 | | NXT memory limits —Jonathan Wilson
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| | | Now that the NDA has been lifted, can anyone confirm how much memory is available on the NXT? Also, can anyone confirm what CPU they are using (i.e. what flavor of ARM chip etc?) (19 years ago, 4-May-06, to lugnet.robotics)
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| | | | | Re: NXT memory limits —John Hansen
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| | | | (...) The documentation on the LEGO website is a good source: (URL) chip is the Atmel AT91SAM7S256 (URL) this helps, John Hansen (19 years ago, 4-May-06, to lugnet.robotics)
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| | | | | | Re: NXT memory limits —John Barnes
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| | | | | (...) I would add, for completeness sake, that there is also an ATMEGA48 in the NXT too. There are two main reasons for this. 1. The legacy sensor interface requires 5v ADC for the analog inputs. 2. The motor PWM needs some outboard help. The ATMEGA (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | | | | | Re: NXT memory limits —Ross Crawford
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| | | | (...) ROSCO (19 years ago, 5-May-06, to lugnet.robotics)
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| | | | | | Re: NXT memory limits —Steve Hassenplug
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| | | | (...) Yes. Successfully. There is already software available for converting .wav files. (thanks MDPs) Of course, they can't be too big. One of the first things I did was replace the goofy startup sound with a smaller one. There's also software to (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | | | | | Re: NXT memory limits —Tim Byrne
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| | | | (...) I understand the size constraints for storing long sound files on the NXT, but has anyone tried streaming sound over Bluetooth? -Tim (19 years ago, 5-May-06, to lugnet.robotics)
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| | | | | | Re: NXT memory limits —Tony Naggs
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| | | | | In article <IyrsyD.1qIr@lugnet.com>, Tim Byrne <sultan@KILL-the- SPAM.locehilios.com> wrote (...) Bluetooth is up to it, typical use is to connect a hands-free headset to a mobile phone. Stereo headphones are now available for listening to music (...) (19 years ago, 5-May-06, to lugnet.robotics)
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| | | | | | Re: NXT memory limits —John Hansen
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| | | | (...) 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)
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| | | | | | Re: NXT memory limits —Tim Byrne
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| | | | (...) 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)
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| | | | | | Re: NXT memory limits —Steve Hassenplug
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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 memory limits —Luca Bortolotti
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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 —John Hansen
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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 —Tim Byrne
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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 —Luca Bortolotti
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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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| | | | | | Re: NXT memory limits —John Hansen
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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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