DMX_TUBE

An effecient algorithm has been proposed by Schmidl and Cox for carrier frequency estimation in orthogonal frequency-division multiplexing systems. The scheme is based on the transmission of a training symbol composed of two identical halves in the time domain. In this paper we extend this algorithm by considering a training symbol composed of L>2 identical parts. This makes it possible to achieve a better accuracy at the cost of some increase in computational load. The estimation range can be made as large as desired without the need of a second training symbol, as required by the Schmidl and Cox method.

51单片机表达式计算器，用1602显示，支持200个字符的滚屏显示。(51 MCU expression calculator, 1602, support 200 characters scrolling display.)

说明：  基于51单片机的远程仓库湿度监测系统，含proteus仿真(Remote Warehouse Humidity Monitoring System Based on 51 Single Chip Microcomputer with Proteus Simulation)

说明：  该抢答器供不多于4个参赛队或者个人的抢答比赛场合使用。每个参赛队的座位前 安装1只抢答按钮开关（用板上的S9、S10、S11、S12）和一个信号灯（D4、D5、D6、D7）。 主持人座位前装一只复原开关（板上S3）、1只蜂鸣器（板上BUZ1）和一个抢答器工作状态 指示灯（D10),每当主持人口头发出号令之后.哪个队先按下座位上的按钮开关,该座位的信 号灯就先被点亮,同时封锁其他按钮开关的活动.并且熄灭主持人座位上的状态指示灯和发出 三声类似于电话振铃的提示声,以声明此次抢答动作已经完成.在主持人确认后,按下复原按钮 ,状态指示灯重新点亮,并且同时发出"笛-笛-"声,为下一次抢答作好准备.(the Responder for up to four teams or individuals in the use of Responder competition occasions. Every team installed the seats before a Responder button switch (with the board S9, S10, S11, S12), and a signal (D4, D5, D6, D7). Moderator seats installed before a recovery switch (S3 board), a buzzer (BUZ1 board) and a Responder work status indicators (D10), whenever the moderator after oral orders issued. Which team first press of a button switches, the seat lights were lit on the first, while the blockade of the other button to switch activities. Moderator seats and extinguished the lights and the state issued three sound similar to the telephone tips ringing sound, in a statement this Responder action has been completed. the presenters confirmed? recovery button, status indicators re-lit,)

使用kinect传感器对图像的深度距离进行测量(measure depth distance by kinect sensor)

51单片机控制，可远程操控温度和湿度，实时观察与检测(51 MCU control, remote control of temperature and humidity, real-time observation and testing)

说明：  ADC 测试包含ADC+12864+UART+PID(ADC test includes ADC+12864+UART+PID)

DS27xx系列的代码，库仑计测量电量的，（最好能够使用DS2780K来直接设置）(DS27xx series of code, coulometric meter measuring the amount of electricity (preferably by using DS2780K to set it directly))

平衡跷跷板 PWM AD 传感器 nokia5110液晶 模块化编程(Balanced seesaw PWM AD sensor nokia5110 LCD modular programming)

说明：  使用STM32单片机开发的简易电子钟，并实现计时报时(A Simple Electronic Clock Developed with STM32 Single Chip Microcomputer)