PSPexpA1

说明：  基于stm32f103的mqtt完整通信的例子，支持TLS加密通信(An example of mqtt complete communication based on STM32F103 supports TLS encrypted communication)

手持振动仪，自动通过傅里叶变换，提取峰峰值，来自动调整震动的幅度，(Handheld vibration, automatic Fourier transform, peak extraction, to automatically adjust the amplitude of vibration,)

说明：  用51单片机制作温湿度传感器的代码，可以通过lcd显示(Making Code of Temperature and Humidity Sensor with 51 Single Chip Microcomputer)

万年历温度闹钟用c语言编写而成 是一个很好的学习c编程的程序(Calendar temperature alarm clock made is a good program for learning c programming language used c)

为学习单片机的初学者提供定时器代码，希望能对这些人有所帮助(To learn microcontroller for beginners to provide the timer code, hoping to help these people )

对讲机单芯片IC ：RDA1846S 详细开发资料(RDA1846S datasheet and register table)

在STM32F407上实现HC05蓝牙串口模块(Implementation of HC05 Bluetooth serial module on STM32F407)

纯数字电路实现4位密码锁，15秒倒计时功能，简易原器件，课程设计，proteus仿真(Pure digital circuit to achieve 4-bit password lock, 15 seconds countdown function, simple components, Proteus simulation, curriculum design)

说明：  是一款用于基于北斗GPS解析数据的上位机软件，适用于K60单片机。(zasxaceacascawsssssssss)

说明：  STM32+ads1118采集程序，已调通(STM32+ads1118 sample program)