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View Full Version : quiz show buzzer system with 0/16/16



larsu
05-16-2007, 10:10 PM
I've been tasked with building a quiz show style buzzer system, and am thinking of doing to by connecting push button switches to the digital inputs of a 0/16/16, and writing software to handle buzzer order and host reset.

My questions are:
Is this reasonable?
Is there a recommendation between using momentary contact versus push button switches? I don't really care how long the button is pushed for, but want to make sure that the momentary contact lasts long enough that it is detected by the 0/16/16.
What is a good way to go about supplying the voltage necessary to trigger the inputs? I'm much more of a software guy than a hardware guy, so any help I can get in this part will help prevent me from doing it the wrong way. :)

Thanks in advance!

Alex
05-17-2007, 12:16 PM
Hi Larsu, and welcome to the community!

I think hooking up momentary buttons to the digital inputs on the 0/16/16 is perfect for the job! I think you may be impressed at how responsive the 0/16/16 will be at detecting the contact. I mean it's obviously not real time or anything, but I think it's well sufficient enough for a project like this:)


As far as voltage, check out the 0/16/16 manual (http://www.phidgets.com/documentation/1012.pdf) on page 4 and you'll see the diagram that explains how to hook up the switches with voltage. I'd just use a 9V battery or something and wire it all up so that all the switches share the same battery source.

larsu
05-17-2007, 07:26 PM
Thanks for your help. I've got the supplying voltage thing figured out now. I'll create a tutorial for it as I build it, and post the link once it's done.

Thanks again.

Alex
05-21-2007, 11:47 AM
Awesome! Can't wait to check it out:)

larsu
07-01-2007, 11:35 AM
As promised, here is my write-up (http://larsu.dyndns.org/%7Erfox/hj/). While all the software is still being worked on, all the initial testing has been very successful. The 125Hz is indeed quite responsive.

Thanks!

Alex
07-02-2007, 09:29 AM
Awesome writeup larsu! Thank you for sharing, I can't wait to see it in action:)

If you are interested in showing off your project in an area that is likely to gain more recognition and attention, I'd recommend putting together an overview (pictures and videos are great!) of the project in our Project Showcase Forum:

http://forums.trossenrobotics.com/forumdisplay.php?f=101

You can embed pictures directly into your post, it's the button right next to the "embed link" button. To embed YouTube videos check this FAQ out:

http://forums.trossenrobotics.com/faq.php?faq=trfaq#faq_youtubetag

Shoot me an email if you have any questions!