nokia_5110

IIc应用，AT24C512初始化，清零，存储，读取多字节存入 写入多字节(IIc applications, initialization, clear, store, read, write more bytes into a multi-byte)

说明：  单片机上电以后LCD屏上显示欢迎回家， 先验证指纹再验证密码 ，同时验证成功开锁 指纹和密码分别可以验证3次 3次都错蜂鸣器响 ，按下manage键进入管理员模式 可以修改密码 删减指纹，指纹用开关量表示(After the microcontroller is powered on, the LCD screen shows welcome home. First verify the fingerprint and then verify the password. At the same time, verify the successful unlocking fingerprint and password can verify that the buzzer rings three times and three times respectively. Press the management key to enter the administrator mode to modify the password and delete the fingerprint. The fingerprint is expressed by the switch.)

基于STM32F4的四轴航拍平台。以STM32F407为控制核心，四轴飞行器为载体，辅以云台的航拍系统。硬件上由飞控电路，电源管理，通信模块，动力系统，机架，云台伺服系统组成。算法上采用简洁稳定的四元数加互补滤波作为姿态解算算法，PID作为控制器，实现飞行，云台增稳等功能(Four axis aerial platform based on STM32F4. Taking STM32F407 as the control core, the four axis flying vehicle as the carrier, and the aerial camera system with ptz. The hardware is composed of flight control circuit, power management module, communication module, power system, frame and PTZ servo system. The algorithm uses a simple and stable four yuan number plus complementary filtering as the attitude calculation algorithm, and PID is used as a controller to achieve flight, PTZ stability, and other functions)

使用pscad搭建了电力系统零序保护，效果还不错(Pscad build a power system using zero-sequence protection, the results were good)

说明：  基于STM32的Hart程序,,4_20电流的HART通讯协议程序。(Hart program based on STM32, 4_ HART communication protocol program for 20 current.)

利用1602液晶屏显示超声波测距，并有连接电路图。(1602 LCD screen display use ultrasonic ranging, and connection circuit.)

屏幕输出(pingmushuchu)

51单片机对串行存储器 24c02的 读写程序 (Serial memory 24c02 literacy procedures)

手持键盘按键信号用RS485通讯传输至CPU板 (RS485 communication between Hand_Key_Board and CPU_board)

LPC2119上的CAN和RS232透明转发器程序(LPC2119 the CAN and RS232 transparent procedures transponders)