"Stranger Things" alphabet sign

Project and Code by Rachel Robinson

/* ========================== Application.cpp =========================== */

#include "application.h"
#include "WS2801/WS2801.h"

// The colors of the wires may be totally different so
// BE SURE TO CHECK YOUR PIXELS TO SEE WHICH WIRES TO USE!

// SPARK CORE SPI PINOUTS
// http://docs.spark.io/#/firmware/communication-spi
// A5 (MOSI) Yellow wire on Adafruit Pixels
// A3 (SCK) Green wire on Adafruit Pixels

// Don't forget to connect the ground wire to Arduino ground,
// and the +5V wire to a +5V supply$

const int numPixel = 25;

// Set the argument to the NUMBER of pixels.
Adafruit_WS2801 strip = Adafruit_WS2801(numPixel);

// For 36mm LED pixels: these pixels internally represent color in a
// different format.  Either of the above constructors can accept an                                                                                                                                             
// optional extra parameter: WS2801_RGB is 'conventional' RGB order
// WS2801_GRB is the GRB order required by the 36mm pixels.  Other
// than this parameter, your code does not need to do anything different;
// the library will handle the format change.  Example:
//Adafruit_WS2801 strip = Adafruit_WS2801(25, WS2801_GRB);

void setup() {
    Spark.function("color", color);
    Spark.function("message", message);
    strip.begin();
    //color("[000,250,ooo]");
    
}

void loop() {

}

int color(String command) {
    // format is [RRR,GGG,BBB]
    // ie 1st red is [255,000,000]
    int red = command.substring(1,4).toInt();
    int green = command.substring(5,8).toInt();
    int blue = command.substring(9,12).toInt();
    int i;

    for (i=0; i < strip.numPixels(); i++) {
        strip.setPixelColor(i, red, green, blue);
        strip.show();
    }
}
        

int message (String command){ 
    color("[204,000,153]");
    delay(500);
    color("000,000,000");
    delay(500);
    
    
    
    for (int i=0; i < command.length(); i++){
        
        String characterholder = command.substring(i, i+1);
        
   
        if (characterholder=="a" || characterholder=="A"){
        strip.setPixelColor(24, 255,000,000);
        delay(500);
        }
        
        if (characterholder=="b"|| characterholder=="B"){
        strip.setPixelColor(23, 000,000,255);
        delay(500);
        }
        
        if (characterholder=="c"|| characterholder=="C"){
        strip.setPixelColor(22, 102,255,255);
        delay(500);
        }
        
        if (characterholder=="d"|| characterholder=="D"){
        strip.setPixelColor(21, 255,000,255);
        delay(500);
        }
        
        if (characterholder=="e"|| characterholder=="E"){
        strip.setPixelColor(20, 000,000,204);
        delay(500);
        }
        
        if (characterholder=="f"|| characterholder=="F"){
        strip.setPixelColor(19, 255,102,255);
        delay(500);
        }
        
        if (characterholder=="g"|| characterholder=="G"){
        strip.setPixelColor(18, 051,153,255);
        delay(500);
        }
        
        if (characterholder=="h"|| characterholder=="H"){
        strip.setPixelColor(17, 051,255,051);
        delay(500);
        }
        
        if (characterholder=="i"|| characterholder=="I"){
        strip.setPixelColor(8, 051,051,000);
        delay(500);
        }
        
        if (characterholder=="j"|| characterholder=="J"){
        strip.setPixelColor(9, 255,153,51);
        delay(500);
        }
        
        if (characterholder=="k"|| characterholder=="K"){
        strip.setPixelColor(10,255,102,204);
        delay(500);
        }
        
        if (characterholder=="l"|| characterholder=="L"){
        strip.setPixelColor(11, 000,102,000);
        delay(500);
        }
        
        if (characterholder=="m"|| characterholder=="M"){
        strip.setPixelColor(12, 000,51,204);
        delay(500);
        }
        
        if (characterholder=="n"|| characterholder=="N"){
        strip.setPixelColor(13, 000,151,129);
        delay(500);
        }
        
        if (characterholder=="o"|| characterholder=="O"){
        strip.setPixelColor(14, 102,000,102);
        delay(500);
        }
        
        if (characterholder=="p"|| characterholder=="P"){
        strip.setPixelColor(15,204,255,204);
        delay(500);
        }
        
        if (characterholder=="q"|| characterholder=="Q"){
        strip.setPixelColor(16, 051,051,000);
        delay(500);
        }
        
        if (characterholder=="r"|| characterholder=="R"){
        strip.setPixelColor(7, 153,153,255);
        delay(500);
        }
        
        if (characterholder=="s"|| characterholder=="S"){
        strip.setPixelColor(6, 000,153,051);
        }
        
        if (characterholder=="t"|| characterholder=="T"){
        strip.setPixelColor(5, 051,051,204);
        delay(500);
        }
        
        if (characterholder=="u"|| characterholder=="U"){
        strip.setPixelColor(4, 204,000,000);
        delay(500);
        }
        
        if (characterholder=="v"|| characterholder=="V"){
        strip.setPixelColor(3, 255,204,000);
        delay(500);
        }
        
        if (characterholder=="w"|| characterholder=="W"){
        strip.setPixelColor(2, 255,000,102);
        delay(500);
        }
        
        if (characterholder=="x"|| characterholder=="X"){
        strip.setPixelColor(1, 102,153,153);
        delay(500);
        }
        
        if (characterholder=="y"|| characterholder=="Y"){
        strip.setPixelColor(0, 051,102,204);
        delay(500);
        
        }
        
        strip.show();
        delay(500);
        color("[000,000,000]");
       
        
    }
}