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From: dansimon@REMOVExmission.com (Daniel Simon)
Subject: Re: Roulette Wheel Project
Date: Fri, 27 Dec 2002 14:31:58 GMT
Organization: XMission http://www.xmission.com/
NNTP-Posting-Date: Fri, 27 Dec 2002 14:29:18 +0000 (UTC)
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On 23 Dec 2002 14:12:55 -0800, firstname.lastname@example.org (Gary
>Here is another good project for those who are interested.
>The article is not totally complete yet as I have to reconstruct the
>documentation. But there are some pictures of my unit that I made
>about 25 years ago. The Schematic and PCB are also there. Not sure if
>the schematic is error free, but the PCB has been checked over
>In the Projects area at:
>For the most part, the response to my site and the projects I have
>presented has been great. Hope more people get to enjoy them.
>I Love to see people doing constructive thing in there spare time!
>Season Greetings to All of you!
>All comments appreciated and if you find a page on my site that
>doesn't work, Please let me know.
Probably ok for 25 years ago. You could do one today with a
very small cheap microcontroller. You could run all the
lights with just 7 i/o lines. It would be a lot easier to
get the microcontroller than all those obsolete cmos logic
How come there are no current resistors for your LEDs? It
appears you are relying on the high level output resistance
of your bcd to decimal decoders to limit the led currents.
Do the chips get hot?
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