PCMbianmaMatlab

本项目是基于Cortex-M3 的地沟油快速检测装置，旨在实现“地沟油”快速，现场检测。MCU控制可编程的直接数字频率合成器（DDS）产生正弦激励信号，经过可变增益放大器（VGA）和低通滤波器（LPF）作用于食用油阻抗传感器（实验室制作）信号经过仪器放大器送入微控制器（MCU）的模数转化（ADC）通道，MCU对采集的信号通过快速傅里叶变换（DFT）处理，实现食用油阻抗与相角的检测；USB和以太网接口，可与计算机通讯，以便对采集的数据进行存储和分析。(The project is based on the Cortex-M3 waste oil rapid detection device designed to achieve " waste oil" rapid, on-site testing. MCU control programmable direct digital frequency synthesizer (DDS) generates sinusoidal excitation signal through a variable gain amplifier (VGA) and a low-pass filter (LPF) acting on the oil-impedance sensor (lab produced) to send signals through the instrumentation amplifier into the microcontroller (MCU) modulo conversion (ADC) channels, MCU signal acquisition via Fast Fourier Transform (DFT) processing, oil resistance and phase angle detection USB and Ethernet interfaces, and computer communication, in order to collect data for storage and analysis.)

STM32+DS3231+TM1640驱动数码管，显示年月日星期时分秒温度。已经跑了好几天，运行良好(STM32+DS3231+TM1640 display year, mouth,date,week,hour,minute,second,and temp.)

基于PCF8591的51单片机温度监测系统，串行AD转换，程序已验证可行，显示准确，含proteus仿真文件(Based on PCF8591 51 single chip temperature monitoring system, serial AD conversion, the program has been verified feasible, accurate display, including proteus simulation file.)

基于28335的移相程序，可以生成4组不同相位的互补的PWM波，从而可以实现开关电源的移相位操作(A phase shift program for 28335)

说明：  这是购买周立功的试验箱时候松的源代码。很经典的代码。希望学习单片机的朋友好好研究。短小精悍。有意思。这是第二部分。(This is the purchase of weeks Ligong Song of the chamber when the source code. Classic code. Singlechip friends want to learn on this issue. Dapper. Interesting. This is the second part.)

fm1702程序源码，基于mcu，c语言,芯片体积较大，功能稳定(fm1702 program source code, based mcu, c language, the larger the chip, stable function)

不错的CiteSpace使用案例-初学者(CiteSpace use case-to begainner)

个人写的基于MSP430F149的modbusRTU协议的实现，代码完全可用，压缩包内有编译无错误和运行测试例子的截图证明，使用时直接将.h和.c文件加入工程，修改相应的IO和串口即可，芯片使用MAX3485(Achieve personal written agreement based on MSP430F149 modbusRTU code fully available, compression packages have screenshots compile error and run test cases proved directly. H and. C file on the use of the project, modify the IO and serial namely may, chips MAX3485)

变压器（Transformer）是利用电磁感应的原理来改变交流电压的装置，主要构件是初级线圈、次级线圈和铁芯（磁芯）。主要功能有：电压变换、电流变换、阻抗变换、隔离、稳压（磁饱和变压器）等。按用途可以分为：电力变压器和特殊变压器（电炉变、整流变、工频试验变压器、调压器、矿用变、音频变压器、中频变压器、高频变压器、冲击变压器、仪用变压器、电子变压器、电抗器、互感器等）。电路符号常用T当作编号的开头.例: T01, T201等。(A transformer (Transformer) is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are the primary coil, the secondary coil and the iron core (core). The main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage stabilizing (magnetic saturation transformer) and so on. It can be divided into power transformers and special transformers (electric transformer, rectifier and transformer, power frequency transformer, voltage regulator, mine change, audio transformer, intermediate frequency transformer, high-frequency transformer, shock transformer, transformer, transformer, reactor, intersenser, etc.). Circuit symbols usually use T as the beginning of numbering. Examples: T01, T201 and so on.)

AT45DB081D 说明文档,网上很难找到哦(AT45DB081D datasheet)