Pwm_trigger

单片机计算机设计，实现加减乘除，包括小数点的运算，用的是4*4的键盘(Single chip computer design, realization add, subtract, multiply and divide, including the operations of the decimal point, with 4* 4 is the keyboard)

128KHzID卡读卡模块程序，带模块原理图，曼切斯特解码(128KHzID card reader module program with block diagram, Manchester decoding)

PMAC 中文手册（推荐详细）PMAC（可编程多轴运动控制器），是美国Delta Tau Data System 公司于推出的PC 机平台上的运动控制器,是一个完全开放的系统。(PMAC Chinese Manual (Recommended Details))

基于51的DT11温度检测，基于51的DT11温度检测(Based on 51 of dt11 sensor temperature measurement procedures, based on the temperature sensor 51 dt11 program)

51单片机温度采集与显示设计 - 通过DS18B20温度传感器获取温度,并通过数码管显示,并实现了温度可手动校准(51 single-chip temperature acquisition and display design- through DS18B20 temperature sensor for temperature, and through the digital display, and achieve a temperature can be manually calibrated)

hantek3064仪表上位机监控的示例程序，仅供大家参考(hantek3064 Meter PC monitoring sample program, only for your reference)

说明：  avr单片机，给电压通过单片机片内ad转换给到1602显示。里面有电路图和程序(AVR single-chip microcomputer, the voltage is converted to 1602 display through ad in single-chip microcomputer)

能从SD卡读取MP3文件，并且识别后通过LD3320播放MP3，具体使用只需新建一个.ini系统文件存在sd卡，在里面设置好关键词并且所需播放的MP3文件即可(Read MP3 files from the SD card through the LD3320 play MP3 and identify specific use simply create a new the ini system files sd card exists inside set keywords and required to play MP3 files can)

该项目首先是利用单片机对鱼缸的温度进行智能控制。首先通过外部按键对鱼缸所需温度进行设定。温度传感器 DS18B20 采集温度信息在外围的 LCD 上显示出来。其次是利用光电耦合器判断有无鱼饵，若无鱼饵，发出提示，若有鱼饵，则执行自动投食或手动投食功能。(The project first is the use of single-chip microcomputer to control the temperature of the fish tank. First, the temperature of the fish tank is set by the external button. The temperature sensor DS18B20 collects the temperature information to display on the periphery LCD. Followed by using photoelectric coupler to determine whether the bait, if there is no bait, alert, if there is a bait, automatic throw in and throw food or manually cast and functional food.)

基于51单片机实现定位，并通过sim900a把定位信息发送到指定手机(base on 51 chip,send location to phone)