Subject:
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Re: Several hardware questions.. Laser link Hardware expansion n' more
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 5 Jul 2002 21:54:18 GMT
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Viewed:
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647 times
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I'm not sure I follow you here.
If you're talking about switching inputs using an output (lower the 'speed' of port A to change the relay controlling the input for port 1) well, then Yes, it can be done.
However, the problem suggested below comes from using a rotation sensor. If you 'turn off' a rotation sensor, any changes made during that time are ignored.
Steve
----- Original Message -----
From: lego-robotics@crynwr.com (MiB)
Date: Fri, 5 Jul 2002 19:52:39 GMT
To: lugnet.robotics@lugnet.com
Subject: Re: Several hardware questions.. Laser link Hardware expansion n' more
> could not the voltage level deside what relays should be turned on for
> instance on port 1?
> Now it might go wrong if the battery turns to be bad.
> ----- Original Message -----
> From: "Steve Hassenplug" <hassenplug@mail.com>
> To: <lego-robotics@crynwr.com>
> Sent: Friday, July 05, 2002 4:24 PM
> Subject: Re: Several hardware questions.. Laser link Hardware expansion n'
> more
>
>
> > I've been working on just such a robot. (two RCXs, two rotation sensors, • four light sensors, and two touch sensors)
> >
> > Currently, my biggest problem has been communicating between RCXs. I keep • getting collisions with my messages.
> >
> > I've had to limit the messages to one direction. That seems to be working • better.
> >
> > Steve
> >
> > ----- Original Message -----
> > From: "John Barnes" <barnes@sensors.com>
> > Date: Fri, 5 Jul 2002 12:17:12 GMT
> > To: lugnet.robotics@lugnet.com
> > Subject: Re: Several hardware questions.. Laser link Hardware expansion n' • more
> >
> > problem. As an example, if you are building a tracked platform with left • and
> > right side rotation sensors, the easiest way to partition the task is to • use
> > two RCXs communicating via their infrared ports set to low power. One RCX • is
> > set up as being responsible for platform movement (controlling the main
> > drive motors and handling the rotation sensor inputs to close the tread
> > speed loops) while the other takes care of the higher level control and
> > navigation functions. This simplifies the communication tasks to motor
> > control commands being sent one way and motor status reponses being sent • the
> > other. Low level bump sensor overrides then also route into the motor
> > control RCX. It often seems to me that six sensor ports and six motor • ports
> > seems more than twice as capable as three and three.
> >
> > JB
> >
> >
> >
> > --
> > _______________________________________________
> > Talk More, Pay Less with Net2Phone Direct(R), up to 1500 minutes free!
> > http://www.net2phone.com/cgi-bin/link.cgi?143
>
>
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