#include //inport the library, make sure to install it first String message =""; //create an empty string to store the future received data const int numDevices = 4; // number of MAX7219s used in this case 4 const long scrollDelay = 60; // adjust scrolling speed (lower dela -> higher scroll speed) unsigned long bufferLong [14] = {0}; int initial = 0; LedControl lc=LedControl(11,13,10,numDevices);//D11=DATA, D13=CLK, D10=LOAD //select the used pins const unsigned char initialText[] PROGMEM ={"Open App and send text "}; //This will be the initial displayed text /*After you send a text using the smartphone (bluetooth) you have to wait till the last text finish scrooling. Once it finish, your new text will be displayed. */ /*Here we sabe on to the FLASH memory all the characters, icons and symbols. If we use the SRAM memory we will have problems. */ const unsigned char scrollText0[] PROGMEM ={" "}; const unsigned char scrollText1[] PROGMEM ={"!"}; const unsigned char scrollText2[] PROGMEM ={"''"}; const unsigned char scrollText3[] PROGMEM ={"#"}; const unsigned char scrollText4[] PROGMEM ={"$"}; const unsigned char scrollText5[] PROGMEM ={"%"}; const unsigned char scrollText6[] PROGMEM ={"&"}; const unsigned char scrollText7[] PROGMEM ={"'"}; const unsigned char scrollText8[] PROGMEM ={"("}; const unsigned char scrollText9[] PROGMEM ={")"}; const unsigned char scrollText10[] PROGMEM ={"*"}; const unsigned char scrollText11[] PROGMEM ={"+"}; const unsigned char scrollText12[] PROGMEM ={","}; const unsigned char scrollText13[] PROGMEM ={"-"}; const unsigned char scrollText14[] PROGMEM ={"."}; const unsigned char scrollText15[] PROGMEM ={"/"}; const unsigned char scrollText16[] PROGMEM ={"0"}; const unsigned char scrollText17[] PROGMEM ={"1"}; const unsigned char scrollText18[] PROGMEM ={"2"}; const unsigned char scrollText19[] PROGMEM ={"3"}; const unsigned char scrollText20[] PROGMEM ={"4"}; const unsigned char scrollText21[] PROGMEM ={"5"}; const unsigned char scrollText22[] PROGMEM ={"6"}; const unsigned char scrollText23[] PROGMEM ={"7"}; const unsigned char scrollText24[] PROGMEM ={"8"}; const unsigned char scrollText25[] PROGMEM ={"9"}; const unsigned char scrollText26[] PROGMEM ={":"}; const unsigned char scrollText27[] PROGMEM ={"<"}; const unsigned char scrollText28[] PROGMEM ={"="}; const unsigned char scrollText29[] PROGMEM ={">"}; const unsigned char scrollText30[] PROGMEM ={"?"}; const unsigned char scrollText31[] PROGMEM ={"@"}; const unsigned char scrollText32[] PROGMEM ={"A"}; const unsigned char scrollText33[] PROGMEM ={"B"}; const unsigned char scrollText34[] PROGMEM ={"C"}; const unsigned char scrollText35[] PROGMEM ={"D"}; const unsigned char scrollText36[] PROGMEM ={"E"}; const unsigned char scrollText37[] PROGMEM ={"F"}; const unsigned char scrollText38[] PROGMEM ={"G"}; const unsigned char scrollText39[] PROGMEM ={"H"}; const unsigned char scrollText40[] PROGMEM ={"I"}; const unsigned char scrollText41[] PROGMEM ={"J"}; const unsigned char scrollText42[] PROGMEM ={"K"}; const unsigned char scrollText43[] PROGMEM ={"L"}; const unsigned char scrollText44[] PROGMEM ={"M"}; const unsigned char scrollText45[] PROGMEM ={"N"}; const unsigned char scrollText46[] PROGMEM ={"O"}; const unsigned char scrollText47[] PROGMEM ={"P"}; const unsigned char scrollText48[] PROGMEM ={"Q"}; const unsigned char scrollText49[] PROGMEM ={"R"}; const unsigned char scrollText50[] PROGMEM ={"S"}; const unsigned char scrollText51[] PROGMEM ={"T"}; const unsigned char scrollText52[] PROGMEM ={"U"}; const unsigned char scrollText53[] PROGMEM ={"V"}; const unsigned char scrollText54[] PROGMEM ={"W"}; const unsigned char scrollText55[] PROGMEM ={"X"}; const unsigned char scrollText56[] PROGMEM ={"Y"}; const unsigned char scrollText57[] PROGMEM ={"Z"}; const unsigned char scrollText58[] PROGMEM ={"["}; const unsigned char scrollText59[] PROGMEM ={"]"}; const unsigned char scrollText60[] PROGMEM ={"^"}; const unsigned char scrollText61[] PROGMEM ={"_"}; const unsigned char scrollText62[] PROGMEM ={""}; const unsigned char scrollText63[] PROGMEM ={"a"}; const unsigned char scrollText64[] PROGMEM ={"b"}; const unsigned char scrollText65[] PROGMEM ={"c"}; const unsigned char scrollText66[] PROGMEM ={"d"}; const unsigned char scrollText67[] PROGMEM ={"e"}; const unsigned char scrollText68[] PROGMEM ={"f"}; const unsigned char scrollText69[] PROGMEM ={"g"}; const unsigned char scrollText70[] PROGMEM ={"h"}; const unsigned char scrollText71[] PROGMEM ={"i"}; const unsigned char scrollText72[] PROGMEM ={"j"}; const unsigned char scrollText73[] PROGMEM ={"k"}; const unsigned char scrollText74[] PROGMEM ={"l"}; const unsigned char scrollText75[] PROGMEM ={"m"}; const unsigned char scrollText76[] PROGMEM ={"n"}; const unsigned char scrollText77[] PROGMEM ={"o"}; const unsigned char scrollText78[] PROGMEM ={"p"}; const unsigned char scrollText79[] PROGMEM ={"q"}; const unsigned char scrollText80[] PROGMEM ={"r"}; const unsigned char scrollText81[] PROGMEM ={"s"}; const unsigned char scrollText82[] PROGMEM ={"t"}; const unsigned char scrollText83[] PROGMEM ={"u"}; const unsigned char scrollText84[] PROGMEM ={"v"}; const unsigned char scrollText85[] PROGMEM ={"w"}; const unsigned char scrollText86[] PROGMEM ={"x"}; const unsigned char scrollText87[] PROGMEM ={"y"}; const unsigned char scrollText88[] PROGMEM ={"z"}; const unsigned char scrollText89[] PROGMEM ={"{"}; const unsigned char scrollText90[] PROGMEM ={"|"}; const unsigned char scrollText91[] PROGMEM ={"}"}; const unsigned char scrollText92[] PROGMEM ={"~"}; //We start our setup void setup(){ Serial.begin(9600); //Start the serial comunication fot the bluetooth module for (int x=0; x 0) // Don't read unless you receive something new { message = Serial.readString(); //Store the bluetooth received text initial=1; } //Go letter by letter and send the dots vector for the LEDs to the drivers for (int i=0; i < message.length(); i++) { if (message[i] == ' ') { scrollMessage(scrollText0); } if (message[i] == '!') { scrollMessage(scrollText1); } if (message[i] == '"') { scrollMessage(scrollText2); } if (message[i] == '#') { scrollMessage(scrollText3); } if (message[i] == '&') { scrollMessage(scrollText4); } if (message[i] == '%') { scrollMessage(scrollText5); } if (message[i] == '&') { scrollMessage(scrollText5); } if (message[i] == '(') { scrollMessage(scrollText8); } if (message[i] == ')') { scrollMessage(scrollText9); } if (message[i] == '*') { scrollMessage(scrollText10); } if (message[i] == '+') { scrollMessage(scrollText11); } if (message[i] == ',') { scrollMessage(scrollText12); } if (message[i] == '-') { scrollMessage(scrollText13); } if (message[i] == '.') { scrollMessage(scrollText14); } if (message[i] == '/') { scrollMessage(scrollText15); } if (message[i] == '0') { scrollMessage(scrollText16); } if (message[i] == '1') { scrollMessage(scrollText17); } if (message[i] == '2') { scrollMessage(scrollText18); } if (message[i] == '3') { scrollMessage(scrollText19); } if (message[i] == '4') { scrollMessage(scrollText20); } if (message[i] == '5') { scrollMessage(scrollText21); } if (message[i] == '6') { scrollMessage(scrollText22); } if (message[i] == '7') { scrollMessage(scrollText23); } if (message[i] == '8') { scrollMessage(scrollText24); } if (message[i] == '9') { scrollMessage(scrollText25); } if (message[i] == ':') { scrollMessage(scrollText26); } if (message[i] == '<') { scrollMessage(scrollText27); } if (message[i] == '=') { scrollMessage(scrollText28); } if (message[i] == '>') { scrollMessage(scrollText29); } if (message[i] == '?') { scrollMessage(scrollText30); } if (message[i] == '@') { scrollMessage(scrollText31); } if (message[i] == 'A') { scrollMessage(scrollText32); } if (message[i] == 'B') { scrollMessage(scrollText33); } if (message[i] == 'C') { scrollMessage(scrollText34); } if (message[i] == 'D') { scrollMessage(scrollText35); } if (message[i] == 'E') { scrollMessage(scrollText36); } if (message[i] == 'F') { scrollMessage(scrollText37); } if (message[i] == 'G') { scrollMessage(scrollText38); } if (message[i] == 'H') { scrollMessage(scrollText39); } if (message[i] == 'I') { scrollMessage(scrollText40); } if (message[i] == 'J') { scrollMessage(scrollText41); } if (message[i] == 'K') { scrollMessage(scrollText42); } if (message[i] == 'L') { scrollMessage(scrollText43); } if (message[i] == 'M') { scrollMessage(scrollText44); } if (message[i] == 'N') { scrollMessage(scrollText45); } if (message[i] == 'O') { scrollMessage(scrollText46); } if (message[i] == 'P') { scrollMessage(scrollText47); } if (message[i] == 'Q') { scrollMessage(scrollText48); } if (message[i] == 'R') { scrollMessage(scrollText49); } if (message[i] == 'S') { scrollMessage(scrollText50); } if (message[i] == 'T') { scrollMessage(scrollText51); } if (message[i] == 'U') { scrollMessage(scrollText52); } if (message[i] == 'V') { scrollMessage(scrollText53); } if (message[i] == 'W') { scrollMessage(scrollText54); } if (message[i] == 'X') { scrollMessage(scrollText55); } if (message[i] == 'Y') { scrollMessage(scrollText56); } if (message[i] == 'Z') { scrollMessage(scrollText57); } if (message[i] == '[') { scrollMessage(scrollText58); } if (message[i] == '[') { scrollMessage(scrollText59); } if (message[i] == '^') { scrollMessage(scrollText60); } if (message[i] == '_') { scrollMessage(scrollText61); } if (message[i] == 'a') { scrollMessage(scrollText63); } if (message[i] == 'b') { scrollMessage(scrollText64); } if (message[i] == 'c') { scrollMessage(scrollText65); } if (message[i] == 'd') { scrollMessage(scrollText66); } if (message[i] == 'e') { scrollMessage(scrollText67); } if (message[i] == 'f') { scrollMessage(scrollText68); } if (message[i] == 'g') { scrollMessage(scrollText69); } if (message[i] == 'h') { scrollMessage(scrollText70); } if (message[i] == 'i') { scrollMessage(scrollText71); } if (message[i] == 'j') { scrollMessage(scrollText72); } if (message[i] == 'k') { scrollMessage(scrollText73); } if (message[i] == 'l') { scrollMessage(scrollText74); } if (message[i] == 'm') { scrollMessage(scrollText75); } if (message[i] == 'n') { scrollMessage(scrollText76); } if (message[i] == 'o') { scrollMessage(scrollText77); } if (message[i] == 'p') { scrollMessage(scrollText78); } if (message[i] == 'q') { scrollMessage(scrollText79); } if (message[i] == 'r') { scrollMessage(scrollText80); } if (message[i] == 's') { scrollMessage(scrollText81); } if (message[i] == 't') { scrollMessage(scrollText82); } if (message[i] == 'u') { scrollMessage(scrollText83); } if (message[i] == 'v') { scrollMessage(scrollText84); } if (message[i] == 'w') { scrollMessage(scrollText85); } if (message[i] == 'x') { scrollMessage(scrollText86); } if (message[i] == 'y') { scrollMessage(scrollText87); } if (message[i] == 'z') { scrollMessage(scrollText88); } if (message[i] == '{') { scrollMessage(scrollText89); } if (message[i] == '|') { scrollMessage(scrollText90); } if (message[i] == '}') { scrollMessage(scrollText91); } if (message[i] == '~') { scrollMessage(scrollText92); } } } //////////////////////////////////////////////////////EDIT THE CHARACTERS/////////////////////////////////////////// const unsigned char font5x7 [] PROGMEM = { //Numeric Font Matrix (Arranged as 7x font data + 1x kerning data) B00000000, //Space (Char 0x20) B00000000, B00000000, B00000000, B00000000, B00000000, B00000000, 3,//this number gives the empty space column amount between the characters B10000000, //! B10000000, B10000000, B10000000, B00000000, B00000000, B10000000, 2, B10100000, //" B10100000, B10100000, B00000000, B00000000, B00000000, B00000000, 4, B01010000, //# B01010000, B11111000, B01010000, B11111000, B01010000, B01010000, 6, B00100000, //$ B01111000, B10100000, B01110000, B00101000, B11110000, B00100000, 6, B11000000, //% B11001000, B00010000, B00100000, B01000000, B10011000, B00011000, 6, B01100000, //& B10010000, B10100000, B01000000, B10101000, B10010000, B01101000, 6, B11000000, //' B01000000, B10000000, B00000000, B00000000, B00000000, B00000000, 3, B00100000, //( B01000000, B10000000, B10000000, B10000000, B01000000, B00100000, 4, B10000000, //) B01000000, B00100000, B00100000, B00100000, B01000000, B10000000, 4, B00000000, //* B00100000, B10101000, B01110000, B10101000, B00100000, B00000000, 6, B00000000, //+ B00100000, B00100000, B11111000, B00100000, B00100000, B00000000, 6, B00000000, //, B00000000, B00000000, B00000000, B11000000, B01000000, B10000000, 3, B00000000, //- B00000000, B11111000, B00000000, B00000000, B00000000, B00000000, 6, B00000000, //. B00000000, B00000000, B00000000, B00000000, B11000000, B11000000, 3, B00000000, /// B00001000, B00010000, B00100000, B01000000, B10000000, B00000000, 6, B01110000, //0 B10001000, B10011000, B10101000, B11001000, B10001000, B01110000, 6, B01000000, //1 B11000000, B01000000, B01000000, B01000000, B01000000, B11100000, 4, B01110000, //2 B10001000, B00001000, B00010000, B00100000, B01000000, B11111000, 6, B11111000, //3 B00010000, B00100000, B00010000, B00001000, B10001000, B01110000, 6, B00010000, //4 B00110000, B01010000, B10010000, B11111000, B00010000, B00010000, 6, B11111000, //5 B10000000, B11110000, B00001000, B00001000, B10001000, B01110000, 6, B00110000, //6 B01000000, B10000000, B11110000, B10001000, B10001000, B01110000, 6, B11111000, //7 B10001000, B00001000, B00010000, B00100000, B00100000, B00100000, 6, B01110000, //8 B10001000, B10001000, B01110000, B10001000, B10001000, B01110000, 6, B01110000, //9 B10001000, B10001000, B01111000, B00001000, B00010000, B01100000, 6, B00000000, //: B11000000, B11000000, B00000000, B11000000, B11000000, B00000000, 3, B00000000, //; B11000000, B11000000, B00000000, B11000000, B01000000, B10000000, 3, B00010000, //< B00100000, B01000000, B10000000, B01000000, B00100000, B00010000, 5, B00000000, //= B00000000, B11111000, B00000000, B11111000, B00000000, B00000000, 6, B10000000, //> B01000000, B00100000, B00010000, B00100000, B01000000, B10000000, 5, B01110000, //? B10001000, B00001000, B00010000, B00100000, B00000000, B00100000, 6, B01110000, //@ B10001000, B00001000, B01101000, B10101000, B10101000, B01110000, 6, B01110000, //A B10001000, B10001000, B10001000, B11111000, B10001000, B10001000, 6, B11110000, //B B10001000, B10001000, B11110000, B10001000, B10001000, B11110000, 6, B01110000, //C B10001000, B10000000, B10000000, B10000000, B10001000, B01110000, 6, B11100000, //D B10010000, B10001000, B10001000, B10001000, B10010000, B11100000, 6, B11111000, //E B10000000, B10000000, B11110000, B10000000, B10000000, B11111000, 6, B11111000, //F B10000000, B10000000, B11110000, B10000000, B10000000, B10000000, 6, B01110000, //G B10001000, B10000000, B10111000, B10001000, B10001000, B01111000, 6, B10001000, //H B10001000, B10001000, B11111000, B10001000, B10001000, B10001000, 6, B11100000, //I B01000000, B01000000, B01000000, B01000000, B01000000, B11100000, 4, B00111000, //J B00010000, B00010000, B00010000, B00010000, B10010000, B01100000, 6, B10001000, //K B10010000, B10100000, B11000000, B10100000, B10010000, B10001000, 6, B10000000, //L B10000000, B10000000, B10000000, B10000000, B10000000, B11111000, 6, B10001000, //M B11011000, B10101000, B10101000, B10001000, B10001000, B10001000, 6, B10001000, //N B10001000, B11001000, B10101000, B10011000, B10001000, B10001000, 6, B01110000, //O B10001000, B10001000, B10001000, B10001000, B10001000, B01110000, 6, B11110000, //P B10001000, B10001000, B11110000, B10000000, B10000000, B10000000, 6, B01110000, //Q B10001000, B10001000, B10001000, B10101000, B10010000, B01101000, 6, B11110000, //R B10001000, B10001000, B11110000, B10100000, B10010000, B10001000, 6, B01111000, //S B10000000, B10000000, B01110000, B00001000, B00001000, B11110000, 6, B11111000, //T B00100000, B00100000, B00100000, B00100000, B00100000, B00100000, 6, B10001000, //U B10001000, B10001000, B10001000, B10001000, B10001000, B01110000, 6, B10001000, //V B10001000, B10001000, B10001000, B10001000, B01010000, B00100000, 6, B10001000, //W B10001000, B10001000, B10101000, B10101000, B10101000, B01010000, 6, B10001000, //X B10001000, B01010000, B00100000, B01010000, B10001000, B10001000, 6, B10001000, //Y B10001000, B10001000, B01010000, B00100000, B00100000, B00100000, 6, B11111000, //Z B00001000, B00010000, B00100000, B01000000, B10000000, B11111000, 6, B11100000, //[ B10000000, B10000000, B10000000, B10000000, B10000000, B11100000, 4, B00000000, //(Backward Slash) B10000000, B01000000, B00100000, B00010000, B00001000, B00000000, 6, B11100000, //] B00100000, B00100000, B00100000, B00100000, B00100000, B11100000, 4, B00100000, //^ B01010000, B10001000, B00000000, B00000000, B00000000, B00000000, 6, B00000000, //_ B00000000, B00000000, B00000000, B00000000, B00000000, B11111000, 6, B10000000, //` B01000000, B00100000, B00000000, B00000000, B00000000, B00000000, 4, B00000000, //a B00000000, B01110000, B00001000, B01111000, B10001000, B01111000, 6, B10000000, //b B10000000, B10110000, B11001000, B10001000, B10001000, B11110000, 6, B00000000, //c B00000000, B01110000, B10001000, B10000000, B10001000, B01110000, 6, B00001000, //d B00001000, B01101000, B10011000, B10001000, B10001000, B01111000, 6, B00000000, //e B00000000, B01110000, B10001000, B11111000, B10000000, B01110000, 6, B00110000, //f B01001000, B01000000, B11100000, B01000000, B01000000, B01000000, 6, B00000000, //g B01111000, B10001000, B10001000, B01111000, B00001000, B01110000, 6, B10000000, //h B10000000, B10110000, B11001000, B10001000, B10001000, B10001000, 6, B01000000, //i B00000000, B11000000, B01000000, B01000000, B01000000, B11100000, 4, B00010000, //j B00000000, B00110000, B00010000, B00010000, B10010000, B01100000, 5, B10000000, //k B10000000, B10010000, B10100000, B11000000, B10100000, B10010000, 5, B11000000, //l B01000000, B01000000, B01000000, B01000000, B01000000, B11100000, 4, B00000000, //m B00000000, B11010000, B10101000, B10101000, B10001000, B10001000, 6, B00000000, //n B00000000, B10110000, B11001000, B10001000, B10001000, B10001000, 6, B00000000, //o B00000000, B01110000, B10001000, B10001000, B10001000, B01110000, 6, B00000000, //p B00000000, B11110000, B10001000, B11110000, B10000000, B10000000, 6, B00000000, //q B00000000, B01101000, B10011000, B01111000, B00001000, B00001000, 6, B00000000, //r B00000000, B10110000, B11001000, B10000000, B10000000, B10000000, 6, B00000000, //s B00000000, B01110000, B10000000, B01110000, B00001000, B11110000, 6, B01000000, //t B01000000, B11100000, B01000000, B01000000, B01001000, B00110000, 6, B00000000, //u B00000000, B10001000, B10001000, B10001000, B10011000, B01101000, 6, B00000000, //v B00000000, B10001000, B10001000, B10001000, B01010000, B00100000, 6, B00000000, //w B00000000, B10001000, B10101000, B10101000, B10101000, B01010000, 6, B00000000, //x B00000000, B10001000, B01010000, B00100000, B01010000, B10001000, 6, B00000000, //y B00000000, B10001000, B10001000, B01111000, B00001000, B01110000, 6, B00000000, //z B00000000, B11111000, B00010000, B00100000, B01000000, B11111000, 6, B00100000, //{ B01000000, B01000000, B10000000, B01000000, B01000000, B00100000, 4, B10000000, //| B10000000, B10000000, B10000000, B10000000, B10000000, B10000000, 2, B10000000, //} B01000000, B01000000, B00100000, B01000000, B01000000, B10000000, 4, B00000000, //~ B00000000, B00000000, B01101000, B10010000, B00000000, B00000000, 6, B01100000, // (Char 0x7F) B10010000, B10010000, B01100000, B00000000, B00000000, B00000000, 5, B00000000, // smiley B01100000, B01100110, B00000000, B10000001, B01100110, B00011000, 5 }; //This are the functions that send the serial data of each //vectors to the MAX7219 drivers void scrollFont() { for (int counter=0x20;counter<0x80;counter++){ loadBufferLong(counter); delay(500); } } // Scroll Message void scrollMessage(const unsigned char * messageString) { int counter = 0; int myChar=0; do { // read back a char myChar = pgm_read_byte_near(messageString + counter); if (myChar != 0){ loadBufferLong(myChar); } counter++; } while (myChar != 0); } // Load character into scroll buffer void loadBufferLong(int ascii){ if (ascii >= 0x20 && ascii <=0x7f){ for (int a=0;a<7;a++){ // Loop 7 times for a 5x7 font unsigned long c = pgm_read_byte_near(font5x7 + ((ascii - 0x20) * 8) + a); // Index into character table to get row data unsigned long x = bufferLong [a*2]; // Load current scroll buffer x = x | c; // OR the new character onto end of current bufferLong [a*2] = x; // Store in buffer } byte count = pgm_read_byte_near(font5x7 +((ascii - 0x20) * 8) + 7); // Index into character table for kerning data for (byte x=0; x>24); // Mask off second character lc.setRow(2,a,y); // Send row to relevent MAX7219 chip y = (x>>16); // Mask off third character lc.setRow(1,a,y); // Send row to relevent MAX7219 chip y = (x>>8); // Mask off forth character lc.setRow(0,a,y); // Send row to relevent MAX7219 chip } }