16x16 LED Display Module

Description

This 16x16 Display module uses the 74HC138 and 74HC595 to decode and drive 4 8x8 LED modules to create an even bigger 16x16 LED display module. Detailed Demos based on Arduino help you understanding and learning how to use this module and thus to integrate it to your own applications。

Model:DLD1616LED

Features

• 16x16 LED Display
• Color: Red
• Support the 128x64 LCD Display
• Cascadable

Usage

1.Hardware connection

2.Connect the board to PC using USB cable.

3.Copy the below code to you new skecth,then upload it.

#include <Arduino.h>

//IO    
#define LEDARRAY_D 2
#define LEDARRAY_C 3
#define LEDARRAY_B 4
#define LEDARRAY_A 5
#define LEDARRAY_G 6
#define LEDARRAY_DI 7
#define LEDARRAY_CLK 8
#define LEDARRAY_LAT 9


unsigned char Display_Buffer[2];
const unsigned char  Word1[1][32] = 
{

0xFF,0xFF,0xFF,0xE1,0xC0,0x80,0x80,0x80,0xC0,0xE0,0xF0,0xF8,0xFC,0xFE,0xFF,0xFF,
0xFF,0xFF,0xFF,0x87,0x03,0x01,0x01,0x01,0x03,0x07,0x0F,0x1F,0x3F,0x7F,0xFF,0xFF,//heart-shaped

};

const unsigned char  Init_Display[1][32] = 
{
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
	0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
};

void setup()
{
	pinMode(LEDARRAY_D, OUTPUT); 
	pinMode(LEDARRAY_C, OUTPUT);
	pinMode(LEDARRAY_B, OUTPUT);
	pinMode(LEDARRAY_A, OUTPUT);
	pinMode(LEDARRAY_G, OUTPUT);
	pinMode(LEDARRAY_DI, OUTPUT);
	pinMode(LEDARRAY_CLK, OUTPUT);
	pinMode(LEDARRAY_LAT, OUTPUT);

	Display(Init_Display);
}

void loop()
{
	Display(Word1);	
}



//************************************************************
//num is number  dat[][32] is the name of the font
//*************************************************************
void Display(const unsigned char dat[][32])					
{
	unsigned char i;

	for( i = 0 ; i < 16 ; i++ )
	{
		digitalWrite(LEDARRAY_G, HIGH);		
		
		Display_Buffer[0] = dat[0][i];		
		Display_Buffer[1] = dat[0][i+16];

		Send(Display_Buffer[1]);
		Send(Display_Buffer[0]);

		digitalWrite(LEDARRAY_LAT, HIGH);					
	
		digitalWrite(LEDARRAY_LAT, LOW);
		delayMicroseconds(1);

		Scan_Line(i);							

		digitalWrite(LEDARRAY_G, LOW);
		
		delayMicroseconds(100);;							
	}	
}


void Scan_Line( unsigned char m)
{	
	switch(m)
	{
		case 0:			
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, LOW); 					
			break;
		case 1:					
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, HIGH); 		
			break;
		case 2:					
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, LOW); 		
			break;
		case 3:					
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, HIGH); 		
			break;
		case 4:
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, LOW); 		
			break;
		case 5:
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, HIGH); 		
			break;
		case 6:
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, LOW); 		
			break;
		case 7:
			digitalWrite(LEDARRAY_D, LOW);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, HIGH); 		
			break;
		case 8:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, LOW); 		
			break;
		case 9:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, HIGH); 		
			break;	
		case 10:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, LOW); 		
			break;
		case 11:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, LOW);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, HIGH); 		
			break;
		case 12:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, LOW); 		
			break;
		case 13:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, LOW);digitalWrite(LEDARRAY_A, HIGH); 		
			break;
		case 14:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, LOW); 		
			break;
		case 15:
			digitalWrite(LEDARRAY_D, HIGH);digitalWrite(LEDARRAY_C, HIGH);digitalWrite(LEDARRAY_B, HIGH);digitalWrite(LEDARRAY_A, HIGH); 		
			break;
		default : break;	
	}
}


void Send( unsigned char dat)
{
	unsigned char i;
	digitalWrite(LEDARRAY_CLK, LOW);
	delayMicroseconds(1);;	
	digitalWrite(LEDARRAY_LAT, LOW);
	delayMicroseconds(1);;

	for( i = 0 ; i < 8 ; i++ )
	{
		if( dat&0x01 )
		{
			digitalWrite(LEDARRAY_DI, HIGH);	
		}
		else
		{
			digitalWrite(LEDARRAY_DI, LOW);
		}

		delayMicroseconds(1);
		digitalWrite(LEDARRAY_CLK, HIGH);				
			delayMicroseconds(1);
		digitalWrite(LEDARRAY_CLK, LOW);
			delayMicroseconds(1);		
		dat >>= 1;
			
	}			
}

4.Upload the Code,then you shoule see the 16x16 LED display.

Resource

• 16x_16_LED library