8-Digit 7 Segment Display MAX7219 Merah

contoh program : 

#include "LedControl.h"
// Arduino Pin 7 to DIN, 6 to Clk, 5 to LOAD, no.of devices is 1
LedControl lc=LedControl(7,6,5,1);
void setup()
{
// Initialize the MAX7219 device
lc.shutdown(0,false); // Enable display
lc.setIntensity(0,10); // Set brightness level (0 is min, 15 is max)
lc.clearDisplay(0); // Clear display register
}
void loop()
{
for(int i=0; i<8; i++){
lc.setDigit(0,i,i+1,false);
} 
delay(1000);
}

dokumentasi : http://embedded-lab.com/blog/introducing-a-new-serial-spi-8-digit-seven-segment-led-display-module-using-max7219/