富士门禁二次开发包

关于电磁场电磁波的学习和PPT课件，希望有助于感兴趣同学的学习(Electromagnetic field on the electromagnetic wave of learning and PPT courseware, I hope to help students interested in learning)

CS5460A芯片源程序，能测量电流、电压以及电能等量。(CS5460A chip source program, which can measure current, voltage and equal power.)

STM32+AD7606串行程序，采用spi串行读取数据，单片机采用stm32f407(STM32+AD7606 serial program,using spi serial to read data,single-chip using stm32f407)

STM32驱动CD4067控制多个红外线进行距离测量(Stm32 drive cd4067 control multiple infrared distance measurement)

该程序对4个点目标进行仿真成像，距离向采用解线频调方法进行压缩，方位向采用传统的脉冲压缩，最后获得了4个点目标的像。程序中给出了详细的参数设置，便于理解。(The program on a four point target simulation imaging, distance to the solution line frequency modulation, compression, orientation to the traditional pulse compression, and finally a four point targets like. The program gives a detailed parameter settings, easy to understand.)

在所考虑的时间间隔内,变化的电流、电压或功率的最大瞬间值。 (In the considered time intervals, change the maximum instantaneous value of the current, voltage or power.)

7128芯片设计原理图，适合3A一下电流的步进电机驱动器设计，非常实用(7128 chip design schematics for what current 3A stepper motor driver design, very practical)

激光测距传感器，使用单片机对传感器测的的数据进行提取并处理得到距离值(laser sensor based distance Measuring device)

实现 w5500 stm32 下的 udp组播(achieve; realize; bring about; come true; actualize)

说明：  ec20通信基于stm32单片机，MQTT协议连接移动的onenet平台。(EC20 communication is based on STM32 single chip microcomputer, mqtt protocol connects the mobile onenet platform.)