lcd1602

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

说明：  自我学习STM32教程，学习进步，兴趣是最好的老师，只要愿意学就能成功(Self-learning STM32, learning progress, interest is the best teacher, as long as willing to learn can succeed.)

说明：  基于光敏电阻的路灯控制电路。在单片机的基础上，用光敏电阻控制led亮灭。(Street lamp control circuit based on photoresistor. On the basis of MCU, the LED is controlled by photoresistor.)

方案组成模块及系统框图 本方案设计主要由以下模块组成 1：顶层模块 2：数据输入排序模块 3：系统控制模块 4：RAM控制器模块 5：ROM控制器模块 6：蝶型单元模块(Program composition module and system diagram The design of this scheme is mainly composed of the following modules 1: top module 2: data input sorting module 3: system control module 4:RAM controller module 5:ROM controller module 6: butterfly type unit module)

AT89S51的串口程序，可以直接编译使用，标准程序(AT89S51 serial procedures, the compiler can directly use standard procedures)

说明：  Arduino单片机开发笔记2-7,希望大家都看看(Arduino microcontroller development notes 2-7, we want everyone to see)

NRF82532看门狗程序，能很好的保证单片机系统正常工作，性能十分可靠。(The NRF82532 watchdog program can ensure the normal operation of the single chip microcomputer system and its performance is very reliable.)

小三极管成型机源码程序，实际工程案例应用源码程序 (Small transistor forming machine source programs, the actual application source programs Projects)

IPC2221功率电子设计中安全间距标准规范(IPC2221 power electronic design safe distance Standard)

说明：  TCS3200颜色测试,读取RGB值,LCD1602显示R,G,B值(TCS3200 color test, read RGB value, LCD1602 shows R, G, B value.)