 | | Re: NXT to NXT communication?
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(...) (URL) (19 years ago, 6-May-06, to lugnet.robotics)
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| | Re: NXT to NXT communication?
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(...) <snipity> Jim (...) Did you say SDK?? Please elaborate on this... (19 years ago, 6-May-06, to lugnet.robotics)
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| | Great Ball Contraption
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Greetings all -- I am officially introducing www.greatballcontraption.com. It presents a good cross-section of information, images and links related to this crazy obsession. My wife wants to be a soccer mom someday...well she has been for the past (...) (19 years ago, 6-May-06, to lugnet.robotics)
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| | Re: NXT interface
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(...) The memory used by a program while it is running is not the same memory used for storing the program (flash). There isn't any way that I know of at this point to find out how much memory a program uses while it is running or how much of (...) (19 years ago, 6-May-06, to lugnet.robotics)
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| | Re: NXT Sound Sensor
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(...) There is a curious 6th wire connection from the sound sensor which sends analog sound to the CPU. I am assuming that using some 3rd party firmware, it might be possible to digitize and process sound data. But I think turning the CPU into a DSP (...) (19 years ago, 6-May-06, to lugnet.robotics)
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| | Re: NXT interface
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(...) This is the on-screen programming system. It's pretty rudimentary, but it lets you build very simple programs with only your NXT (no computer needed). Slots 1 & 3 let you 'do' something, slots 2 & 4 essentially control how long that action (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT Sound Sensor
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(...) The raw mode still just returns one number - essentially the integrated sound energy, where the weighting function is determined by the sensor mode (dB or dBA) and is all done on-board the sound sensor itself, not in the NXT. (...) You only (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT Sound Sensor
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(...) Hmmm is there a "raw data" mode for the sound sensor? Seems to me, it may be possible (maybe not yet but one day) to write a program that does FFT analysis, as long as it can get the raw wave data from the sensor. I'm assuming the "tone mode" (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT interface
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(...) Sounds great! Are you able to determine how much memory a program takes up while it's running? And how much memory is free? (...) Hmmm the purpose of these slots are one thing thats not immediately obvious (to my old brain anyway), can you (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: Help getting up to speed on robot electronics
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(...) Hi Jeff, I am also in software, but have dabbled for years with the hardware side of things. Maybe a place to start on a little crash course in interfacing are the R. A. Penfold books, which have stuff on interfacing with a PIC Micro (but is (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT to NXT communication?
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(...) Yes just kinda murky now! There are still good opportunities for a wireless network of NXT's! One could write a program on a single master and control as many lower level NXT's as you could bring together! Like one general commanding three (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT to NXT communication?
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(...) OK...it looks like this messaging mechanism in (URL) is a little confusing. Steve cleared this up a bit in (URL) In the hierarchy he discussed, N0 has to go through N1 to talk to N2-4. This model can be extended to higher levels in a tree (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT memory limits
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(...) Is the sound quality similar to those "real" ringtones you get on new cellphones (think that's what they're called...)? Or is it closer to polyphonic? (19 years ago, 5-May-06, to lugnet.robotics)
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| | Help getting up to speed on robot electronics
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I'm a newcomer to robotics, with 30 years of experience in software and nearly nothing at all on the hardware / electronics side. I'd like to learn how to get stuff working with my Vex controller other than the Vex-branded parts -- things like (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT memory limits
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(...) So in theory, once the open-source firmware is released it could be hacked to support interfacing with the sound system in other ways (such as playing compressed mpg/ogg files or sound stream data)? (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT memory limits
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(...) See (URL) for the .rso file format. It is a modified .wav file. The only facility in the standard NXT firmware for playing sounds of any kind are playing a tone (frequency/duration) or playing a .rso file which has previously been uploaded to (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT memory limits
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(...) Most of the file extensions on the NXT start with .R and end with two characters which suggest the file type (SO for sound, XE for executable, TM for "try me", DT for datalog, etc...). A .RSO file is a massaged .WAV file. The .RSO file format (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT memory limits
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(...) Is it something like mp3 (compressed), wav (non compressed) or midi (instructions to play a tune rather than the tune itself)?? Luca (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT memory limits
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(...) Tim, I don't know of anyone who's done this, but I strongly suspect it can be done. and, a .rso file is what they call the robot sound file. Steve (19 years ago, 5-May-06, to lugnet.robotics)
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| | Re: NXT interface
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(...) In my experience, non-trivial programs written in NXTGL will use at least 10kb. Using my BrickTool utility to list the files on my NXT you get this output: C:\winapps\projects\...>bricktool /BT /COM=COM4 /Target=7 -listfiles (...) (19 years ago, 5-May-06, to lugnet.robotics)
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