Subject:
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Re: I/o's expansions for the mindstorm ?
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 8 Aug 1999 19:25:29 GMT
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Viewed:
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1606 times
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> Philippe Jadin wrote:
> Rcx has only 3 i/o's. I was wondering if anybody had made a real
> expansion board (not fake tricks with 1 light+1switch sensor on the same
> port. I'd be very interested byt something more complex...) with IR
> comunication ? This could add a lot of io's and could be cheaper than
> buying a complete new mindstorm brick...
I tinkered with some multiplex schemes like this
http://www.plazaearth.com/usr/gasperi/MUX.HTM that simply connect different
sensors to a single input in a fixed sequence. It workes OK for passive
sensors like touch or temperature or voltage inputs. To make it work with
active sensors you would need an external power supply. I guess I have not
done much more with it because I've gotten used to the RCX for what it is.
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Message is in Reply To:
 | | Re: I/o's expansions for the mindstorm ?
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| (...) Yeah, I would really like to see such an expansion too! Someone was talking about an I2C bus interface, but the thread appearently died out - Is someone working on this?. I could also think of a "dummy RCX" which cannot be programmed but will (...) (25 years ago, 6-Aug-99, to lugnet.robotics)
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