int latchPin = 12;          // Pin connected to ST_CP of 74HC595（Pin12）
int clockPin = 13;          // Pin connected to SH_CP of 74HC595（Pin11）
int dataPin = 11;           // Pin connected to DS of 74HC595（Pin14）
int LEDPin[] = {2, 3, 4, 5, 6, 7, 8, 9};    // column pin (cathode) of LED Matrix
  
 
// Define the pattern data for a smiling face
const int smilingFace[] = {   0x1C, 0x22, 0x51, 0x45, 0x45, 0x51, 0x22, 0x1C }; // Define the data of numbers and letters, and save them in flash area const 
const int data[] PROGMEM = {   0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x21, 0x7F, 0x01, 0x00, 0x00, 0x00,
 0x00, 0x00, 0x23, 0x45, 0x49, 0x31, 0x00, 0x00,
 0x00, 0x00, 0x22, 0x49, 0x49, 0x36, 0x00, 0x00,
 0x00, 0x00, 0x0E, 0x32, 0x7F, 0x02, 0x00, 0x00,
 0x00, 0x00, 0x79, 0x49, 0x49, 0x46, 0x00, 0x00,
 0x00, 0x00, 0x3E, 0x49, 0x49, 0x26, 0x00, 0x00,
 0x00, 0x00, 0x60, 0x47, 0x48, 0x70, 0x00, 0x00,
 0x00, 0x00, 0x36, 0x49, 0x49, 0x36, 0x00, 0x00,
 0x00, 0x00, 0x32, 0x49, 0x49, 0x3E, 0x00, 0x00,
 0x00, 0x00, 0x3E, 0x41, 0x41, 0x3E, 0x00, 0x00,
 0x00, 0x00, 0x3F, 0x44, 0x44, 0x3F, 0x00, 0x00, 
 0x00, 0x00, 0x7F, 0x49, 0x49, 0x36, 0x00, 0x00, 
 0x00, 0x00, 0x3E, 0x41, 0x41, 0x22, 0x00, 0x00, 
 0x00, 0x00, 0x7F, 0x41, 0x41, 0x3E, 0x00, 0x00, 
 0x00, 0x00, 0x7F, 0x49, 0x49, 0x41, 0x00, 0x00,
 0x00, 0x00, 0x7F, 0x48, 0x48, 0x40, 0x00, 0x00   }; 
 
void setup() {   // set pins to output
  pinMode(latchPin, OUTPUT);  
  pinMode(clockPin, OUTPUT);
  pinMode(dataPin, OUTPUT); 
  for (int i = 0; i < 8; i++) {     pinMode(LEDPin[i], OUTPUT);   }
}

 
void loop() {   // Define a one-byte variable (8 bits) which is used to represent the selected state of 8 columns.
  int cols;   // Display the static smiling pattern 
  for (int j = 0; j < 500; j++ ) {  // repeat 500 times  
    cols = 0x01; // Assign 0x01(binary 00000001) to the variable, which represents the first column is selected.    
    for (int i = 0; i < 8; i++) {   // display 8 column data by scanning   
      matrixColsVal(cols);          // select this column   
      matrixRowsVal(smilingFace[i]);// display the data in this column     
      delay(1);                     // display them for a period of time   
      matrixRowsVal(0x00);          // clear the data of this column      
      cols <<= 1;                   // shift "cols" 1 bit left to select the next column     
      }   }   // Display the dynamic patterns of numbers and letters 
      for (int i = 0; i < 128; i++) { // "space，0-9，A-F"16 letters ,each letter hold 8 columns, total 136 columns. Firstly, display space ,then we need shift 128 times（136-8）     for (int k = 0; k < 10; k++) {      // repeat image of each frame 10 times.       cols = 0x01;      // Assign binary 00000001. Means the first column is selected.       for (int j = i; j < 8 + i; j++) { // display image of each frame         matrixColsVal(cols);            // select this column         matrixRowsVal(pgm_read_word_near(data + j));// display the data in this column         delay(1);                       // display them for a period of time         matrixRowsVal(0x00);            // close the data of this column         cols <<= 1;                 // shift "cols" 1 bit left to select the next column       }     }   } } 
    }
  }
}
 
void matrixRowsVal(int value) {   // make latchPin output low level   
  digitalWrite(latchPin, LOW);   // Send serial data to 74HC595  
  shiftOut(dataPin, clockPin, LSBFIRST, value); // make latchPin output high level, then 74HC595 will update the data to parallel output  
  digitalWrite(latchPin, HIGH); }
void matrixColsVal(byte value) {   byte cols = 0x01;   // Output the column data to the corresponding port.
for (int i = 0; i < 8; i++) {     digitalWrite(LEDPin[i], ((value & cols) == cols) ? LOW : HIGH);     cols <<= 1;   } }