Está hecho con Arduino, un array de pares darlington (ULN2003A) y un shift register 74HC595. Solo falta montarlo en una placa, soldarlo con unos cuantos mas shift registers y tendremos una marquesina. Esuqema de conexion de la matriz de 8×8:
Las resistencias que hay entre los integrados y la matriz, a mi me ha funcionado con resistencias de entre 0,5K Ohm y 1k Ohm
El codigo está aquí.
// 8*8 LED matrix with ULN2003A & 74HC595
// Made by Vadim S.
//On 25.06.2009
// Mod by Alwar
//On 13.06.2010
///Pin connected to ST_CP of 74HC595
int latchPin = 8;
//Pin connected to SH_CP of 74HC595
int clockPin = 12;
////Pin connected to DS of 74HC595
int dataPin = 11;
int x;
int y;
// here the definion of all the letter(big ans small) and numbers
#define A {B00111100,B01000010,B01000010,B01000010,B01111110,B01000010,B01000010,B01000010}
#define B {B01111100,B01000010,B01000010,B01111100,B01000010,B01000010,B01000010,B01111100}
#define C {B00111110,B01000000,B01000000,B01000000,B01000000,B01000000,B01000000,B00111110}
#define D {B01111100,B01000010,B01000010,B01000010,B01000010,B01000010,B01000010,B01111100}
#define E {B01111110,B01000000,B01000000,B01111100,B01000000,B01000000,B01000000,B01111110}
#define F {B01111110,B01000000,B01000000,B01111100,B01000000,B01000000,B01000000,B01000000}
#define G {B00111100,B01000010,B01000010,B01000000,B01000111,B01000010,B01000010,B00111100}
#define H {B01000010,B01000010,B01000010,B01111110,B01000010,B01000010,B01000010,B01000010}
#define I {B00111000,B00010000,B00010000,B00010000,B00010000,B00010000,B00010000,B00111000}
#define J {B00011100,B00001000,B00001000,B00001000,B00001000,B01001000,B01001000,B00110000}
#define K {B01000100,B01001000,B01010000,B01100000,B01010000,B01001000,B01000100,B01000010}
#define L {B01000000,B01000000,B01000000,B01000000,B01000000,B01000000,B01000000,B01111110}
#define M {B01000100,B10101010,B10010010,B10010010,B10000010,B10000010,B10000010,B10000010}
#define N {B01000010,B01100010,B01010010,B01001010,B01001010,B01001010,B01000110,B01000010}
#define O {B00111100,B01000010,B01000010,B01000010,B01000010,B01000010,B01000010,B00111100}
#define P {B00111100,B01000010,B01000010,B01000010,B01111100,B01000000,B01000000,B01000000}
#define Q {B00111100,B01000010,B01000010,B01000010,B01000010,B01000110,B00111110,B00000001}
#define R {B00111100,B01000010,B01000010,B01000010,B01111100,B01000100,B01000010,B01000010}
#define S {B00111100,B01000010,B01000000,B01000000,B00111100,B00000010,B01000010,B00111100}
#define T {B11111110,B00010000,B00010000,B00010000,B00010000,B00010000,B00010000,B00010000}
#define U {B01000010,B01000010,B01000010,B01000010,B01000010,B01000010,B01000010,B00111100}
#define V {B01000010,B01000010,B01000010,B01000010,B01000010,B01000010,B00100100,B00011000}
#define W {B10000010,B10000010,B10000010,B10000010,B10010010,B10010010,B10101010,B01000100}
#define X {B01000010,B01000010,B00100100,B00011000,B00011000,B00100100,B01000010,B01000010}
#define Y {B10000010,B01000100,B00101000,B00010000,B00010000,B00010000,B00010000,B00010000}
#define Z {B01111110,B00000010,B00000100,B00001000,B00010000,B00100000,B01000000,B01111110}
#define lit_a {B00000000,B00000000,B00000000,B00111000,B01000100,B01000101,B01000101,B00111010}
#define lit_b {B00000000,B00100000,B00100000,B00100000,B00111100,B00100010,B00100010,B00111100}
#define lit_c {B00000000,B00000000,B00000000,B00111100,B01000000,B01000000,B01000000,B00111100}
#define lit_d {B00000000,B00000100,B00000100,B00000100,B00111100,B01000100,B01000100,B00111100}
#define lit_e {B00000000,B00000000,B00111000,B01000100,B01000100,B01111000,B01000000,B00111100}
#define lit_f {B00011000,B00100100,B00100000,B00100000,B01110000,B00100000,B00100000,B00100000}
#define lit_g {B00011100,B00100010,B00100010,B00011110,B00000010,B00000010,B00010010,B00001100}
#define lit_h {B01000000,B01000000,B01000000,B01000000,B01111000,B01000100,B01000100,B01000100}
#define lit_i {B00000000,B00010000,B00000000,B00010000,B00010000,B00010000,B00010000,B00010000}
#define lit_j {B00000000,B00010000,B00000000,B00010000,B00010000,B00010000,B01010000,B00110000}
#define lit_k {B00000000,B00000000,B01001000,B01010000,B01100000,B01100000,B01010000,B01001000}
#define lit_l {B01000000,B01000000,B01000000,B01000000,B01000000,B01000000,B01000000,B01000000}
#define lit_m {B00000000,B00000000,B00110100,B01001010,B01001010,B01001010,B01001010,B01001010}
#define lit_n {B00000000,B00000000,B01111000,B01000100,B01000100,B01000100,B01000100,B01000100}
#define lit_o {B00000000,B00000000,B00000000,B00011100,B00100010,B00100010,B00100010,B00011100}
#define lit_p {B00000000,B00000000,B00011100,B00100010,B00100010,B00111100,B00100000,B00100000}
#define lit_q {B00000000,B00000000,B00111000,B01000100,B01000100,B00111100,B00000100,B00000100}
#define lit_r {B00000000,B00000000,B00111000,B01000000,B01000000,B01000000,B01000000,B01000000}
#define lit_s {B00000000,B00111000,B01000100,B01000000,B00111000,B00000100,B01000100,B00111000}
#define lit_t {B00100000,B00100000,B00100000,B01111000,B00100000,B00100000,B00100010,B00011100}
#define lit_u {B00000000,B00000000,B00000000,B01000100,B01000100,B01000100,B01000100,B00111000}
#define lit_v {B00000000,B00000000,B01000100,B01000100,B01000100,B01000100,B00101000,B00010000}
#define lit_w {B00000000,B00000000,B00000000,B01000100,B01000100,B01010100,B01010100,B00101000}
#define lit_x {B00000000,B00000000,B00000000,B00000000,B00100100,B00011000,B00011000,B00100100}
#define lit_y {B00000000,B01000100,B01000100,B00111100,B00000100,B00000100,B00000100,B00111000}
#define lit_z {B00000000,B00000000,B00000000,B01111100,B00001000,B00010000,B00100000,B01111100}
#define space {B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000}
#define num_0 {B00111100,B01000110,B01001010,B01001010,B01001010,B01010010,B01100010,B00111100}
#define num_1 {B00001000,B00011000,B00001000,B00001000,B00001000,B00001000,B00001000,B00011100}
#define num_2 {B00111100,B01000010,B00000100,B00001000,B00010000,B00100000,B01000000,B01111110}
#define num_3 {B01111110,B00000010,B00000010,B00011100,B00000010,B00000010,B01000010,B00111100}
#define num_4 {B00000100,B00001100,B00010100,B00100100,B01000100,B01111110,B00000100,B00000100}
#define num_5 {B01111110,B01000000,B01000000,B00111100,B00000010,B00000010,B00000010,B01111100}
#define num_6 {B00111100,B01000000,B01000000,B01111100,B01000010,B01000010,B01000010,B00111100}
#define num_7 {B01111110,B00000010,B00000100,B00001000,B00010000,B00010000,B00010000,B00010000}
#define num_8 {B00111100,B01000010,B01000010,B00111100,B01000010,B01000010,B01000010,B00111100}
#define num_9 {B00111100,B01000010,B01000010,B01000010,B00111110,B00000010,B00000010,B00111100}
#define times {B00000000,B01000010,B00100100,B00011000,B00011000,B00100100,B01000010,B00000000}
// Signals for shift register, go over al cols, one each time
byte barrido[8] = { B00000001,B00000010,B00000100,B00001000,B00010000,B00100000,B01000000,B10000000 };
const int numPatterns = 15;//this is the number of patterns you want to display
// the patterns order
byte patterns[numPatterns][8]={space,M,A,D,E,space,B,Y,space,A,L,W,A,R,space};
void setup(){
// this is a commed that makes pins 0-7 outputs(see more on the arduino site)
DDRD=B11111111;
pinMode(latchPin, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);
}
// int loop acts like a delay, it take 8 mSecands to scan all of the rows so int
// loops = 15 is a good time for it
void display_pattern(int loops)
{
for(x=0;x
{ // loop over the patterns
for (int z=0;z<8;z++)
{ //scrolls one bite at a time
for(int t=0;t
{// the delay we get with loops
for(y=0;y<8;y++)
{
// loops over the array of bytes
byte temp = patterns[x][y];
byte temp_2=patterns[x+1][y];
//writes digital outputs, Z is for how much bites it need to scroll
PORTD = (temp<>7-z);
delayMicroseconds(800);// the time every row is one
PORTD=B00000000;// all pins are low, fixes the ghosting effect
digitalWrite(latchPin, LOW);
shiftOut(dataPin, clockPin, LSBFIRST, barrido[y]);
//return the latch pin high to signal chip that it
//no longer needs to listen for information
digitalWrite(latchPin, HIGH);
}
}
}
}
}
void loop(){
// calls for the display_pattern function and says that int loop = 15
// (if you do more loop the pattern whould scrrol slower).
display_pattern(15);
}
Buena ALWAR!!!! eso tienes que enseñarmelo personalmente XD.
Esperate que junte las otras 19 matrices y entonces te lo enseño xD
A bueno pues entonces será para después de las olimpiadas cuando lo pueda ver porque conociéndote…. XD.