Subject:
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Re: Mindstorms NXT programming languages
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 13 Jan 2006 17:58:45 GMT
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Viewed:
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5634 times
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In lugnet.robotics, steve <sjbaker1@airmail.net> wrote:
> Dick Swan wrote:
>
> > For reference, a simple line following robot is 5 LOC and 50
> > code bytes. [I know this is 10 bytes per LOC but there's
> > some startup overhead in this]. A very complicated line
> > following robot - using a PID algorithm - takes about 70
> > lines of code and uses 500 code bytes. Anybody got any
> > applications that they plan that are 1000 times more
> > complicated that this?
>
> Yes! Easily.
Steve,
What you need to do is to make a dongle for your laptop PC with 8G DRAM, a 1
terabyte hard disk, that gives you an infinite number of LEGO NXT compatible
motor ports and sensor ports.
You will probably have to drill a few technic pin holes in the case, and maybe
glue a few plates on here or there, but from there you can build a robot that
has the capabilities you desire.
When you get this done and it sells for $250, I promise I'll buy one ;^)
>
> I want to load images from a camera and process them in
> realtime. To do that, I'd like to take a pre-existing
> image processing library and compile it for the NXT.
>
> That could EASILY consume all 256Kb of flash - and the
> image itself would need vastly more RAM than the NXT
> has. That's not in any way an unreasonable thing to
> expect to be able to do in an era of $8, 64Mb thumb drives
> and teeny-tiny cameras that fit into a cellphone and cost
> $20. It's something that robots need to be able to do.
>
> You can buy a 16MB CompactFlash card for your camera for $6,
> a 32MB card for $7 and a Kodak 64MB card for $8. Memorex
> make a 128MB card for $11. And we're going to spend $250
> and be stuck with ONE QUARTER OF A MEG. Can you really
> tell me that you wouldn't have preferred to spend $261 and
> had a thousand times more memory than you're going to get?
>
> Really, take a look at some real applications - not toys
> like line followers. Real applications take MEGABYTES of
> code and tens of megabytes of data.
>
> Suppose I want my robot to play music as it drives along.
> A single MP3 file for 5 minutes of music is gonna eat
> 100% of the NXT's memory - even when saved with low
> quality options.
>
> With enough flash memory, we could dump a compiler
> and simple operating system onto the NXT and using
> a bluetooth keyboard and the NXT's LCD display, we
> could type small programs right into the NXT and
> compile and run them without a PC. Think how that
> would be useful in competitions for fixing last
> minute bugs.
>
> I can EASILY imagine things I've been wanting to do
> with my RCX (and couldn't - only because of lack of
> memory) that I *still* can't do with the NXT - even
> though the technology is trivially easy - and the
> price would not have been more than a few extra
> dollars to make that possible.
>
> Yes, there are things you can usefully do in less
> memory - even less than the RCX for example. Yes,
> some people will find that the NXT is a huge
> improvement.
>
> I'm just frustrated that for the want of a few
> bucks worth of Flash memory, the NXT is still
> not capable of the sorts of things that real
> robots need to do.
I recommend this mantra to you for the rest of 2006.
"NXT is a toy for 10 year old kids. NXT is a toy for 10 year old kids. NXT is
a toy for 10 year old kids".
Go ahead, say it with me..... "NXT is a toy for 10 year old kids."
Kev
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Message has 1 Reply:
 | | Re: Mindstorms NXT programming languages
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| What would I like to implement that won't fit in 256K... check out this list of modules from Pyro: # PyroModuleDirectControl # PyroModuleSequencingControl # PyroModuleBehaviorBasedControl # PyroModuleReinforcementLearning # PyroModuleNeuralNetworks (...) (21 years ago, 13-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | Re: Mindstorms NXT programming languages
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| (...) Yes! Easily. I want to load images from a camera and process them in realtime. To do that, I'd like to take a pre-existing image processing library and compile it for the NXT. That could EASILY consume all 256Kb of flash - and the image itself (...) (21 years ago, 13-Jan-06, to lugnet.robotics)
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