Subject:
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Re: More Speed? Re: Mindstorms 3.0 Wish List
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 5 Nov 2003 18:30:06 GMT
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Viewed:
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2526 times
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In lugnet.robotics, John Barnes wrote:
> In lugnet.robotics, Chris Phillips wrote:
>
> > There are 230,400 square inches in a 1,600 sq-ft house. But you are assuming
> > that you cannot somehow compress the information that you are trying to store.
> > How many chair legs are in your house? Store the location and size of every
> > obstruction and you don't necessarily need to have one byte (or even one bit)
> > per square inch to completely map the place out.
>
>
> I was using the chair leg as an example. I want to wander around ticking off
> square inches as I encounter them as navigable or not. I don't want to spend my
> life trying to develop fancy ways of representing inch square "occupiedness" by
> any means other than assign a byte to each square inch and encode in that byte
> what I know about that square inch. If I wanted to mess around with fancy
> software algorithms to represent the connectedness of items I encounter, then I
> wouldn't even need Technic beams and motors. I could do the whole thing as a
> virtual robot in a virtual world entirely in my PC. But that is not where my
> interest lies. What I want is enough memory to do the software part of the job
> in the simplest way possible (from a software standpoint) so I can concentrate
> on other more mechanical and sensory related things. My chosen simple way is to
> assign each square inch to a byte. That is my choice and I think I have a right
> to make it. Steve asked why do you need more memory. I just wanted to give one
> example of someone wanting more memory and why. After all, it's not like memory
> is expensive these days!
Hmm... I think all Chris was trying to say is that there are software
techniques that could make your task doable with the current RCX. I know as a
programmer, I always try to seek software solutions that maximize the hardware
available. Other folks like to throw more hardware at a problem, and that's
fine for one-off prototypes like we tend to build around here. Like you say,
it's where your interests lie...
Mark
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Message is in Reply To:
 | | Re: More Speed? Re: Mindstorms 3.0 Wish List
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| (...) I was using the chair leg as an example. I want to wander around ticking off square inches as I encounter them as navigable or not. I don't want to spend my life trying to develop fancy ways of representing inch square "occupiedness" by any (...) (21 years ago, 5-Nov-03, to lugnet.robotics)
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