MAX7219 Digital Tube Display Module Control Module

The MAX7219 Digital Tube Display Module Control Module has integrates a convenient four-wire serial interface that can be used to all micro-controller, microprocessors. Each on-chip data can be addressed in the update without rewriting all display, and also allows you to select each data encoding or no-coding.

It is an integrated serial input/output common-cathode display drivers, which connects the microprocessor and 8-bit 7-segment digital LED display, you can also connect a bar graph display or 64 separate LED. Includes an on-chip type B BCD encoders, multi-channel scanning loop, segment word driver, but also an 8×8 static RAM that stores each data. Only one external register is used to set the current of each LED segment.

A convenient four-wire serial interface can connect all common microprocessors. Each data can be addressed in the update without rewriting all displays. MAX7219 also allows the user to select each data encoding or no coding.

The entire device includes a 150μA low-power shutdown mode, analog and digital brightness control, a scan-limit register allows the user to display 1-8 bit data, there is an all-LED light detection mode.

Wiring instructions:

1. VCC to 5V,
2. GND to GND,
3. DIN to P00,
4. CLK to P02,
5. CS to P01

Note: This Product is available in two different variant of IC (MAXIM MAX7219 and GC7219) we will ship it randomly.

Sketch Code:

/*

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
}

Specifications and Features:

1. 0.36-inch Common cathode
2. Only need three IO ports can drive 8-bit digital tube
3. The module compatible with 5V / 3.3V microcontroller (51 / AVR / STM3) and Raspberry Pi
4. Only need three IO ports can drive 8-bit digital tube
5. The module compatible with 5V / 3.3V microcontroller (51 / AVR / STM32…)
6. PCV board four corners of the fixed copper stud, which can effectively precent short circuit accidents happen
7. Board Dimensions (LxWxH)mm: 83 x 15 x 17
8. Weight: 20g.

Package Includes:

1 x MAX7219 Digital Tube Display Module Control Module.