Subject:
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Re: Micro-Switches, Mux
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Tue, 27 Feb 2001 20:57:46 GMT
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Viewed:
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1331 times
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There was some doubt in another newsgroup (lugnet.robotics) about my
suggestions, so I've made an overview,
with drawings om my website (it has also some more pratical values of the
resistors),
http://baserv.uci.kun.nl/~smientki/Lego_Knex/Lego_electronica/Switch_multiplexer.htm
Ciaran Jessup wrote:
> Hi, has anyone had any joy combining the input from several micro-switches
> into one RCX input, I've built a simple multiplexor for three lego touch
> sensors, but now I need four!! .. I know this can be done by adjusting my
> current design, except I can't afford to wait for the three weeks it will
> take for me to receive a new Lego Touch sensor from dacta, however I have
> lots of micro-switches lying around.
>
> I imagine its easier to combine many micro switches as they are just simply
> on off switches so the boundaries are much easier to compute...
>
> Thank you very much for any help you can provide
>
> - Ciaran
met vriendelijke groet,
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Message has 2 Replies:
 | | Re: Micro-Switches, Mux
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| "Stef Mientki" <s.mientki@ids.kun.nl> wrote in message news:3A9C14C9.76834B....kun.nl... (...) (URL) job Stef, that's a really helpful page. I built a version of TFMs mux ((URL) a while ago but I used resistor values that are not ideal (10k, 20k, (...) (24 years ago, 28-Feb-01, to lugnet.robotics.rcx)
| | | Re: Micro-Switches, Mux
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| "Stef Mientki" <s.mientki@ids.kun.nl> wrote in message news:3A9C14C9.76834B....kun.nl... (...) Nice work. I've found the contact resistance of the LEGO switches vary so much you can't get a 4 way mux to work reliably. With real micro switches I'm (...) (24 years ago, 28-Feb-01, to lugnet.robotics.rcx)
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Message is in Reply To:
| | Micro-Switches, Mux
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| Hi, has anyone had any joy combining the input from several micro-switches into one RCX input, I've built a simple multiplexor for three lego touch sensors, but now I need four!! .. I know this can be done by adjusting my current design, except I (...) (24 years ago, 26-Feb-01, to lugnet.robotics.rcx)
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