Subject:
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Re: Searching for alternatives
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 5 Feb 2001 15:56:24 GMT
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Original-From:
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Tim Hatch <vbq@IHATESPAMmyrealbox.com>
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Viewed:
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1605 times
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Most of what has been discussed has been "How to make Palms or Agendas
communicate using IR with 1 or more RCX bricks." I also considered for a
while how to do as you say and have the PDA itself power the robot, but if
you do so, you'll need a heftier power source than a pair of AAAs. Also,
the RCX has all of the sensor polling (30ms off, 2ms on--all that part)
circuitry already built. I'm handy enough with a soldering iron and
electrical theory that building an IR tower replacement or a custom sensor
is no big deal for me. However, I don't think there are more than a handful
of us that could actually attempt building all of the A/D with PWM for the
motors, in anywhere the same size. (It might be possible to create a device
that would do something like the wired VLL that Marco used, one output that
is just held low, then brought high, however.) That, I believe, is why this
thread has progressed to interfacing with thr RCX, not replacing it. If you
need more inputs (and speed is not an issue), why not use a couple of Scouts
connected using IR to an RCX and maybe an Agenda also?
Please feel free to respute this.
Tim
----- Original Message -----
From: John Barnes <barnes@sensors.com>
To: <lego-robotics@crynwr.com>
Sent: Monday, February 05, 2001 10:46 AM
Subject: Re: Searching for alternatives
>
> I have been following this thread with great interest - as an avid seeker • of
> alternatives.
>
> I would appreciate a link to some in depth info about the "Agenda" device • if
> there is one.
>
> I also have a question;
>
> If you are proposing replacing the compute capability of the RCX by • something
> else and if you are going to have to get out a soldering iron to make
> "something"
> which allows your "alternative" to talk to the RCX, it's presumably • because
> you want
> the RCX's motor output and sensor input capabilities. So why throttle your
> new scheme
> by the 3+3 limit of the RCX? It seems to me that a simple interface box • which
> connects to the Agenda (wish I knew more about what "connects' means in • this
> instance) and which hosts a useful number of motor outputs and Lego • compatible
> analog inputs would be a lot more appropriate.
>
> Maybe the real task is to devise such a box which is 100% Lego compatible, • ie;
> with studs, technic holes and 2x2 Lego electrical connectors, into which • or
> onto
> which the target computing device is attached?
>
> Well, that's my 2c worth ...
>
> JB
>
> - avid builder of alternatives!
>
>
>
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Message has 1 Reply:
 | | Re: Searching for alternatives
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| (...) Right - which is why I only want to use the PDA as the 'brains' of the robot with the RCX acting as a 'slave' that deals only with the low level mechanisms. (...) Well, I think speed (of communications) *is* an issue - but short of redesigning (...) (24 years ago, 7-Feb-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: Searching for alternatives
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| I have been following this thread with great interest - as an avid seeker of alternatives. I would appreciate a link to some in depth info about the "Agenda" device if there is one. I also have a question; If you are proposing replacing the compute (...) (24 years ago, 5-Feb-01, to lugnet.robotics)
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