Subject:
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Re: Multiplexer
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 23 Apr 2001 20:33:51 GMT
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Viewed:
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800 times
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hi Gordon,
nice idea, don't have a remote control and so I'm totally unaware of what it's doing.
But I imagine the remote control just sends the direct commands (identical to the direct commands send by the IR-tower).
So you will have to download other than the standard firmware into the brick to decode this packages in another way.
I've been thinking about a similar idea, build a "remote IR control", which sets with the "SETVAR" direct command the variable on place 31. You can use 16 switch sensors in that way. Such a remote control could easily be build with a PIC (I've no experience (yet) with it).
And what if you want to use some more intelligent sensors, like rotation or light sensors ? You can only use one of them.
Als the power consumption will be needless to high.
So why not use a normal multiplexer ?
I've made an overview (probably not complete), see
http://baserv.uci.kun.nl/~smientki/Lego_Knex/Lego_electronica/Switch_multiplexer.htm
Gordon wrote:
> I was thinking about this the other day, and it occurred to me that the
> Mindstorms remote would make a very useful switch multiplexer. It wouldn't
> even use any inputs!
>
> I haven't tried this (yet) but the idea is to replace the buttons with
> microswitches, and position the IR LEDs on the remote PC board in front of
> the RCXs IR window. You would of course have to use a non-standard
> language/operating system in the RCX to decode the messages.
>
> Might be a little work, but gives us a 10-12 switch MUX with no inputs used.
>
> Regards
> Gordon
best regards,
Stef Mientki
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Message is in Reply To:
 | | Multiplexer
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| I was thinking about this the other day, and it occurred to me that the Mindstorms remote would make a very useful switch multiplexer. It wouldn't even use any inputs! I haven't tried this (yet) but the idea is to replace the buttons with (...) (24 years ago, 23-Apr-01, to lugnet.robotics)
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