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From: shb*NO*SPAMemail@example.com (Si Ballenger)
Subject: Re: Automatic switcher/monitor
Date: Sat, 21 Dec 2002 14:49:23 GMT
Organization: maybe later...
NNTP-Posting-Date: Sat, 21 Dec 2002 14:49:33 +0000 (UTC)
X-Newsreader: Forte Free Agent 1.11/32.235
On 21 Dec 2002 07:56:59 GMT, Eric Bohlman
>"Scott VanderVeen" wrote in
>> I have built a panel meter kit and would like it to continuously
>> monitor three inputs. I would like it to cycle and switch
>> automatically, at about 1- 3 second intervals, between each input and
>> light an LED that corresponds to the input. The inputs are low
>> voltage up to 5 volts.
>> I am using a 5 volts supplied by a 7805.
>> Any advice on how to accomplish this task?
>First thought that comes to mind is a 4017 decoded-output counter, a 4066
>analog switch, and some clock source (CMOS 555 or inverter-based
The below kit would be a good start. Could use a resistor and
NPN transistor attached to each LED for the switch.
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