8*8点阵模块

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点阵模块


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.ino:

/**************************************************
   Face
   ( 8x8 Led Dot Matrix with two 74HC595 on Arduino)

   by YFROBOT
 ***************************************************/

#include "TimerOne.h"
#include "face.h"
// 默认显示
#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))
// 垂直翻转
//#define ROW_DATA ((row[0]<<0)|(row[1]<<1)|(row[2]<<2)|(row[3]<<3)|(row[4]<<4)|(row[5]<<5)|(row[6]<<6)|(row[7]<<7))
//#define COL_DATA ((col[0]<<0)|(col[1]<<1)|(col[2]<<2)|(col[3]<<3)|(col[4]<<4)|(col[5]<<5)|(col[6]<<6)|(col[7]<<7))

// flip horizontal
#define flip_horizontal 7-screenCol    // 默认显示
//#define flip_horizontal screenCol      // 水平翻转

//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;

// A counter to know what frame we're showing
int animationIndex = 0;
// 8x8 Point temporary array
byte brightnesses[64];

void setup() {
  //  Timer1.initialize(100);
  pinMode(RCK, OUTPUT);
  pinMode(SRCK, OUTPUT);
  pinMode(SER, OUTPUT);
  //  Timer1.attachInterrupt(doubleBuffer);
  Serial.begin(9600);
}

void doubleBuffer() {
  int k = 8;
  while (k--) {
    row[screenRow] = 0;
    col[screenCol] = 1;

    screenCol++;
    if (screenCol >= 8) {
      screenCol = 0;
      screenRow++;
      if (screenRow >= 8) {
        screenRow = 0;
      }
    }

    if ((screen[screenRow] >> flip_horizontal) & B1 == B1) {
      row[screenRow] = 1;
      col[screenCol] = 0;
      digitalWrite(RCK, LOW);
      shiftOut(SER, SRCK, MSBFIRST, COL_DATA); //先选择列
      shiftOut(SER, SRCK, MSBFIRST, ROW_DATA); //再送行数据
      digitalWrite(RCK, HIGH);
    }
  }
}

void UpdataDate() {
  if (animationIndex < animationFrames) {
    for (int i = 0; i < 64; i++) {
      int Dot = (animation[animationIndex][i / 4] >> (i % 4 * 2));
      brightnesses[i] = (Dot & B1) || (Dot & B10);
      screen[7 - i / 8] |= (brightnesses[i] << (i % 8)) ;
    }
  }
  unsigned long startime = millis();
  while (millis() - startime < animationDelays[animationIndex])
  {
    doubleBuffer();
  }
  animationIndex ++;
  if (animationIndex >= animationFrames) {
    //restart animation index
    animationIndex = 0;
  }
  for (int i = 0; i < 8; i++)
    screen[i] = B0;
}

void loop() {
  UpdataDate();
}


face.h:

int animationFrames = 2;

int animationDelays[] = { 1000, 1000 };

// Animation is designed for 8x8 pixels
uint8_t animation[][16] = {
  { 0x55, 0x55, 0x11, 0x44, 0x5, 0x50, 0x1, 0x40, 0x51, 0x45, 0x11, 0x44, 0x11, 0x44, 0x55, 0x55 },
  { 0x5, 0x50, 0x5, 0x50, 0x0, 0x0, 0x40, 0x1, 0x40, 0x1, 0x0, 0x0, 0x4, 0x10, 0x50, 0x5 }
};

程序下载地址:Face

程序运行结果:点阵模块显示笑脸和囧脸~

囧脸.png笑脸.png

face.h文件通过点阵取模软件 获得:

点阵取模软件演示1.png点阵取模软件演示2.png



点阵模块滚屏显示,请移步:点阵模块滚屏显示

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


乒乓游戏程序下载地址:乒乓游戏



参考资料





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