<37;symbol++){ //gehe alle Symbole durch
    for(int i = 0;i<NUM_LEDS;i++) leds[i] = CRGB::Black;
    for(int side = 0;side<3;side++){      //jede Seite
      for(int j = 0;j<letterLength[symbol];j++){
          leds[led_side[side][ledLetters[symbol][j]]] = CHSV(hue, 255, 255);
        }
      }
  FastLED.show();
  delay(2000);
  }
}