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两路电压表，0809可以实现两路的模数转换(Two way voltmeter )

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)

说明：  单片机实现贪吃蛇游戏，本人使用的是51单片机，显示器为16*16点整控制，此类方法适合初学者玩耍~~(Snake MCU)

涵盖温控调速散热器所有源代码！哈尔滨工程大学；经典实用。(All source code to cover the thermostat governor radiator! Harbin Engineering University classic and practical.)

BH1750FVI光照度传感器在12864液晶上的显示(BH1750FVI light sensor on the 12864 LCD display)

4X4点阵键盘+1602液晶显示做的计算器（AVR单片机）(4X4 matrix keyboard 1602 LCD calculator to do (AVR microcontroller))

C程序，红外遥控启停源码，可用于智能车，普通单片机遥控器即可(C programs, infrared remote start-stop source for intelligent vehicles, ordinary single-chip remote control to)

PCB设计接地指导书,指导pcb设计及人员更好的设计PC版(PCB design ground, guide the pcb design and make better PC version of the design)

power electronic machine model

基于MSP430单片机下的GSM模块开发源代码(MSP430 microcontroller development under the GSM)