8*8点阵模块
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产品简介
8*8点阵模块是采用2片74HC595芯片驱动红色8X8点阵管，只需要使用控制器3路IO口，根据点阵管动态扫描原理进行显示，可以显示多种图案。
规格参数
- 供电电压：DC5V
- 使用芯片：74HC595
- 模块尺寸：32.5*32.5*14.7MM（长*宽*高）
- 模块重量：10.6g
引脚说明
- 1. VCC -- Vcc(电源+5V）
- 2. GND -- Gnd(地)
- 3. SER -- 串行移位输入
- 4. RCK -- 存储寄存器的时序输入
- 5. SRCK -- 移位寄存器的时序输入
应用示例
电路连接示意图
| 点阵模块 | Arduino UNO |
| VCC | +5V |
| GND | GND |
| SER | D10 |
| RCK | D11 |
| SRCK | D12 |
示例代码
示例一：基本显示
/**************************************************
* Face
* ( 8x8 Led Dot Matrix with two 74HC595 on Arduino)
*
* by YFROBOT
***************************************************/
#include "TimerOne.h"
#define ROW_DATA ((row[0]<<7)|(row[1]<<6)|(row[2]<<5)|(row[3]<<4)|(row[4]<<3)|(row[5]<<2)|(row[6]<<1)|(row[7]<<0))
#define COL_DATA ((col[0]<<7)|(col[1]<<6)|(col[2]<<5)|(col[3]<<4)|(col[4]<<3)|(col[5]<<2)|(col[6]<<1)|(col[7]<<0))
//Pin connected to DS of 74HC595
int SER = 10;
//Pin connected to ST_CP of 74HC595
int RCK = 11;
//Pin connected to SH_CP of 74HC595
int SRCK = 12;
int row[8]={
0, 0, 0, 0, 0, 0, 0, 0};
int col[8]={
0, 0, 0, 0, 0, 0, 0, 0};
byte screen[8] = {
0, 0, 0, 0, 0, 0, 0, 0};
volatile byte screenRow = 0;
volatile byte screenCol = 0;
void setup() {
Timer1.initialize(100);
pinMode(RCK, OUTPUT);
pinMode(SRCK, OUTPUT);
pinMode(SER, OUTPUT);
Timer1.attachInterrupt(doubleBuffer);
Serial.begin(9600);
}
void doubleBuffer() {
row[screenRow]=0;
col[screenCol]=1;
screenCol++;
if (screenCol >= 8) {
screenCol = 0;
screenRow++;
if (screenRow >= 8) {
screenRow = 0;
}
}
if((screen[screenRow] >> screenCol) & B1 == B1) {
row[screenRow]=1;
col[screenCol]=0;
digitalWrite(RCK,LOW);
shiftOut(COL_DATA);
shiftOut(ROW_DATA);
digitalWrite(RCK,HIGH);
}
}
void allOFF() {
for (int i = 0; i < 8; i++)
screen[i] = B00000000;
}
void allON() {
for (int i = 0; i < 8; i++)
screen[i] = B11111111;
}
void on(byte row, byte column) {
screen[column-1] |= (B1 << (row - 1));
}
void off(byte row, byte column) {
screen[column-1] &= ~(B1 << (row - 1));
}
void loop() {
smile();
allOFF();
lol();
allOFF();
}
void smile()
{
on(1, 1);on(1, 2);on(1, 7);on(1, 8);
on(2, 1);on(2, 2);on(2, 7);on(2, 8);
on(4, 4);on(4, 5);on(5, 4);on(5, 5);
on(7, 2);on(7, 7);
on(8, 3);on(8, 4);on(8, 5);on(8, 6);
delay(1000);
}
void lol()
{
on(1,1);on(1,2);on(1,3);on(1,4);on(1,5);on(1,6);on(1,7);on(1,8);
on(2,1);on(2,3);on(2,6);on(2,8);
on(3,1);on(3,2);on(3,7);on(3,8);
on(4,1);on(4,8);
on(5,1);on(5,3);on(5,4);on(5,5);on(5,6);on(5,8);
on(6,1);on(6,3);on(6,6);on(6,8);
on(7,1);on(7,3);on(7,6);on(7,8);
on(8,1);on(8,2);on(8,3);on(8,4);on(8,5);on(8,6);on(8,7);on(8,8);
delay(1000);
}
//shift function
void shiftOut(byte myDataOut) {
//internal function setup
boolean pinState;
//clear shift register read for sending data
digitalWrite(RCK, LOW);
// for each bit in dataOut send out a bit
for (int i = 0; i <= 7; i++) {
//set clockPin to LOW prior to sending bit
digitalWrite(SRCK, LOW);
/*if the value of DataOut and (logical AND) a bitmask
are true, set pinState to 1 (HIGH)*/
if ( myDataOut & (1<<i) ) {
pinState= HIGH;
}
else {
pinState= LOW;
}
//Sets the pin to HIGH or LOW depending on pinState
digitalWrite(SER, pinState);
//send bit out on rising edge of clock
digitalWrite(SRCK, HIGH);
digitalWrite(SER, LOW);
}
//stop shifting
digitalWrite(SRCK, LOW);
}
程序下载地址：Face
程序运行结果：点阵模块显示笑脸~
点阵模块配合按键模块，做打乒乓游戏！请移步下面网址查看：Arduino驱动8*8点阵模块 附原理图及一个打乒乓球的游戏代码
参考资料
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