timer4_led_test

基本STC51单片机的PWM双直流电流扫描激光灯，通过控制两电机的不同速度比来实现多种图案的扫描显示。(Basic STC51 MCU PWM double dc current scanning laser, by controlling the different speed ratios of the two motor to realize the scans showed a variety of design.)

说明：  提取nastran生成的刚度和质量矩阵，希望有用(The stiffness and mass matrices generated by NASTRAN are extracte)

介绍单相全桥逆变器的工作原理, 阐述产生SPWM波和实现PI 控制的算法, 给出以DSP( 数 字信号处理器) 实现控制的软件流程。实验表明利用软件完成逆变器控制是可行的。 关键词: 正弦逆变器 (Introduction of single-phase full-bridge inverter working principle, the resulting SPWM wave and realize PI control algorithm to DSP (digital signal processors) to achieve software flow control. Experiments show that the use of software controlled inverter is feasible. Key words: sine inverter)

电子爱好者们经常希望测试自己的音频设备如声卡、碟机、功放、音箱等的性能指标，却苦于没有价格高昂的专业测试设备而无从下手，设计制作时也无法进行必要的测试指导。有些CD碟提供了测试信号，如著名的“雨果发烧碟（一）”、“My Disk”等，《无线电》也曾推出音频测试CD。但CD信号的精度有限，而且没有操作系统的配合，测量、记录和分析都很不方便。(Electronic fans often want to test their audio devices such as sound cards, CD, amplifier, speakers and other performance indicators, but have no specialized test equipment without the high price the start, can not carry out the necessary tests to guide the design of production. Some CD discs provide a test signal, such as the famous Hugo Audiophile CD (a) , My Disk and so on, Radio has launched an audio test CD. CD signal but the accuracy is limited, and there is no tie, measurement, recording and analysis of the operating system is very inconvenient.)

说明：  aduc845的模数转换程序，C语言编写，keil C开发平台，内容简洁。(aduc845 the analog-digital conversion process, C language, keil C development platform, is kept brief.)

使用MDK写的STM32F4的485通信程序，不使用延迟，解决了因485控制端翻转过快而导致的数据发送不完全的情况(The MDK write the STM32F4 in 485 communications program, do not use the delay to resolve the 485 control terminal flip too fast data transmission is not completely)

说明：  首先说明ADS1158命令读写模式，然后解析命令含义及配置顺序等。(First, the ADS1158 command read and write mode, and then parse the command meaning and configuration order and so on.)

MPICH安装包，并行处理时的MPI在eclipse中的使用(MPICH installation package, the MPI parallel processing when used in eclipse)

说明：  基于STM32F407ZET6，软硬件SPI协议读写W25Q128FLASH模块(W25Q128FLASH module read and write based on STM32F407ZET6, software and hardware SPI protocol)

详细的资料说明 清晰的代码 让你轻松开发自己的单片机无线收发模块 思路异常清晰 (Detailed information on the code that allows you to easily clear the MCU to develop their own ideas are very clear wireless transceiver module)