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一个简单的基于php和ajax的留言薄程序，实现无刷新动态留言(A simple Guestbook program in php and ajax, no refresh dynamic message...)

串口中断例子，可以解决接受数据不显示第一个字符的问题(Serial interrupt example, can solve the problem of receiving data does not display the first character)

基于msp430f149单片机，可以同时检查相位，脉宽，周期等信息！(Msp430f149 based microcontroller, you can also check phase, pulse width, period and other information!)

说明：  STM43F4核心板 实现用ir2104驱动的全桥整流电路的驱动，包括PWM以及频率测量，电流电压的闭环控制(STM43F4 Core Board The drive of full bridge rectifier circuit driven by IR2104 is realized, including PWM, frequency measurement and closed-loop control of current and voltage.)

PIC18系列单片机ADCC语言代码，提供给广大pic爱好者。(PIC18 Series MCU ADCC language code, available to the majority of PIC lovers.)

定时打铃原理图，时钟芯片选择ds1302，可任意设定打铃时间！(Timing the bell ring principle diagram, the clock chip ds1302 choice, can be arbitrary set the bell ring of time! )

本文以第一视角讲述了移植FATFS文件系统的过程。其中遇到的困难，解决方案的寻找，原理的讲解，都能带给人许多启发(This paper describes the process of transplanting FATFS file system from the first perspective. The difficulties encountered, the search for solutions, and the explanation of the principles can give people a lot of inspiration.)

单片机实现直流数控稳压电源,可调电压为0-9.9伏,步进为0.1伏,可以自动扫描键盘以增加或者减少电压(MCU NC Regulators DC power supply with adjustable voltage of 0-9.9 volts, stepping to 0.1 volts, can automatically scan the keyboard to increase or reduce the voltage)

说明：  飞思卡尔两轮车代码内置pid算法内外环以及串级pid控制(Freescale two-wheeled vehicle code built-in PID algorithm inner and outer loop and cascade PID control)

说明：  本设计是一个以STM32为主控制器，ESP8266 WIFI模块进行数据透传的对仓库环境进行检测的智能家居。此智能家居是通过多种传感器对仓库环境进行实时探测，把环境数据实时传输给用户，用户可通过客户端查看环境状况，环境数据同时显示在智能家居的1.4寸TFT LCD屏上，当环境数据超过阈值时，智能家居可实时报警并反馈通知用户。(This design is a smart home which uses STM32 as the main controller and esp8266 WiFi module for data transmission to detect the warehouse environment. This smart home detects the warehouse environment in real time through a variety of sensors, and transmits the environmental data to the user in real time. The user can view the environmental status through the client, and the environmental data is displayed on the 1.4-inch TFT LCD screen of the smart home at the same time. When the environmental data exceeds the threshold value, the smart home can give an alarm in real time and give feedback to the user.)