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电力系统中配电网络的距离保护模型，可用于分布式电源并入后的保护方案(Distance protection model power system distribution network can be used for distributed power protection program incorporated )

简单的51单片机控制驱动,功能简单,可以调节转速,适合新手学习.(Simple 51 SCM control drive, a simple function, you can adjust the speed, suitable for beginners to learn.)

可控步进电机程序 msp430 tb6560(Controlled stepper motor program msp430 tb6560)

超声波测距（5 28线性处理）,测量线性度很高(Ultrasonic Ranging (528 linear processing), high linearity measurements)

自己画的四轴飞行器，原理图，pcb。。。。。。。。。。。。。。。。。。。。。。。为了20个子，我真的不容易(Own painting Four aircraft, schematics, pcb)

基于51单片机实现温度检测电压检测lcd显示功能的protues仿真(Protues simulation of temperature detection, voltage detection and LCD display function based on 51 single chip microcomputer)

说明：  GPRS多路穿透文件，实现多路链接。性能稳定，工厂可以使用(GPRS Multiplex Penetration File)

avr ATmega128 PWM输出OCR1A=0x40 //OC1A 输出 25 占空比 OCR1B=0x80 //OC1B 输出 50 占空比 OCR1C=0xc0 //OC1C 输出 75 占空比(avr ATmega128 PWM)

单片机模拟交通灯显示。其中，红灯与绿灯显示时间均为50s，中间的黄灯显示时间为15s。绿灯用八位发光二极管流动闪烁作代表；红灯用八位发光二极管全亮作代表；黄灯用八位发光二极管全亮全灭闪烁作代表。刚开始显示的为绿灯。(SCM simulated traffic light display. Among them, the red and green display times are 50s, in the middle of the yellow light is displayed for 15s. Green with eight light-emitting diode flashes as a representative flow red with eight full brightness light-emitting diodes as a representative yellow with eight light-emitting diodes for all light flashes Quanmie representatives. Just beginning to show as green. Display order: green- yellow- red- yellow- green- yellow- red- ..................)

用STM32F407的ADC+DMA+DAC的应用(Use STM32F407 ADC+ DMA+ application of DAC)