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#define ROW_1 2 #define ROW_2 3 #define ROW_3 4 #define ROW_4 5 #define ROW_5 6 #define ROW_6 7 #define ROW_7 8 #define ROW_8 9

#define COL_1 10 #define COL_2 11 #define COL_3 12 #define COL_4 13 #define COL_5 A0 #define COL_6 A1 #define COL_7 A2 #define COL_8 A3

const byte rows[] = { ROW_1, ROW_2, ROW_3, ROW_4, ROW_5, ROW_6, ROW_7, ROW_8 };

// The display buffer // It's prefilled with a smiling face (1 = ON, 0 = OFF) byte TODOS[] = {B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111,B11111111}; byte EX[] = {B00000000,B00010000,B00010000,B00010000,B00010000,B00000000,B00010000,B00000000}; byte A[] = {B00000000,B00011000,B00100100,B00100100,B00111100,B00100100,B00100100,B00000000}; byte B[] = {B01111000,B01001000,B01001000,B01110000,B01001000,B01000100,B01000100,B01111100}; byte C[] = {B00000000,B00011110,B00100000,B01000000,B01000000,B01000000,B00100000,B00011110}; byte D[] = {B00000000,B00111000,B00100100,B00100010,B00100010,B00100100,B00111000,B00000000}; byte E[] = {B00000000,B00111100,B00100000,B00111000,B00100000,B00100000,B00111100,B00000000}; byte F[] = {B00000000,B00111100,B00100000,B00111000,B00100000,B00100000,B00100000,B00000000}; byte G[] = {B00000000,B00111110,B00100000,B00100000,B00101110,B00100010,B00111110,B00000000}; byte H[] = {B00000000,B00100100,B00100100,B00111100,B00100100,B00100100,B00100100,B00000000}; byte I[] = {B00000000,B00111000,B00010000,B00010000,B00010000,B00010000,B00111000,B00000000}; byte J[] = {B00000000,B00011100,B00001000,B00001000,B00001000,B00101000,B00111000,B00000000}; byte K[] = {B00000000,B00100100,B00101000,B00110000,B00101000,B00100100,B00100100,B00000000}; byte L[] = {B00000000,B00100000,B00100000,B00100000,B00100000,B00100000,B00111100,B00000000}; byte M[] = {B00000000,B00000000,B01000100,B10101010,B10010010,B10000010,B10000010,B00000000}; byte N[] = {B00000000,B00100010,B00110010,B00101010,B00100110,B00100010,B00000000,B00000000}; byte O[] = {B00000000,B00111100,B01000010,B01000010,B01000010,B01000010,B00111100,B00000000}; byte P[] = {B00000000,B00111000,B00100100,B00100100,B00111000,B00100000,B00100000,B00000000}; byte Q[] = {B00000000,B00111100,B01000010,B01000010,B01000010,B01000110,B00111110,B00000001}; byte R[] = {B00000000,B00111000,B00100100,B00100100,B00111000,B00100100,B00100100,B00000000}; byte S[] = {B00000000,B00111100,B00100000,B00111100,B00000100,B00000100,B00111100,B00000000}; byte T[] = {B00000000,B01111100,B00010000,B00010000,B00010000,B00010000,B00010000,B00000000}; byte U[] = {B00000000,B01000010,B01000010,B01000010,B01000010,B00100100,B00011000,B00000000}; byte V[] = {B00000000,B00100010,B00100010,B00100010,B00010100,B00010100,B00001000,B00000000}; byte W[] = {B00000000,B10000010,B10010010,B01010100,B01010100,B00101000,B00000000,B00000000}; byte X[] = {B00000000,B01000010,B00100100,B00011000,B00011000,B00100100,B01000010,B00000000}; byte Y[] = {B00000000,B01000100,B00101000,B00010000,B00010000,B00010000,B00010000,B00000000}; byte Z[] = {B00000000,B00111100,B00000100,B00001000,B00010000,B00100000,B00111100,B00000000};

float timeCount = 0;

void setup() { // Open serial port Serial.begin(9600);

// Set all used pins to OUTPUT
// This is very important! If the pins are set to input
// the display will be very dim.
for (byte i = 2; i <= 13; i++)
    pinMode(i, OUTPUT);
pinMode(A0, OUTPUT);
pinMode(A1, OUTPUT);
pinMode(A2, OUTPUT);
pinMode(A3, OUTPUT);

}

void loop() { // This could be rewritten to not use a delay, which would make it appear brighter delay(5); timeCount += 1; if(timeCount < 70) { drawScreen(A); } else if (timeCount < 1) { // do nothing } else if (timeCount < 150) { drawScreen(R); } else if (timeCount < 1) { // nothing } else if (timeCount < 270) { drawScreen(D); } else if (timeCount < 1) { // nothing } else if (timeCount < 350) { drawScreen(U); } else if (timeCount < 1) { // nothing } else if (timeCount < 430) { drawScreen(I); } else if (timeCount < 1) { // nothing } else if (timeCount < 510) { drawScreen(N); } else if (timeCount < 1) {

} else if (timeCount < 550) { drawScreen(O); } else if (timeCount < 1) { // do nothing } else if (timeCount < 590) { drawScreen(EX); } else if (timeCount < 1) { // nothing } else if (timeCount < 630) { drawScreen(EX); } else if (timeCount < 1) {

//} else if (timeCount < 670) { //drawScreen(A); //} else if (timeCount < 1) {

//} else if (timeCount < 710) { //drawScreen(R); //} else if (timeCount < 1) {

//} else if (timeCount < 750) { //drawScreen(D); //} else if (timeCount < 1) {

//} else if (timeCount < 790) { //drawScreen(U); //} else if (timeCount < 1) {

//} else if (timeCount < 830) { //drawScreen(I); //} else if (timeCount < 1) {

//} else if (timeCount < 870) {

//} else if (timeCount < 1) {

//} else if (timeCount < 910) { // drawScreen(O); //} else if (timeCount < 1) {

} else { // back to the start timeCount = 0; } } void drawScreen(byte buffer2[]){

// Turn on each row in series for (byte i = 0; i < 8; i++) { setColumns(buffer2[i]); // Set columns for this specific row

    digitalWrite(rows[i], HIGH);
    delay(2); // Set this to 50 or 100 if you want to see the multiplexing effect!
    digitalWrite(rows[i], LOW);
    
}

}

void setColumns(byte b) { digitalWrite(COL_1, (~b >> 0) & 0x01); // Get the 1st bit: 10000000 digitalWrite(COL_2, (~b >> 1) & 0x01); // Get the 2nd bit: 01000000 digitalWrite(COL_3, (~b >> 2) & 0x01); // Get the 3rd bit: 00100000 digitalWrite(COL_4, (~b >> 3) & 0x01); // Get the 4th bit: 00010000 digitalWrite(COL_5, (~b >> 4) & 0x01); // Get the 5th bit: 00001000 digitalWrite(COL_6, (~b >> 5) & 0x01); // Get the 6th bit: 00000100 digitalWrite(COL_7, (~b >> 6) & 0x01); // Get the 7th bit: 00000010 digitalWrite(COL_8, (~b >> 7) & 0x01); // Get the 8th bit: 00000001 }