MAX7219LED点阵显示双位数字
2019-09-046039
AI 快速预览详细
本教程介绍了如何使用Arduino Leonardo和MAX7219LED点阵显示双位数字。每隔一秒递减一位数字。首先选择主板和扩展板，然后使用MIND+软件中的“显示器”功能显示数字，并生成代码。最后，在手动编辑模式下修改代码并上传。提供了详细的代码示例，包括自定义的LedArray_left和LedArray_right数组，用于显示双位数字。适合初学者和STEM教育项目。
    上面实现的是每隔一秒递减一位数字。 如何实现上面的效果。 首先，所使用的是df Arduino Leonardo +扩展板，显示为MAX7219LED点阵。软件为MIND+。 先用选择主板和扩展。  2、使用“显示器”的显示图案，将数字显示出来，再利用“自动生成”查看代码。   3、在“手动编辑”代码修改如下，上传，完成！！！ [mw_shl_code=c,true]#include <DFRobot_LedControl.h> DFRobot_LedControl max7219(3, 5, 4); const byte LedArray_left[10][8] = {{B00000000,B11100000,B10100000,B10100000,B10100000,B10100000,B10100000,B11100000}, {B00000000,B11000000,B01000000,B01000000,B01000000,B01000000,B01000000,B11100000}, {B00000000,B11100000,B00100000,B00100000,B11100000,B10000000,B10000000,B11100000}, {B00000000,B11100000,B00100000,B00100000,B11100000,B00100000,B00100000,B11100000}, {B00000000,B10100000,B10100000,B10100000,B11100000,B00100000,B00100000,B00100000}, {B00000000,B11100000,B10000000,B10000000,B11100000,B00100000,B00100000,B11100000}, {B00000000,B11100000,B10000000,B10000000,B11100000,B10100000,B10100000,B11100000}, {B00000000,B11100000,B00100000,B00100000,B00100000,B00100000,B00100000,B00100000}, {B00000000,B11100000,B10100000,B10100000,B11100000,B10100000,B10100000,B11100000}, {B00000000,B11100000,B10100000,B10100000,B11100000,B00100000,B00100000,B11100000}}; const byte LedArray_right[10][8] = {{B00000000,B00000111,B00000101,B00000101,B00000101,B00000101,B00000101,B00000111}, {B00000000,B00000110,B00000010,B00000010,B00000010,B00000010,B00000010,B00000111}, {B00000000,B00000111,B00000001,B00000001,B00000111,B00000100,B00000100,B00000111}, {B00000000,B00000111,B00000001,B00000001,B00000111,B00000001,B00000001,B00000111}, {B00000000,B00000101,B00000101,B00000101,B00000111,B00000001,B00000001,B00000001}, {B00000000,B00000111,B00000100,B00000100,B00000111,B00000001,B00000001,B00000111}, {B00000000,B00000111,B00000100,B00000100,B00000111,B00000101,B00000101,B00000111}, {B00000000,B00000111,B00000001,B00000001,B00000001,B00000001,B00000001,B00000001}, {B00000000,B00000111,B00000101,B00000101,B00000111,B00000101,B00000101,B00000111}, {B00000000,B00000111,B00000101,B00000101,B00000111,B00000001,B00000001,B00000111}}; byte show[]={B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000,B00000000}; void setup() { max7219.begin(); } void loop() { int m; int n; for (int i = 99; i> 0;i--) { m=int(i/10); n=i%10; for (int j = 0; j < 8; j++) { show[j]=LedArray_left[m][j]+LedArray_right[n][j]; } max7219.show(show); delay(1000); } } [/mw_shl_code] |
