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用单片机开发板对步进电机进行调控的代码，按键控制，可调速，正反转可调，并且带有1602液晶显示代码，显示步进电机当前的状态。(Code for regulation of the stepper motor microcontroller development board, key control, adjustable speed adjustable, rotating, and with 1602 LCD code display stepper motor current state.)

说明：  STM32F103+SX1278+WM8974对讲机原理图, 代码(Speex based Lora WalkieTalkie)

西电毕业论文，文章详细的阐述了直扩原理并且进行了仿真。扩展频谱技术有多种基本实现方式，本文主要介绍的是直接序列 扩频技术，特别针对二进制的 PSK调制解调技术，直接序列扩频系统的抗干 扰能力分析与直接序列扩频系统的同步方法，并进行了相关仿真分析。(Spread spectrum communications has many basic manners of implementation, this paper main introduces the direct sequence spread spectrum technology. The technology of digital signals’ modulation and demodulation, aiming at phase shift keying analyzing the capacity of resistance to anti-jamming of direct sequence spread spectrum system(DSSS) and the method of synchronization in direct sequence spread spectrum system base on the DSSS of the matlab’s simulation.)

单片机调试实现信号发生器功能的C源代码，包括三角函数、方波等等(Single-chip debugging functions for signal generator of C source code, including trigonometric, square, etc.)

定时器实现开发板上面的led等熄灭2s，亮1s(T0)

开发环境IAR STM8S003驱动RN8209，对RN8209寄存器读写 可以通过UART将RN8209的寄存器值发送到上位软件，波特率9600(IAR for STM8S STM8S003 R/W RN8209)

用键盘控制数码管，控制数码管进行静态显示，所有的数码管都显示同样的数字(With the keyboard control digital tube, digital tube display, static control all digital tube display the same number)

一个倒车雷达的程序 使用的是AVR单片机。 在include.h文件里面定义 #define CPU_F 4 //4MHZ 定义外晶振的频率 #define GOOD //40KHZ更准确 #define DIS150CM //若定义了，1.5M有效，没有定义就是2.5M有效 #define DEBUG //若定义了，则是调试模式debug , 没定义就是release模式 (Include.h document in which the definition of# define CPU_F 4// 4MHZ definition of the frequency of oscillator# define GOOD// 40KHZ more accurate# define DIS150CM// if defined, 1.5M effective, efficient 2.5M is not defined# define DEBUG// If defined, it is debug mode debug, not release model is defined as)

这是一款韩国暖风机，用于干燥的地方，此程序经过仿真通过，而且烧录到硬件中，功能ok(This is a South Korean heaters used in a dry place, this program has been through simulation, and burned into the hardware, functions ok)

PID控制算法详解，比较详细，易于理解，内含MATLAB仿真结果(PID control algorithm detailed, more detailed, easy to understand, containing MATLAB simulation results)