DC-DC

基于STM32F10X的气压传感器（bmp180）程序，串口输出，内含bmp180手册。(Based STM32F10X pressure sensor (bmp180) program, serial output, containing bmp180 manual.)

液晶1602万年历显示 ① 利用单片机内定时器，通过软件编程方式实现年、月、日、星期、时、分、秒7个参数的运行。 ② 按大、小月显示月末日期。 ③按24小时制显示时、分、秒。 ④通过2个外接独立键盘实现对“万年历”的日期和的时间调整。 (602 liquid crystal display calendar The use of single-chip microcomputer timer, through software programming to achieve the year, month, day, week, hours, minutes, seconds, 7 parameters of the operation. According to the end date, Xiaoyue display. According to the 24 hour system shows hours, minutes, seconds. Through the 2 external independent keyboard implementation date and time adjustment of calendar .)

应用tlc1543及cd4067对35路信号进行采集，一条试通过(application tlc1543 35 and cd4067 right direction signal acquisition, through a trial)

电子秤proteus仿真，有压力传感器和AD转换模块(Electronic Liureus simulation with pressure sensor and AD conversion module)

基于ARM的俄罗斯方块设计，本次将设计实现一个用C语言编写的、在基于ARM核心的ADuC7020 ARM开发板上实现的单机版的俄罗斯方块小游戏。使用Keil3编程软件对C语言代码进行编写，支持按键操作，在实现过程中涉及了LCD液晶屏的图形显示、按键控制、LED控制、中断、蜂鸣器等嵌入式的编程技术。(Tetris ARM-based design, this will be designed to achieve a C language, the ADuC7020 ARM development board ARM core-based implementations of stand-alone version of the Tetris game. Use Keil3 programming software code written in the C language, support for key operations involved in the implementation process of the LCD screen graphical display, control buttons, LED control, interrupt, buzzer embedded programming techniques.)

Functions related to sysfs handling.

红外解码数码管显示,用你一个外部中断和一个定时器中断来做的，虽然可以解码，但是效率不高，不建议在商用产品上使用。(IR decoding the digital tube display, you use an external interrupt and a timer interrupt to do, although it can be decoded, but efficiency is not high, not recommended for use in commercial products.)

对于的Proteus_ISIS教程，附有2个电路图(For the Proteus_ISIS tutorial, with two circuit)

说明：  ad9850的单片机程序，适用于51系列，有用的可下载参考(ad9850 microcontroller program, suitable for 51 series, useful can be downloaded for reference)

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)