搜索结果

超声波传感器适用于对大幅的平面进行静止测距。普通的超声波传感器测距范围大概是 2cm~450cm，分辨率3mm（淘宝卖家说的，笔者测试环境没那么好，个人实测比较稳定的 距离10cm~2m 左右，超过此距离就经常有偶然不准确的情况发生了，当然不排除笔者技术 问题。） 测试对象是淘宝上面最便宜的SRF-04 超声波传感器，有四个脚 ...

注:1.这篇文章断断续续写了很久,画图技术也不精,难免错漏,大家凑合看.有问题可以留言.      2.论坛排版把我的代码缩进全弄没了,大家将代码粘贴到arduino编译器,然后按ctrl+T重新格式化代码格式即可看的舒服. 一、什么是PWM PWM 即Pulse Wavelength Modulation 脉宽调制波，通过调整输出信号占空 ...

libpcap is a system-independent interface for user-level packet capture. libpcap provides a portable framework for low-level network monitoring. Applications include network statistics collection, security monitoring, network debugging, etc.

一个简单的应用程序，用来说明循环结构与分支结构的嵌套使用 * 程序功能：猜数游戏。定义被猜的数。通过键盘输入进行猜数， * 如猜错则显示“**Wrong**”， “Too high”或“Too low ”； * 猜对则显示“**Right**”后退出

The flpydisk sample is a floppy driver that resides in the directory \\Ntddk\Src\Storage\Fdc\Flpydsk. It is similar to a class driver in that it sits a level above the floppy disk controller in the driver stack, and brokers communication between the application level and the low-level driver. The fl ...

自制51编程器 I have build my own programmer. This device can program the AT89C51 and works with it. So it can easily be adapted to programming other devices by itself. The Atmel Flash devices are ideal for developing, since they can be reprogrammed easy, often and fast. You need only 1 or 2 device ...

ZigBee&#8482 是专为低速率传感器和控制网络设计的无线网络协议。有许多应用可从ZigBee 协议受益，其中可能的一些应用有：建筑自动化网络、住宅安防系统、工业控制网络、远程抄表以及PC 外设。此程序包提供的是Zigbee协义栈函数库源代码，它实现了一个与物理层 无关的应用程序接口。 因此，无需做重大修改就可以轻松地在射 ...

he LPC932 can be used to create a Pulse Width Modulated PWM signal. That s an analog signal, with only 2 discrete levels, for example 0V and 5V and a constant period. The current value of this signal at a certain poiTnt of time is proportional to its Duty Cycle. That s the High Time during one perio ...

频率调制，It is a diffrent matlab code for frequency modulation.

Routine mampres: To obtain amplitude response from h(exp(jw)). input parameters: h :n dimensioned complex array. the frequency response is stored in h(0) to h(n-1). n :the dimension of h and amp. fs :sampling frequency (Hz). iamp:If iamp=0: The Amplitude Res. amp(k)=abs(h(k)) If iamp=1: The ...