BuckChopper

实现基于MSP430单片机对于WT588D-U语音模块的驱动。(Based on MSP430 WT588D-U voice module for driving.)

利用51单片机开发一个超声波测距仪，精确度0.5mm，测量距离5—7米。(The use of an ultrasonic range finder 51 MCU development, the accuracy of 0.5mm, measure the distance 5-7 meters.)

郭天祥TX-1C版的Proteus仿真 三个版本(Guo Tianxiang TX-1C Version of Proeus Simulation Three Versions)

说明：  51单片机电子钟，可以实现基本的看时间，改时间等等操作(Schematic diagram of 51 single chip microcomputer electronic clock)

个人写的基于MSP430F149的modbusRTU协议的实现，代码完全可用，压缩包内有编译无错误和运行测试例子的截图证明，使用时直接将.h和.c文件加入工程，修改相应的IO和串口即可，芯片使用MAX3485(Achieve personal written agreement based on MSP430F149 modbusRTU code fully available, compression packages have screenshots compile error and run test cases proved directly. H and. C file on the use of the project, modify the IO and serial namely may, chips MAX3485)

ESD protection for STM32F10x USB interfence

说明：  基于Freertos的ESP8266 AT指令实现MQTT(Implementation of mqtt with esp8266 at instruction based on FreeRTOS)

中文51单片机数据手册，包括89和90系列，初学者使用(Chinese 51 singlechip Data Handbook)

说明：  基于STM32的PID模糊自适应PID控制程序，具有隶属度函数，PWM波形，传感器输入(PID fuzzy adaptive PID control program based on STM32, with membership function, PWM waveform, sensor input)

this is puzl game first , load a picture, and chose picture