8 Digit 7-Segment Display Module - MAX7219

8 Digit 7-Segment Display Module - MAX7219

8자리의 숫자를 표시할 수 있는 디스플레이.

MAX7219 시리얼 드라이버가 장착.

MAX7219 드라이버의 SPI 인터페이스를 이용하여 디스플레이의 제어가 가능.

3.3V나 5V 사용가능.

Size : 82 * 15 * 12 mm(L*W*H)

Schematics Diagram

Doc

• Datasheet : MAX7219-MAX7221.pdf
• MAX7219 - 8 Digit LED Display Module Driver for ESP8266

• WIRING MAX7219 ON 8 BIT 7 SEGMENT DIGITAL LED TUBE DISPLAY

Wiring Guide

Code

/*   14CORE TEST CODE 8BIT LED TUBE http://www.14core.com pin 12 is connected to the DataIn pin 11 is connected to the CLK pin 10 is connected to LOAD   */   #include "LedControl.h" LedControl lc=LedControl(12,11,10,1);   void setup() { Serial1.begin(9600); // Initialize the MAX7219   Serial.write("14CORE TEST CODE FOR LED MAX7219 LED TUBE"); lc.shutdown(0,false); // To Enable the Display lc.setIntensity(0,15); // To set the brightness level (0 is min, 15 is max) lc.clearDisplay(0); // To Clear the display register //} }   void loop() {   // test afisare un anumit text lc.clearDisplay(0); // To Clear the display register   lc.setDigit(0,7,2, false); // To display the 2 first column on the left (column 7) lc.setDigit(0,6,5, true); // To display a 5 column 6 and decimal point lc.setDigit(0,5,4, false); // To display a 4 column 5 lc.setRow(0,4,B1001110); lc.setDigit(0,2,3, false); // To show the 5 on 2nd lc.setDigit(0,1,7, false); // To Place a 0 in the column 1 lc.setRow(0,0,B0110111);   delay(3000);   // fac alt text lc.clearDisplay(0); // Clear display register lc.setDigit(0,7,1, false); // To display a 1 at the first column on the left (column 7) lc.setDigit(0,6,2, false); // To display a 2 column 6 and decimal point lc.setRow(0,5,B00000001); lc.setDigit(0,4,4, false); // display a "4" in column 4 lc.setDigit(0,3,2, false); // display a "2" in column 3 lc.setRow(0,2,B00000001); lc.setDigit(0,1,3, false); // To display a 3 column 1 lc.setDigit(0,0,6, false); // 6 show a first hand column, column 0   delay(3000);   // fac inca un text lc.clearDisplay(0); // To Clear the display register lc.setRow(0,6,B01100010); // "n" lc.setRow(0,5,B00100000); // "i" lc.setRow(0,4,B01110011); // "q" lc.setRow(0,3,B00000001);   lc.setRow(0,2,B01000010); // "r" lc.setRow(0,1,B01100011); // "o"     delay(3000); // Delay 3 Seconds }

LedControl.h Code Library : GetHub , 

LedControl-Max72XX-Code-Library.zip