#include <LedControl.h>
int DIN =10;
int CS = 9;
int CLK = 8;

LedControl lc=LedControl(DIN,CLK,CS,0);
void setup() {
  // put your setup code here, to run once:
lc.shutdown (0,false);
lc.setIntensity(0,15);
lc.clearDisplay(0);

}

void loop() {
  // put your main code here, to run repeatedly:
byte smile[8]= {0x3C,0x42,0xA5,0x81,0xA5,0x99,0x42,0x3C};
printByte(smile);
//delay(500);
}