Subject:
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Re: Using un`Lego sensors
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 27 Jan 2002 14:26:23 GMT
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Viewed:
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892 times
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You said:
> I'm a bit electronics-o-phobic, that's why I use LEGO instead of jumping
> into "real" robotics, with HandyBoard kits and more capable sensors, etc...
> :(
I quite agree, but this might be a fairly safe first step...
> <innocent>
> hmmmm... so there's nothing compatible out of the box on the Cybot ?
> Ok. (I know, I know, I was asking for a miracle = That's the naive me :)
> </innocent>
All the circuit boards have been cleverly designed to allow interfacing
between the sensors and the processor boards. The Lego CPU (aka the RCX)
uses an active sensor switching system that allows just two wires to both
power an active sensor and to receive the reading from it at regular
intervals. The circuit needed to do this is really just a couple of diodes,
and the O'Reilly book (Unofficial Guide to Mindstorms?) I think has a design
that would allow you to connect up sensors that need power. Alternatively,
there are a couple of web sites that offer lego compatible sensors (e.g.
ultrasonic disance sensors) if you do a search.
Passive sensors, such as light sensitive diodes would need careful
programming so that you could interpret the raw value, etc. This might
require NQC or LegOS, etc. Switches are fairly safe to build yourself.
As for communicating withteh Cybot, I am hoping that the Infra Red link that
the magazine has mentioned ight be hackable...RCX <-> Cybot?
Mike
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Message has 1 Reply:
 | | RE: Using un`Lego sensors
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| Mike Reddy said: (...) hmmm... I did a search once, a "long" time ago, only to find DIY schematics. It's time to do a search again :). Maybe I'll find some already-built'n'ready-to-sell distance sensors "shop". (...) I have two small rotative (...) (23 years ago, 28-Jan-02, to lugnet.robotics)
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Message is in Reply To:
| | RE: Using un`Lego sensors
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| (...) Yeah, you're right, of course :) ehehe... I would try first to buy them at an electronics shop or something, then search the web shops (...) I'm a bit electronics-o-phobic, that's why I use LEGO instead of jumping into "real" robotics, with (...) (23 years ago, 25-Jan-02, to lugnet.robotics)
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