I am a newby with arduino and i am trying to build a 6x12 scrolling text matrix. I used the code and instructions from here http://www.instructables.com/id/810-LED-Matrix-with-4017/. I just made a few changes experimenting to see if I could get the 8x10 code it to work on a 6x12.
here is a video of what it is doing. I have it programmed to show 2 dots scrolling from right to left, but the coding or wiring is off so I cant get it to work.
it is wired from right to left on the perforboard, to pins 0-7, 10-13. pins 8 and 9 go to the 4017.
here is the code that i am using, again I didn't write the code, I have PTSD and I keep forgetting what I have learned.
// 10*8 LED matrix with 4017 IC
// Made by Vadim S.
//On 25.06.2009
int clock = 9;// goes to the clock pin on the 4017 IC
int reset = 8;//goes to the reset pin on the 4017 IC
int RED = 10;//
int BLUE = 11;//
int GREEN = 12;//
int BLACK = 13;//
//x,y for the loop
int x;
int y;
// here the definion of all the letter(big ans small) and numbers
#define BA {B01110000,B10001000,B10001000,B11111000,B10001000,B10001000}
#define BB {B11110000,B10001000,B10001000,B11110000,B10001000,B11111000}
#define BC {B11111000,B10000000,B10000000,B10000000,B10000000,B11111000}
#define BD {B11110000,B10001000,B10001000,B10001000,B10001000,B11110000}
#define BE {B11111000,B10000000,B10000000,B11110000,B10000000,B11111000}
#define BF {B11111000,B10000000,B10000000,B11110000,B10000000,B10000000}
#define BG {B01110000,B10001000,B10000000,B10011000,B10001000,B01110000}
#define BH {B10001000,B10001000,B11111000,B10001000,B10001000,B10001000}
#define BI {B11111000,B00100000,B00100000,B00100000,B00100000,B11111000}
#define BJ {B00111000,B00010000,B00010000,B00010000,B10010000,B01100000}
#define BM {B10001000,B11011000,B10101000,B10101000,B10001000,B10001000}
#define BN {B10001000,B11001000,B10101000,B10101000,B10011000,B10001000}
#define BL {B10000000,B10000000,B10000000,B10000000,B10000000,B11111000}
#define BO {B01110000,B10001000,B10001000,B10001000,B10001000,B01110000}
#define BP {B11110000,B10001000,B10001000,B11110000,B10000000,B10000000}
#define BQ {B01110000,B10001000,B10101000,B10011000,B01111000,B00001000}
#define BR {B11110000,B10001000,B10001000,B11110000,B10001000,B10001000}
#define BS {B01110000,B10001000,B01100000,B00010000,B10001000,B01110000}
#define BK {B10001000,B10010000,B11100000,B11100000,B10010000,B10001000}
#define BT {B11111000,B00100000,B00100000,B00100000,B00100000,B00100000}
#define BU {B10001000,B10001000,B10001000,B10001000,B10001000,B01110000}
#define BV {B10001000,B10001000,B10001000,B10001000,B01010000,B00100000}
#define BW {B10001000,B10001000,B10101000,B10101000,B10101000,B01010000}
#define BX {B10001000,B01010000,B00100000,B00100000,B01010000,B10001000}
#define BY {B10001000,B01010000,B00100000,B00100000,B00100000,B00100000}
#define BZ {B11111000,B00001000,B00110000,B01100000,B10000000,B11111000}
#define LA{B00000000,B01110000,B00001000,B01111000,B10001000,B01111000}
#define LB{B10000000,B10000000,B10110000,B11001000,B10001000,B11110000}
#define LC{B00000000,B01110000,B10000000,B10000000,B10001000,B01110000}
#define LD{B00001000,B00001000,B01111000,B10001000,B10001000,B01111000}
#define LE{B00000000,B01110000,B10001000,B11111000,B10000000,B01110000}
#define LF{B00110000,B01001000,B01000000,B11100000,B01000000,B01000000}
#define LG{B00000000,B01111000,B10001000,B01111000,B00001000,B01110000}
#define LH{B10000000,B10000000,B10110000,B11001000,B10001000,B10001000}
#define LI{B00100000,B00000000,B01100000,B00100000,B00100000,B01111000}
#define LJ{B00010000,B00000000,B00111000,B00010000,B10010000,B01100000}
#define LK{B10000000,B10010000,B10100000,B11000000,B10100000,B10010000}
#define LL{B01100000,B00100000,B00100000,B00100000,B00100000,B01111000}
#define LM{B00000000,B00000000,B11010000,B10101000,B10101000,B10001000}
#define LN{B00000000,B00000000,B10110000,B11001000,B10001000,B10001000}
#define LO{B00000000,B01110000,B10001000,B10001000,B10001000,B01110000}
#define LP{B00000000,B11110000,B10001000,B11110000,B10000000,B10000000}
#define LQ{B00000000,B01101000,B10011000,B01111000,B00001000,B00001000}
#define LR{B00000000,B00000000,B10110000,B11001000,B10000000,B10000000}
#define LS{B00000000,B01110000,B10000000,B01110000,B00001000,B11110000}
#define LT{B01000000,B01000000,B11100000,B01000000,B01001000,B00110000}
#define LU{B00000000,B00000000,B10001000,B10001000,B10011000,B01101000}
#define LV{B00000000,B00000000,B10001000,B10001000,B01010000,B00100000}
#define LW{B00000000,B00000000,B10001000,B10101000,B10101000,B01010000}
#define LX{B00000000,B10001000,B01010000,B00100000,B01010000,B10001000}
#define LY{B00000000,B10001000,B10001000,B01111000,B00001000,B01110000}
#define LZ{B00000000,B11111000,B00010000,B00100000,B01000000,B11111000}
#define SPACE{B00000000,B00000000,B00000000,B00000000,B00000000,B00000000}
#define NUM0{B01110000,B10011000,B10101000,B10101000,B11001000,B01110000}
#define NUM1{B00100000,B01100000,B10100000,B00100000,B00100000,B01110000}
#define NUM2{B01110000,B10001000,B00001000,B01110000,B10000000,B11111000}
#define NUM3{B11110000,B00001000,B00001000,B01111000,B00001000,B11110000}
#define NUM4{B10001000,B10001000,B10001000,B11111000,B00001000,B00001000}
#define NUM5{B11111000,B10000000,B11110000,B00001000,B10001000,B01110000}
#define NUM6{B11111000,B10000000,B11111000,B10001000,B10001000,B11111000}
#define NUM7{B11111000,B00001000,B00001000,B01111000,B00001000,B00001000}
#define NUM8{B11111000,B10001000,B11111000,B10001000,B10001000,B11111000}
#define NUM9{B11111000,B10001000,B11111000,B00001000,B00001000,B11111000}
#define DEVIDE{B00001000,B00010000,B00100000,B00100000,B01000000,B10000000}
#define TWODOTS{B01100000,B01100000,B00000000,B00000000,B01100000,B01100000}
#define DOT{B00000000,B00000000,B00111000,B00111000,B00000000,B0000000}
#define COMA{B00000000,B00000000,B00000000,B00110000,B00110000,B01100000}
#define LINE{B00000000,B00000000,B11111000,B11111000,B00000000,B00000000}
#define QUASTION{B01110000,B10001000,B00010000,B00100000,B00000000,B00100000}
#define MARK{B00100000,B01110000,B01110000,B00100000,B00000000,B00100000}
const int numPatterns = 16;//this is the number of patterns you want to display
byte patterns[numPatterns][10]={SPACE,TWODOTS,SPACE,TWODOTS,};// the patterns order
void setup(){
DDRD=B11111111; // this is a commed that makes pins 0-7 outputs(see more on the arduino site)
//simple stuff here
pinMode(clock,OUTPUT);
pinMode(reset,OUTPUT);
pinMode (RED,OUTPUT);
pinMode (BLUE,OUTPUT);
pinMode (GREEN,OUTPUT);
pinMode (BLACK,OUTPUT);
//reseting the 4017 IC, you have to do this
digitalWrite(reset,HIGH);
delayMicroseconds(5);
digitalWrite(reset,LOW);
}
void display_pattern(int loops)//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
{
for(x=0;x<numPatterns-1;x++){ // loop over the patterns
for (int z=0;z<6;z++){ //scrolls one bite at a time
for(int t=0;t<loops;t++){// the delay we get with loops
for(y=0;y<10;y++){// loops over the array of bytes
byte temp = patterns[x][y];
byte temp_2=patterns[x+1][y];
byte temp_3=patterns[x][y];
PORTD = (temp<<z)+(temp_2>>7-z);//writes digital outputs, Z is for how much bites it need to scroll
PORTB = temp_2>>4-z;//writes digital outputs, Z is for how much bites it need to scroll
delayMicroseconds(800);// the time every row is one
PORTD=B00000000;// all pins are low, fixes the ghosting effect // telles the 4017 IC to go to the next row
PORTB=B00000000;// all pins are low, fixes the ghosting effect // telles the 4017 IC to go to the next row// telles the 4017 IC to go to the next row
digitalWrite(clock,HIGH);
delayMicroseconds(5);
digitalWrite(clock,LOW);
}
}
}
}
}
void loop(){
display_pattern(20);// calls for the display_pattern function and says that int loop = 15(if you do more loop the pattern whould scrrol slower).
}