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 19:52:39 GMT
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Original-From:
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MiB <m8114@ing-+nospam+steen.se>
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Viewed:
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1634 times
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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
>
>
>
> --
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