blocks|key|660727|text|通常我会说并行端口或其他类似的东西，但如果你对USB寄予厚望，那么一定要看看Arduino。它是一种成本非常低的微控制器，可以独立运行，也可以通过许多灵活的接口(包括USB)与PC通信。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|660728|它在爱好者社区中非常受欢迎，因此，有许多入门级项目可以让人开始使用该设备。完全装配的支持Sparkfun+is+$35+USD的版本，请在USB上定价。|660729|entityMap|0|LINK|mutability|MUTABLE|url|http://www.arduino.cc/|1|http://www.sparkfun.com/commerce/product_info.php?products_id=666^0|12|7|0|0|18|J|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

Normally I'd say parallel port or some other such thing, but if you've got your hopes up for USB, then definitely have a look at the <a href="http://www.arduino.cc/" rel="nofollow noreferrer">Arduino</a>. It's a very low cost microcontroller that can run standalone, or can talk to a PC through a number of flexible interfaces (including USB). 

It is extremely popular with the hobbyist community, and as such, there are a number of entry-level projects to get one started with the device. Price on <a href="http://www.sparkfun.com/commerce/product_info.php?products_id=666" rel="nofollow noreferrer">Sparkfun is $35 USD</a> for a fully assembled USB-enabled version.

blocks|key|4442940|text|我已经使用this+CodeProject+article中的概念成功地点亮了LED。如果满足以下条件，它可能会满足您的要求：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4442941|4442942|你可以使用并行端口代替usb+(或者usb+to+parallal+cable/dongle)|unordered-list-item|4442943|You准备好解决一些焊接和简单的电子修补问题|4442944|你可以修改vb代码来监控你的状态|4442945|4442946|正如作者在文章中提到的，您可能会破坏计算机的并行端口(甚至更糟！)如果你不是很小心，。|style|BOLD|4442947|此外，优秀的工程师会坚持要求您将灯与端口隔离，以进一步保护计算机。(继电器、可控硅、光电隔离器等)|4442948|话虽如此，但它确实起作用了！|4442949|entityMap|0|LINK|mutability|MUTABLE|url|http://www.codeproject.com/KB/vb/PortAccess.aspx^0|5|O|0|0|0|0|0|0|0|C|U|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|D|3|-4|5|6|7|16|8|@]|9|@]|C|$]]|$1|E|3|F|5|G|7|17|8|@]|9|@]|C|$]]|$1|H|3|I|5|G|7|18|8|@]|9|@]|C|$]]|$1|J|3|K|5|G|7|19|8|@]|9|@]|C|$]]|$1|L|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]|$1|M|3|N|5|6|7|1B|8|@$A|1C|B|1D|O|P]]|9|@]|C|$]]|$1|Q|3|R|5|6|7|1E|8|@]|9|@]|C|$]]|$1|S|3|T|5|6|7|1F|8|@]|9|@]|C|$]]|$1|U|3|-4|5|6|7|1G|8|@]|9|@]|C|$]]]|V|$W|$5|X|Y|Z|C|$10|11]]]]

I have used the concepts in <a href="http://www.codeproject.com/KB/vb/PortAccess.aspx" rel="nofollow noreferrer">this CodeProject article</a> to successfully light up LEDs. 
It might meet your requirements if:

<ul>
<li>You can use parallel port instead of usb (or maybe usb to parallal cable/dongle)</li>
<li>You are ready to tackle some soldering and simple electronic tinkering</li>
<li>You can modify the vb code to monitor your status</li>
</ul>

As the author mentions in the article, you can destroy your computer's parallel port (and worse!) if you are not very careful.

In addition, a good engineer would insist that you isolate the lights from the port to further protect the computer. (relays, triacs, opto isolators, etc.)

That being said, it does work!

blocks|key|4443003|text|最简单的解决方案是买一个USB交通灯，而不是自己造一个。例如，USB+Ampel。有了一个简单的API，这可能会容易得多。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4443004|entityMap|0|LINK|mutability|MUTABLE|url|http://www.cleware.de/p-usbampel-E.html^0|V|9|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

The easiest solution is to buy a USB traffic light, rather than building one yourself. E.g. <a href="http://www.cleware.de/p-usbampel-E.html" rel="nofollow noreferrer">USB Ampel</a>. With a simple API included, it would probably be much easier.

blocks|key|930982|text|传统上，人们使用X10自动化框架来处理这类事情。我公司的人使用它来控制熔岩灯，以指示我们的持续集成构建的状态。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|930983|在How+does+one+get+started+writing+applications+that+interact+with+x10+protocol?上有一个指针|offset|length|930984|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/questions/141338/how-does-one-get-started-writing-applications-that-interact-with-x10-protocol^0|0|1|26|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

Traditionally people have used the X10 automation framework for this kind of thing. People at my company use it to control lava lamps to indicate the status of our continuous integration build.

There's a pointer over at <a href="https://stackoverflow.com/questions/141338/how-does-one-get-started-writing-applications-that-interact-with-x10-protocol">How does one get started writing applications that interact with x10 protocol?</a>

blocks|key|4442965|text|更进一步的一步是使用像Arduino这样的微控制器平台自己构建一些东西。在Arduino+Playground页面上提供了一些使用Arduino平台的可能示例。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4442966|关于如何使用Arduino制作红绿灯的An+article可以在Instructables上找到。|4442967|entityMap|0|LINK|mutability|MUTABLE|url|http://www.arduino.cc/|1|http://www.arduino.cc/playground/Projects/ArduinoUsers|2|http://www.instructables.com/id/Arduino_Making_a_set_of_traffic_lights/|3^0|B|7|0|11|I|1|0|J|A|2|W|D|3|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@$A|T|B|U|1|V]|$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]|$A|13|B|14|1|15]]|C|$]]|$1|F|3|-4|5|6|7|16|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]|P|$5|I|J|K|C|$L|Q]]|R|$5|I|J|K|C|$L|Q]]]]

One step further is to build something yourself using a microcontroller platform like the <a href="http://www.arduino.cc/" rel="nofollow noreferrer">Arduino</a>. Some examples of what is possible with the Arduino platform are available on the <a href="http://www.arduino.cc/playground/Projects/ArduinoUsers" rel="nofollow noreferrer">Arduino Playground</a> page.

<a href="http://www.instructables.com/id/Arduino_Making_a_set_of_traffic_lights/" rel="nofollow noreferrer">An article</a> on how to make traffic lights using an Arduino is available at <a href="http://www.instructables.com/id/Arduino_Making_a_set_of_traffic_lights/" rel="nofollow noreferrer">Instructables</a>.

blocks|key|931077|text|Channel9有一段来自Microsoft+PDC的视频，展示了一些开发人员如何使用“构建兔”来做类似的事情：PDC2008+ShowOff+Entry:+Brian+the+Build+Bunny|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|931078|还有更多的信息和source+code+here。|931079|entityMap|0|LINK|mutability|MUTABLE|url|http://channel9.msdn.com/posts/briankel/PDC2008-ShowOff-Entry-Brian-the-Build-Bunny/|1|http://www.woodwardweb.com/vsts/behind_brian_th.html^0|1K|18|0|0|8|G|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

Channel9 has a video from the Microsoft PDC showing how some developers use a "Build Bunny" for something similar: <a href="http://channel9.msdn.com/posts/briankel/PDC2008-ShowOff-Entry-Brian-the-Build-Bunny/" rel="nofollow noreferrer">PDC2008 ShowOff Entry: Brian the Build Bunny</a>

There's also more information and <a href="http://www.woodwardweb.com/vsts/behind_brian_th.html" rel="nofollow noreferrer">source code here</a>.

blocks|key|2975514|text|尝试使用简单的usb实验接口，如Phidgets+(Www.phidgets.com)或Velleman+k8055+USB实验板(http://www.velleman.be/ot/en/product/view/?id=351346)。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2975515|entityMap|0|LINK|mutability|MUTABLE|url|http://www.velleman.be/ot/en/product/view/?id=351346^0|1U|1G|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Try using simple usb experimentation interfaces such as Phidgets (Www.phidgets.com) or the Velleman k8055 USB experimentation board (<a href="http://www.velleman.be/ot/en/product/view/?id=351346" rel="nofollow noreferrer">http://www.velleman.be/ot/en/product/view/?id=351346</a>).

blocks|key|4443113|text|当CI服务器上的构建中断时，我们在上一份工作中使用了该产品来控制一组旋转红绿灯。以太网很不错，这样你就不会局限于3M范围的通用串行总线，它就像打开10000端口的TCPClient并发送一个"1R1\r“一样简单。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4443114|http://www.6bit.com/products/smartrelayE.php?products_id=33|offset|length|4443115|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1N|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@$D|O|E|P|1|Q]]|A|$]]|$1|F|3|-4|5|6|7|R|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|C]]]]

We used this product at my last job to control a set of revolving traffic lights when a build would break on our CI server. The Ethernet is nice so that you are not limited to the 3M range of USB and it is as easy as opening a TCPClient to port 10000 and sending a "1R1\r".

<a href="http://www.6bit.com/products/smartrelayE.php?products_id=33" rel="nofollow noreferrer"><a href="http://www.6bit.com/products/smartrelayE.php?products_id=33" rel="nofollow noreferrer">http://www.6bit.com/products/smartrelayE.php?products_id=33</a></a>

I'd like to have an application monitor written in C# monitoring a set of Forex trading positions. It would be connected via USB to a real set of "traffic lights" sat on a desk which it would use to indicate system status. Can anybody suggest a good solution?

How to have a computer flash a light

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想有一个在C#编写的应用程序监控一组外汇交易头寸。它将通过USB连接到桌子上的一组真正的“红绿灯”，它将用来指示系统状态。有没有人能提出一个好的解决方案？

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