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2x MODULO DOT MATRIX DISPLAY 8x8

a MATRICE LED ROSSI con MAX7219

Comunicazione seriale a 3 fili SERIALE

Collegabili in cascata all'infinito

Per ARDUINO / Arm/ Raspberry ecc.


( 2 x pieces )


Per realizzare display alfanumerici o pannelli grafici per effetti speciali


Già montati come in foto, pronti per l'uso.


( Cavetti 'DUPONT' M/F o F/F per i collegamenti disponibili nel nostro negozio nella categoria ' CONNETTORI- CAVETTI ' )


Data sheet:

HTTP://www.maximintegrated.com/en/products/power/display-power-control/MAX7219.html

Arduino playground :

HTTP://playground.arduino.cc/LEDMatrix/Max7219

Esempi utilizzo:

HTTP://www.arduinoecia.com.br/2014/04/Painel-de-led-max7219.html

HTTP://brainy-bits.com/tutorials/scroll-text-using-the-max7219-led-dot-matrix



Pins lato ingresso:
  • VCC : 5V
  • GND : GND
  • DIN : Serial Data in
  • CS : Chip Select ( in)
  • CLK : Clock ( in)

Pins lato uscita:
  • VCC : 5V
  • GND : GND
  • DOUT : Serial Data Out
  • CS : Chip Select ( in)
  • CLK : Clock ( in)

Collegandoli in cascata è possibile realizzare display con il numero desiderato di caratteri.

Features:
Size:50mmx32mmx15mm/1.95"x1.25"x0.58"(inch) (approx)

Weight: 18 gr

Module operating voltage: 5V

A single module can drive an 8 x 8 common cathode

With four screws hole, aperture 3mm, by using our M3 Tongzhu fixed.

Module with input and output interfaces, supports multiple modules cascade.

Note:

The module left as an input port to the output port on the right.
The control of a single module, simply input port to the CPU.
Multiple modules cascade input termination CPU, 2 output termination module, a module of the input of the input terminal, the output terminal of the first two modules

of the first three modules, and so on ... 51 MCU, for example:
VCC → 5V
GND → GND
DIN → P22
CS → P21
CLK → P20


ARDUINO TEST EXAMPLE code :

unsigned char i;
unsigned char j;
/*Port Definitions*/
int Max7219_pinCLK = 10;
int Max7219_pinCS = 9;
int Max7219_pinDIN = 8;

unsigned char disp1[10][8]={
{B00000000,B00111100,B01100110,B01100110,B01101110,B01110110,B01100110,B00111100},//0
{B00000000,B00001000,B00011000,B00111000,B00011000,B00011000,B00011000,B00111100},//1
{B00000000,B00111100,B01100110,B00000110,B00001100,B00011000,B00110000,B01111110},//2
{B00000000,B00111100,B01100110,B00000110,B00001100,B00000110,B01100110,B00111100},//3
{B00000000,B00100000,B01100000,B01101100,B01101100,B01111110,B00001100,B00001100},//4
{B00000000,B01111110,B01100000,B01100000,B01111100,B00000110,B01100110,B00111100},//5
{B00000000,B00111100,B01100110,B01100000,B01111100,B01100110,B01100110,B00111100},//6
{B00000000,B01111110,B00000110,B00000110,B00001100,B00011000,B00011000,B00011000},//7
{B00000000,B00111100,B01100110,B01100110,B00111100,B01100110,B01100110,B00111100},//8
{B00000000,B00111100,B01100110,B01100110,B00111110,B00000110,B01100110,B00111100},//9
};

void Write_Max7219_byte(unsigned char DATA)
{
unsigned char i;
digitalWrite(Max7219_pinCS,LOW);
for(i=8;i>=1;i--)
{
digitalWrite(Max7219_pinCLK,LOW);
digitalWrite(Max7219_pinDIN,DATA&0x80);// Extracting a bit data
DATA = DATA<<1;
digitalWrite(Max7219_pinCLK,HIGH);
}
}

void Write_Max7219(unsigned char address,unsigned char dat)
{
digitalWrite(Max7219_pinCS,LOW);
Write_Max7219_byte(address); //address,code of LED
Write_Max7219_byte(dat); //data,figure on LED
digitalWrite(Max7219_pinCS,HIGH);
}

void Init_MAX7219(void)
{
Write_Max7219(0x09, 0x00); //decodifica: BCD
Write_Max7219(0x0a, 0x06); //luminosità
Write_Max7219(0x0b, 0x07); //limite scan;8 LEDs
Write_Max7219(0x0c, 0x01); //power-down mode:0,normal mode:1
Write_Max7219(0x0f, 0x00); //test display:1;EOT,display:0
}

void setup()
{
pinMode(Max7219_pinCLK,OUTPUT);
pinMode(Max7219_pinCS,OUTPUT);
pinMode(Max7219_pinDIN,OUTPUT);
delay(50);
Init_MAX7219();
}

void loop()
{
for(j=0;j<10;j++)
{
for(i=1;i<9;i++)
Write_Max7219(i,disp1[j][i-1]);
delay(700);
}
}


Peso kit : 42gr