【雕爷学编程】Arduino动手做（163）---大尺寸8x8LED方格屏模块7
雕爷学编程,Arduino动手做,开源硬件,创客传感器,大尺寸8x8LED方格屏模块
37款传感器与模块的提法，在网络上广泛流传，其实Arduino能够兼容的传感器模块肯定是不止37种的。鉴于本人手头积累了一些传感器和执行器模块，依照实践出真知（一定要动手做）的理念，以学习和交流为目的，这里准备逐一动手试试多做实验，不管成功与否，都会记录下来——小小的进步或是搞不掂的问题，希望能够抛砖引玉。
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百六十三：6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十：轮流显示数字 “1 - 9” 以及中文 “中”，“国”
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百七十六：6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十：轮流显示数字 “1 - 9” 以及中文 “中”，“国”
接脚连线：
MAX7219 UNO
VCC →→→→→ 5V
GND →→→→→ GND
DIN →→→→→ D12（数据，数据接收引脚）
CS →→→→→ D11（负载，命令接收引脚）
CLK →→→→→ D10（时钟，时钟引脚）
*/
int clk = 10;
int cs = 11;
int din = 12;
unsigned char disp1[12][8] = {
{0x3C, 0x42, 0x42, 0x42, 0x42, 0x42, 0x42, 0x3C}, //0
{0x08, 0x18, 0x28, 0x08, 0x08, 0x08, 0x08, 0x08}, //1
{0x7E, 0x2, 0x2, 0x7E, 0x40, 0x40, 0x40, 0x7E}, //2
{0x3E, 0x2, 0x2, 0x3E, 0x2, 0x2, 0x3E, 0x0}, //3
{0x8, 0x18, 0x28, 0x48, 0xFE, 0x8, 0x8, 0x8}, //4
{0x3C, 0x20, 0x20, 0x3C, 0x4, 0x4, 0x3C, 0x0}, //5
{0x3C, 0x20, 0x20, 0x3C, 0x24, 0x24, 0x3C, 0x0}, //6
{0x3E, 0x22, 0x4, 0x8, 0x8, 0x8, 0x8, 0x8}, //7
{0x0, 0x3E, 0x22, 0x22, 0x3E, 0x22, 0x22, 0x3E}, //8
{0x3E, 0x22, 0x22, 0x3E, 0x2, 0x2, 0x2, 0x3E}, //9
{0x08, 0x7F, 0x49, 0x49, 0x7F, 0x08, 0x08, 0x08}, //中
{0xFE, 0xFE, 0x92, 0xFE, 0x9A, 0xFE, 0x82, 0xFE}, //国
};
void setup() {
//设置引脚为输出
pinMode(cs, OUTPUT);
pinMode(clk, OUTPUT);
pinMode(din, OUTPUT);
//初始化MAX7219
Init_MAX7219();
}
void loop() {
char i, j;
//字体扫描显示
for (j = 0; j < 12; j++)
{
for (i = 1; i < 9; i++)
{
Write_Max7219(i, disp1[j][i - 1]);
delay(20);
}
delay(50);
}
}
void Write_Max7219_byte(char DATA)
{
char i;
digitalWrite(cs, 0);
for (i = 8; i >= 1; i--)
{
digitalWrite(clk, 0);
if ((DATA & 0x80) > 0) {
digitalWrite(din, 1);
} else {
digitalWrite(din, 0);
}
//提取最高位给DIN端口
DATA = DATA << 1; //左移一位
digitalWrite(clk, 1);
}
}
void Write_Max7219(char address, char dat)
{
digitalWrite(cs, 0);
Write_Max7219_byte(address); //写入地址，编号
Write_Max7219_byte(dat); //写入数据，即显示数字
digitalWrite(cs, 1);
}
void Init_MAX7219(void)
{
Write_Max7219(0x09, 0x00); //译码方式：BCD码
Write_Max7219(0x0a, 0x01); //亮度
Write_Max7219(0x0b, 0x07); //扫描界限；显示
Write_Max7219(0x0c, 0x01); //掉电模式：0，普通模式：1
Write_Max7219(0x0f, 0x00);
delay(50); //显示测试：1；测试结束，正常显示：0
}
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十：轮流显示数字 “1 - 9” 以及中文 “中”，“国”
实验场景图片
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十一：使用Matrix库的三色LED
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十一：使用Matrix库的三色LED
接脚连线：
MAX7219 UNO
VCC →→→→→ 5V
GND →→→→→ GND
DIN →→→→→ D12（数据，数据接收引脚）
CS →→→→→ D11（负载，命令接收引脚）
CLK →→→→→ D10（时钟，时钟引脚）
*/
#include <Sprite.h> // Sprite before Matrix
#include <Matrix.h>
//DIN, CLK, CS, #chips
Matrix myLeds = Matrix(12, 10, 11, 3);
Sprite letter_D = Sprite(6, 8,
B111100,
B111110,
B110111,
B110011,
B110011,
B110111,
B111110,
B111100
);
Sprite letter_E = Sprite(5, 8,
B11111,
B11111,
B11000,
B11110,
B11110,
B11000,
B11111,
B11111
);
Sprite letter_L = Sprite(5, 8,
B11000,
B11000,
B11000,
B11000,
B11000,
B11000,
B11111,
B11111
);
void setup() {
myLeds.setBrightness(0);
}
void loop() {
myLeds.clear();
delay(1000);
myLeds.write(17, 0, letter_L);
delay(1000);
myLeds.write(9, 0, letter_E);
delay(1000);
myLeds.write(1, 0, letter_D);
delay(1000);
}
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十一：使用Matrix库的三色LED
实验场景图片
Matrix库的几个函数
基本用法，仅限像素
Matrix myLeds = Matrix（DIN，CLK，LOAD，numChips）;
使用您选择的名称创建Matrix对象的实例。DIN，CLK和LOAD是连接这些信号的引脚号。如果连接了多个单独连接的MAX7219芯片，则可以创建多个对象。
myLeds.clear（）;
清除整个显示屏。
myLeds.setBrightness（15）;
设置显示亮度，从0到15（最亮）。
myLeds.write（x，y，value）;
更改单个像素。对于关闭，值应为LOW，对于on，值应为HIGH。
基本用法，使用Sprite
Sprite myIcon = Sprite（宽度，高度，B11000，B11000，B11111，B11111）;
创建一个精灵对象。您可以根据需要创建任意数量的精灵，每个精灵都有一个唯一的名称。宽度应与每个数据值中的位数匹配，高度应与数据值的数量匹配。
myLeds.write（x，y，myIcon）;
在显示屏上绘制一个闪烁的精灵。
Sprite库允许创建与Matrix库一起使用的图像精灵
Sprite
启动LCD库。
width（）
返回精灵的宽度（以像素为单位）。
height（）
返回精灵的高度（以像素为单位）。
write（）
将数据写入精灵的x，y位置。
read（）
返回存储在sprite的x，y位置的数据。
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十二：建立字母库，横式滚动文本显示(三级联)
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十二：建立字母库，横式滚动文本显示(三级联)
接线接脚:
MAX7219 UNO
VCC →→→→→ 5V
GND →→→→→ GND
DIN →→→→→ D12（数据，数据接收引脚）
CS →→→→→ D11（负载，命令接收引脚）
CLK →→→→→ D10（时钟，时钟引脚）
*/
#include <MaxMatrix.h>
#include <avr/pgmspace.h>
PROGMEM const unsigned char CH[] = {
3, 8, B00000000, B00000000, B00000000, B00000000, B00000000, // space
1, 8, B01011111, B00000000, B00000000, B00000000, B00000000, // !
3, 8, B00000011, B00000000, B00000011, B00000000, B00000000, // "
5, 8, B00010100, B00111110, B00010100, B00111110, B00010100, // #
4, 8, B00100100, B01101010, B00101011, B00010010, B00000000, // $
5, 8, B01100011, B00010011, B00001000, B01100100, B01100011, // %
5, 8, B00110110, B01001001, B01010110, B00100000, B01010000, // &
1, 8, B00000011, B00000000, B00000000, B00000000, B00000000, // '
3, 8, B00011100, B00100010, B01000001, B00000000, B00000000, // (
3, 8, B01000001, B00100010, B00011100, B00000000, B00000000, // )
5, 8, B00101000, B00011000, B00001110, B00011000, B00101000, // *
5, 8, B00001000, B00001000, B00111110, B00001000, B00001000, // +
2, 8, B10110000, B01110000, B00000000, B00000000, B00000000, // ,
4, 8, B00001000, B00001000, B00001000, B00001000, B00000000, // -
2, 8, B01100000, B01100000, B00000000, B00000000, B00000000, // .
4, 8, B01100000, B00011000, B00000110, B00000001, B00000000, // /
4, 8, B00111110, B01000001, B01000001, B00111110, B00000000, // 0
3, 8, B01000010, B01111111, B01000000, B00000000, B00000000, // 1
4, 8, B01100010, B01010001, B01001001, B01000110, B00000000, // 2
4, 8, B00100010, B01000001, B01001001, B00110110, B00000000, // 3
4, 8, B00011000, B00010100, B00010010, B01111111, B00000000, // 4
4, 8, B00100111, B01000101, B01000101, B00111001, B00000000, // 5
4, 8, B00111110, B01001001, B01001001, B00110000, B00000000, // 6
4, 8, B01100001, B00010001, B00001001, B00000111, B00000000, // 7
4, 8, B00110110, B01001001, B01001001, B00110110, B00000000, // 8
4, 8, B00000110, B01001001, B01001001, B00111110, B00000000, // 9
2, 8, B01010000, B00000000, B00000000, B00000000, B00000000, // :
2, 8, B10000000, B01010000, B00000000, B00000000, B00000000, // ;
3, 8, B00010000, B00101000, B01000100, B00000000, B00000000, // <
3, 8, B00010100, B00010100, B00010100, B00000000, B00000000, // =
3, 8, B01000100, B00101000, B00010000, B00000000, B00000000, // >
4, 8, B00000010, B01011001, B00001001, B00000110, B00000000, // ?
5, 8, B00111110, B01001001, B01010101, B01011101, B00001110, // @
4, 8, B01111110, B00010001, B00010001, B01111110, B00000000, // A
4, 8, B01111111, B01001001, B01001001, B00110110, B00000000, // B
4, 8, B00111110, B01000001, B01000001, B00100010, B00000000, // C
4, 8, B01111111, B01000001, B01000001, B00111110, B00000000, // D
4, 8, B01111111, B01001001, B01001001, B01000001, B00000000, // E
4, 8, B01111111, B00001001, B00001001, B00000001, B00000000, // F
4, 8, B00111110, B01000001, B01001001, B01111010, B00000000, // G
4, 8, B01111111, B00001000, B00001000, B01111111, B00000000, // H
3, 8, B01000001, B01111111, B01000001, B00000000, B00000000, // I
4, 8, B00110000, B01000000, B01000001, B00111111, B00000000, // J
4, 8, B01111111, B00001000, B00010100, B01100011, B00000000, // K
4, 8, B01111111, B01000000, B01000000, B01000000, B00000000, // L
5, 8, B01111111, B00000010, B00001100, B00000010, B01111111, // M
5, 8, B01111111, B00000100, B00001000, B00010000, B01111111, // N
4, 8, B00111110, B01000001, B01000001, B00111110, B00000000, // O
4, 8, B01111111, B00001001, B00001001, B00000110, B00000000, // P
4, 8, B00111110, B01000001, B01000001, B10111110, B00000000, // Q
4, 8, B01111111, B00001001, B00001001, B01110110, B00000000, // R
4, 8, B01000110, B01001001, B01001001, B00110010, B00000000, // S
5, 8, B00000001, B00000001, B01111111, B00000001, B00000001, // T
4, 8, B00111111, B01000000, B01000000, B00111111, B00000000, // U
5, 8, B00001111, B00110000, B01000000, B00110000, B00001111, // V
5, 8, B00111111, B01000000, B00111000, B01000000, B00111111, // W
5, 8, B01100011, B00010100, B00001000, B00010100, B01100011, // X
5, 8, B00000111, B00001000, B01110000, B00001000, B00000111, // Y
4, 8, B01100001, B01010001, B01001001, B01000111, B00000000, // Z
2, 8, B01111111, B01000001, B00000000, B00000000, B00000000, // [
4, 8, B00000001, B00000110, B00011000, B01100000, B00000000, // \ backslash
2, 8, B01000001, B01111111, B00000000, B00000000, B00000000, // ]
3, 8, B00000010, B00000001, B00000010, B00000000, B00000000, // hat
4, 8, B01000000, B01000000, B01000000, B01000000, B00000000, // _
2, 8, B00000001, B00000010, B00000000, B00000000, B00000000, // `
4, 8, B00100000, B01010100, B01010100, B01111000, B00000000, // a
4, 8, B01111111, B01000100, B01000100, B00111000, B00000000, // b
4, 8, B00111000, B01000100, B01000100, B00101000, B00000000, // c
4, 8, B00111000, B01000100, B01000100, B01111111, B00000000, // d
4, 8, B00111000, B01010100, B01010100, B00011000, B00000000, // e
3, 8, B00000100, B01111110, B00000101, B00000000, B00000000, // f
4, 8, B10011000, B10100100, B10100100, B01111000, B00000000, // g
4, 8, B01111111, B00000100, B00000100, B01111000, B00000000, // h
3, 8, B01000100, B01111101, B01000000, B00000000, B00000000, // i
4, 8, B01000000, B10000000, B10000100, B01111101, B00000000, // j
4, 8, B01111111, B00010000, B00101000, B01000100, B00000000, // k
3, 8, B01000001, B01111111, B01000000, B00000000, B00000000, // l
5, 8, B01111100, B00000100, B01111100, B00000100, B01111000, // m
4, 8, B01111100, B00000100, B00000100, B01111000, B00000000, // n
4, 8, B00111000, B01000100, B01000100, B00111000, B00000000, // o
4, 8, B11111100, B00100100, B00100100, B00011000, B00000000, // p
4, 8, B00011000, B00100100, B00100100, B11111100, B00000000, // q
4, 8, B01111100, B00001000, B00000100, B00000100, B00000000, // r
4, 8, B01001000, B01010100, B01010100, B00100100, B00000000, // s
3, 8, B00000100, B00111111, B01000100, B00000000, B00000000, // t
4, 8, B00111100, B01000000, B01000000, B01111100, B00000000, // u
5, 8, B00011100, B00100000, B01000000, B00100000, B00011100, // v
5, 8, B00111100, B01000000, B00111100, B01000000, B00111100, // w
5, 8, B01000100, B00101000, B00010000, B00101000, B01000100, // x
4, 8, B10011100, B10100000, B10100000, B01111100, B00000000, // y
3, 8, B01100100, B01010100, B01001100, B00000000, B00000000, // z
3, 8, B00001000, B00110110, B01000001, B00000000, B00000000, // {
1, 8, B01111111, B00000000, B00000000, B00000000, B00000000, // |
3, 8, B01000001, B00110110, B00001000, B00000000, B00000000, // }
4, 8, B00001000, B00000100, B00001000, B00000100, B00000000, // ~
};
int DIN = 12;
int CLK = 10;
int CS = 11;
int maxInUse = 3;
MaxMatrix m(DIN, CS, CLK, maxInUse);
byte buffer[10];
char text[]= "Hello Eagler8 "; // 滚动文本
void setup() {
m.init(); // 模块初始化
m.setIntensity(8); // 点阵亮度 0-15
}
void loop() {
printStringWithShift(text, 100); // （文字，滚动速度）
}
// 显示=滚动提取的字符
void printCharWithShift(char c, int shift_speed) {
if (c < 32) return;
c -= 32;
memcpy_P(buffer, CH + 7 * c, 7);
m.writeSprite(32, 0, buffer);
m.setColumn(32 + buffer[0], 0);
for (int i = 0; i < buffer[0] + 1; i++){
delay(shift_speed);
m.shiftLeft(false, false);
}
}
// 从文本字符串中提取字符
void printStringWithShift(char* s, int shift_speed) {
while (*s != 0) {
printCharWithShift(*s, shift_speed);
s++;
}
}
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十二：建立字母库，横式滚动文本显示(三级联)
实验场景图片
大小点阵屏的对比
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十三：动态音乐频谱仪
实验开源代码
/*
【Arduino】168种传感器模块系列实验（资料代码+仿真编程+图形编程）
实验一百七十六：6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十三：动态音乐频谱仪
接脚连线：
MAX7219 UNO
VCC →→→→→ 5V
GND →→→→→ GND
DIN →→→→→ D12（数据，数据接收引脚）
CS →→→→→ D11（负载，命令接收引脚）
CLK →→→→→ D10（时钟，时钟引脚）
*/
#include "LedControl.h"
/* Led matrix - Max7219 Declared */
LedControl lc = LedControl(12, 11, 10, 1);
const int maxScale = 11;
/* Sensor - Max9812 Declared */
const int sensorPin = A4;
const int sampleWindow = 50; // 50ms = 20Hz
unsigned int sample;
unsigned long startMillis;
unsigned long timeCycle;
unsigned int signalMax = 0;
unsigned int signalMin = 1024;
unsigned char index = 0;
unsigned int peakToPeak[8];
unsigned int displayPeak[8];
unsigned int temp[8] = {0, 0, 0, 0, 0, 0, 0, 0};
unsigned int signalMaxBuff[8];
unsigned int signalMinBuff[8];
void setup() {
// Led matrix
lc.shutdown(0, false); // bật hiện thị
lc.setIntensity(0, 1); // chỉnh độ sáng
lc.clearDisplay(0); // tắt tất cả led
Serial.begin(9600);
}
void loop() {
startMillis = millis();
//peakToPeak = 0;
signalMax = 0;
signalMin = 1024;
// Get data in 50ms
while (millis() - startMillis < sampleWindow) {
sample = analogRead(sensorPin);
if (sample < 1024) {
if (sample > signalMax) {
signalMax = sample;
}
if (sample < signalMin) {
signalMin = sample;
}
}
// 20Hz - 64Hz - 125Hz - 250Hz - 500Hz - 1kHz (timeCycle = 1/F)(ms)
timeCycle = millis() - startMillis;
if (timeCycle == 1 || timeCycle == 2 || timeCycle == 4 || timeCycle == 8
|| timeCycle == 16 || timeCycle == 32 || timeCycle == 40 || timeCycle == 50) {
signalMaxBuff[index] = signalMax;
signalMinBuff[index] = signalMin;
index = (index + 1) % 8;
delay(1);
//Serial.println(timeCycle);
}
}
// Delete pointer to array
index = 0;
// Calculation after get samples
for (int i = 0; i < 8; i++) { // i = row (led matrix)
// sound level
peakToPeak[i] = signalMaxBuff[i] - signalMinBuff[i];
// Map 1v p-p level to the max scale of the display
displayPeak[i] = map(peakToPeak[i], 0, 1023, 0, maxScale);
// Show to led matrix
displayLed(displayPeak[i], i);
// Led drop down
if (displayPeak[i] >= temp[i]) {
temp[i] = displayPeak[i];
}
else {
temp[i]--;
}
lc.setLed(0, i, temp[i], true);
delayMicroseconds(250);
}
}
void displayLed(int displayPeak, int row) {
switch (displayPeak) {
case 0 : lc.setRow(0, row, 0x80); break;
case 1 : lc.setRow(0, row, 0xC0); break;
case 2 : lc.setRow(0, row, 0xE0); break;
case 3 : lc.setRow(0, row, 0xF0); break;
case 4 : lc.setRow(0, row, 0xF8); break;
case 5 : lc.setRow(0, row, 0xFC); break;
case 6 : lc.setRow(0, row, 0xFE); break;
case 7 : lc.setRow(0, row, 0xFF); break;
}
}
实验场景图
6mm大尺寸8x8LED方块方格点阵模块 可级联 红绿蓝白色 可选8级亮度
项目三十三：动态音乐频谱仪
实验视频剪辑
https://v.youku.com/v_show/id_XNTgxMDQ2OTc2MA==.html?spm=a2hcb.playlsit.page.1
项目：FFT算法的双点阵屏的动态频谱仪
实验视频剪辑
https://v.youku.com/v_show/id_XNTgyMjEwNjcwMA==.html?spm=a2hcb.playlsit.page.1
实验场景动态图
