PCB

ADXl345 driver ADXl345 driver ADXl345 driver

跑马灯是一种电脑编程工具，利用涂鸦等效果显示文字。电脑中的跑马灯，跑马灯在编程中，通常指有时需要用一矩形条显示少量用户特别关心的信息，这条信息串首尾相连，向一个方向循环滚动。(The marquee is a computer programming tool that uses text such as graffiti to display text. In the computer, the marquee and the marquee are usually programmed to display a small amount of information that the user is particularly concerned with. This string of information is connected end to end and scrolls in one direction.)

STM32单片机freemodbus的移植，主从机的都有(1, transplant FreeModbus1.5 and RT-Thread1.1.1 to STM322, development platform supports Eclipse, Keil, IAR3, can be used in the Eclipse plug-in version management EGIT 4, support Modbus RTU (ASCII untested))

对PID的学习从入门到精通吃透，有助于初学者快速学习掌握(For PID learning from entry to master fully digested, to help beginners learn to master)

stm32芯片--用GPIO口模拟I2C驱动MPU6050陀螺仪(Stm32 chip- using GPIO port simulation I2C driver MPU6050 gyroscope)

使用单片机实验板，在Keil C开发环境中编写串口发送和接收程序。在串口发送和接收程序中编程增加校验位，使用逻辑分析仪捕捉单片机串口引脚发送和接收数据的波形，并与串口接收和发送的数据进行比较。(Using SCM experiment board, in the Keil C development environment to write serial send and receive program. In the serial sending and receiving program, the program adds the parity bit, and uses logic analyzer to capture the waveform of the data sent and received by the serial port of the microcontroller, and compares it with the data received and sent by the serial port.)

主要详解了三自由度直升机的建模和仿真，主要包括极点配置、LQR、 和PID四种方法，里面有详细打过程和代码(Mainly Detailed modeling and simulation of a three-DOF helicopter, including pole placement, LQR, PID four methods, detailed playing process and code)

说明：  canopen 开源代码 CanFestival-3(canopen CanFestival-3)

这是超声波测距模块的最简单的测试程序，用1602显示(This is the most simple test program ultrasonic ranging module, with the 1602 show)

51单片机中的LCD12864显示,用的是C语言，为KEIL程序包。(51 microcontroller in LCD12864 display)