 | | Re: NXT interface
|
|
(...) 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)
|
| |
| | Re: NXT Sound Sensor
|
|
(...) 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)
|
| |
| | Re: NXT Sound Sensor
|
|
(...) 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)
|
| |
| | Re: NXT interface
|
|
(...) 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)
|
| |
| | Re: Help getting up to speed on robot electronics
|
|
(...) 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)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) 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)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) 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)
|
| |
| | Re: NXT memory limits
|
|
(...) 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)
|
| |
| | Help getting up to speed on robot electronics
|
|
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)
|
| |
| | Re: NXT memory limits
|
|
(...) 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)
|
| |
| | Re: NXT memory limits
|
|
(...) 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)
|
| |
| | Re: NXT memory limits
|
|
(...) 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)
|
| |
| | Re: NXT memory limits
|
|
(...) 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)
|
| |
| | Re: NXT memory limits
|
|
(...) 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)
|
| |
| | Re: NXT interface
|
|
(...) 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)
|
| |
| | Re: NXT Sound Sensor
|
|
(...) Which it does pretty well, maxing out around 100 dB. (...) Not as much (yet!) as I'd like. The sound sensor has two modes familier to folks who work with dB noise levels. One is a "flat" frequency response curve, and one is a frequency (...) (19 years ago, 5-May-06, to lugnet.robotics)
|
| |
| | NXT Sound Sensor
|
|
The LEGO Education blog had some information a while ago on the NXT sound sensor. In addition to distinguishing decibel levels, they mentioned it featured "tone recognition". Can someone in the know comment on this feature. Can the sound sensor (...) (19 years ago, 5-May-06, to lugnet.robotics)
|
| |
| | Re: NXT memory limits
|
|
(...) Having no knowledge of the NXT, I'm not sure what a .RSO file is. (a quick Google search of .RSO and sound takes me to the Raleigh Symphony Orchestra, and that seems way off LOL ) However, let me give an example of technology I am aware of. (...) (19 years ago, 5-May-06, to lugnet.robotics)
|
| |
| | Re: NXT memory limits
|
|
(...) What do you mean? It is possible to transfer files between a PC and the NXT over bluetooth so you can "stream" a .RSO file but doing so at 64 bytes per packet would be rather cumbersome. And playing the file on the NXT could not begin until (...) (19 years ago, 5-May-06, to lugnet.robotics)
|
| |
| | Re: NXT to NXT communication?
|
|
(...) I can't figure out a easy way for me to test PC-to-NXT timelag, but I tried some simple bench tests on NXT-to-NXT. This is just the old standard of two timed loops (10,0000 interations), one empty, and one with a single block (or two), and (...) (19 years ago, 5-May-06, to lugnet.robotics)
|
