Subject:
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Re: 2 rcx's
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 29 Sep 2002 05:28:12 GMT
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Original-From:
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Chris Magno <[cmagno@rogers]Spamless[.com]>
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Viewed:
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821 times
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Scott:
> What would happen if you took a wire from a sensor port on one rcx and
> connected it to a motor output on another rcx. Would this be a viable way
> to communicate with 2 rcx's if they could not be position for IR
> communication?
Yes it has been done. I used this set up to communicate between 2 RCX
in a contest where I new many people would use IR and the room would be
flooded with the stuff. The original message is here:
> http://news.lugnet.com/org/ca/rtltoronto/?n=3774
What I did was just put a lego wire from the motor out of one RCX to a
sensor in of some other RCX.
Here is the "secret" part. I pulsed the motor out port between Float
and Off. This was just perfect for the rcx to count transitions on the
sensor port. One bonus system for using the float/off method is
reducing the chance you might fry an input port with voltage. (yes i'm
sure the brick is protected, but why take the chance)
The contest info can be found here:
http://peach.mie.utoronto.ca/events/lego/lego-022302-index.html
And to be honest I can not take credit for the float/off idea it was
Iain Hendry's
http://members.rogers.com/militaryduckjock/
> My thought was that you could have the sensor watch for
> power levels of the motor output and do something different for each power
> level.
I can not speak to this idea. I have not tried that directly. Again,
all I did was count the transition pulses, and assign a look up
chart. X number of pulses would mean do one thing, Y pulses would
make the program do something else.
Chris
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Message has 2 Replies:
 | | Re: 2 rcx's
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| What about hooking a sensor port to a sensor port on another RCX? The sensor ports do output power for active sensors, so I imagine this could be detected by the other RCX. I'm just wondering if this would let you set up bi-directional (...) (22 years ago, 29-Sep-02, to lugnet.robotics)
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Message is in Reply To:
| | 2 rcx's
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| What would happen if you took a wire from a sensor port on one rcx and connected it to a motor output on another rcx. Would this be a viable way to communicate with 2 rcx's if they could not be position for IR communication? My thought was that you (...) (22 years ago, 28-Sep-02, to lugnet.robotics)
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