dianzhen2

实现基于单片的超声波测距。 单片机每隔1秒发送一串40KHz的方波，开中断待接收到回拨时，响应进行报警。(Ultrasonic Distance-based monolithic. SCM every 1 second to send a bunch of 40KHz square wave, open interrupt to be received back, the response of the police.)

校内竞赛做了一个PM2.5测量仪，采用pm2.5传感器DSM501A测得PM2.5的浓度并把它转化为脉冲量，通过51单片机检测脉冲量并把它转化为数字量，经过换算，送到LCD1602进行显示。 (School race made ​ ​ a PM2.5 measuring instrument, using pm2.5 sensor DSM501A measured concentrations of PM2.5 and put it into pulses, pulses detected by the microcontroller 51 and convert it to digital, after conversion, send to LCD1602 display.)

这本C++程序设计书籍由清华大学郑莉所编写是目前C++程序入门的不错书籍。(This C++ programming books written by Tsinghua University Zheng Li is a good introductory book C++ program.)

NRF24L01按键测试程序可以通过按键来发送数据(NRF24L01 key test program)

能够完成板球题目，2017年全国大学生电子设计大赛国赛题，具体内容详见文件(can analyse the movement of the ball on the platform.)

无线射频程序，MEGA8控制的无线射频程序(Radio frequency procedure, MEGA8 controlled radio frequency procedure)

基于stm32的示波器，显示波形电压等参数(Oscillograph based on STM32 to display waveform voltage parameters)

stm32 上 lin通信示例代码，自己已测试过，收发正常，在汽车行业用到(STM32 Lin communication example code, they have been tested, send and receive normal, used in the automotive industry)

单总线温度DS18b20程序，适用于AVR单片机。(Single-bus temperature DS18b20 procedures applicable to the AVR microcontroller.)

实用的IGBT的RCD吸收电路，采用真实器件参数，做到基本无尖峰且吸收能量最小，保持开关管最小应力！！(Practical IGBT of RCD snubber circuit, using the real device parameters, so that almost no energy absorption peak and minimum, keep the switch minimum stress! !)