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(...) Benton, In the world of electronics it is typically cheaper to buy what you need off the shelf than it is to create your own custom chip, unless you are going to have extremely high volume sales. When it costs $100,000 or more to fabricate a (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Lego colours
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(...) Maybe that was the case many years ago, but things have definitely changed over the years, causing LEGO to adopt new practices. (Just look at the introduction of flesh-toned minifigs, for example) (...) MUP = Mindstorms User Panel. A dozen or (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Mindstorms NXT programming languages
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(...) Another more likely option is that they put the ram and flash ram on the same custom chip as the ARM. Not only would this reduce the parts count, but it would save pinout and simplify the circuit board. (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: NXT and bluetooth enabled phones
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(...) Take a look at C++ - which has the Java-type Object-Oriented stuff whilst retaining all the things you liked about C. Some people (like me) claim that C++ has the best of both worlds. Other people (mostly Java enthusiasts) claim that it (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Alternate connectors
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(...) Try Deans or other RC car plugs: (URL) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Mindstorms NXT programming languages
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(...) Agreed. (...) Actualy, while I've not posted on this, I've certainly come close. A valid argument could be made that this is because I'm not a good programmer, but it's certainly a problem I've encountered. So, I've worked around it. There are (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Alternate connectors
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(...) I did finally discover a two pole version of the automotive hermaphroditic connector: (URL) But realize it is physically way too big :( I don't like the IDC connector as it is "ended" I.E. there is a male and a female version... but this might (...) (20 years ago, 13-Jan-06, to lugnet.robotics, FTX)
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| | 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 (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Mindstorms NXT programming languages
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(...) You've brought up the price point several times. If your analysis is correct (example: adding 64MB for a couple bucks), why don't you think LEGO did it? It would seem to me there are three options: 1) Your economic analysis is flawed. 2) LEGO (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: NXT and bluetooth enabled phones
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Have you seen the word "applet"? I guess Peter isn't talking in-html scripting, but real java... I'm familiar with both C and Java... I was first introduced to Java, and didn't have real problems with it - it did everything it had to do, and the (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Mindstorms NXT programming languages
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(...) The size of the flash on the NXT is ridiculously small compared to almost any other consumer-grade embedded systems. Look at cheap digital cameras, PDA's, handheld game systems, thumb drives, MP3 players and cell phones. Name one of them with (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Lego colours
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(...) I read that too - but there was a discussion about this on the Lego entry of Wikipedia and it seems that this may just be urban legend. Consider the VAST number of military parts that Lego makes - there are Lego guns, rockets, knives, swords, (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | RE: Mindstorms NXT programming languages
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(...) pathetic. On the contrary, the NXT brick has an enormous amount of memory! On the RCX, there's 6K of memory for user programs and datalog in the standard firmware. I can't recall ever seeing a post with a complaint that a NQC program doesn't (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Lego colours
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Someone posted here about a month ago saying that they didn't really like the Lego colours and would swap all of his for gray bricks given the chance... There was a show over Christmas in the UK about classic toys and, no surprise, Lego was (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Mindstorms NXT programming languages
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In fairness, although the NXT has a small amount of memory, you're talking about porting a high level interpreted language like Python to a low-cost embedded platform. For my sins, my day job consists of developing code that must cross compile (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: Mindstorms NXT programming languages
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(...) Well, on my Linux box, the main Python interpreter is in a library called 'libpython' with a teeny-tiny main program running the command line version. The library is about a Megabyte - and depends on other stuff from other libraries. This is (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: GBC and NXT...so bright I gotta wear shades
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(...) I have built a GBC ball counting module, that work perfectly well. The trick is to use a LEGO lamp in front of a light sensor, with the balls passing between them (you must also be sure that balls arrive one at a time). Using NQC events based (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: localization (was re: GPS)
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(...) That's very clever. How well did it work? How directional are the LEDs? How many beacons did you need? How did you arrange your mirrors? Peter (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: localization (was re: GPS)
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(...) in order to get (...) That only works if you have one mobile bot. With more than one, they interfere. A better method might be to have each beacon listen to the other beacons so each transmits in turn (with a fixed delay so they don't (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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| | Re: NXT - ARM7's and USB
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(...) Yes, I also expect that. Another hypothetical option for sensors/motors might be HID, you can refer to physical properties there. Maybe some firmware upload protocol. So maybe you are right and it contains several USB devices with an internal (...) (20 years ago, 13-Jan-06, to lugnet.robotics)
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