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Author Topic: * MP3 Shield * - Rogue Robotics rMP3  (Read 36966 times)
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Toronto, ON
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Well, I started a playground page to start documenting the pins used:

http://www.arduino.cc/playground/Main/ShieldPinUsage

(see http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1273208396)

b
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Ok. Nice. I will see what I can help with later.

Mowcius
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I read all the replies to this post and the site details but am still not sure about 2 things.

I was reading a post about this being able to break out frequencies to over 20 bands, any details on that?

Can the rMP3 read music directly via an input jack or does this only work with mp3 files loaded on the SD Card?
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I was reading a post about this being able to break out frequencies to max 23 bands, any details on that?
It's still in beta. It can be done and brett will link you to the code if you want it. As far as I know, the beta is being released soon with more examples as to how to do this and other things.

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Can the rMP3 read music directly via an input jack or does this only work with mp3 files loaded on the SD Card?
It doesn't have an input jack but as it plays its own music I'm not sure why you'd want to input music to it.

Mowcius
« Last Edit: July 12, 2010, 08:50:59 am by mowcius » Logged

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... I'm not sure why you'd want to input music to it.

I want to make something anyone can come plug their own mp3 player (or any device or microphone) and have it split the bands to dance and/or show a simple EQ.  

The EQ chip from blip does 7 bands and that is good enough for most needs, but wanted to see if this device could provide more details.  It can, but not for my specific case of needing audio input.  I realize this product is not made for that purpose and it may pull those details from the mp3 file, so I can see how it would not fit my current need .. but wanted to ask to be sure.

Thanks for the details.
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I want to make something anyone can come plug their own mp3 player (or any device or microphone) and have it split the bands to dance and/or show a simple EQ.  

The EQ chip from blip does 7 bands and that is good enough for most needs, but wanted to see if this device could provide more details.  It can, but not for my specific case of needing audio input.  I realize this product is not made for that purpose and it may pull those details from the mp3 file, so I can see how it would not fit my current need .. but wanted to ask to be sure.

Thanks for the details.
No problem. It does not sound like it is suitable for your purpose.

Mowcius
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Yeah.  The spectrum analyzer on the rMP3 is in the digital domain only (it's done internally on the VLSI chip).

FYI: the beta will be posted tomorrow.  It includes the custom 1 to 23 band spectrum analyzer (with peak values), and mp3 track time retrieval.

b
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New beta firmware with some fixes and new features can be found here:

http://code.google.com/p/rogue-code/downloads/detail?name=rMP3-100-02-b002.zip

You'll also need to download the latest RogueMP3/RogueSD libraries to get at the new features.

New features:
  • added: PC Y command to retrieve spectrum analyzer output (PC Y P for peaks, PC Y S to set bands).
  • added: IC T command to retrieve track length.
  • added: low power mode.
  • fixed: hang on boot (vs10xx init problem).
  • fixed: wildcard handling in listing commands.
  • fixed: 7 bit trigger repeats if held low.
  • fixed: playback speed change - 250% now acceptable, playback time updated.
  • fixed: temp settings not loaded from config file.

[media]http://www.youtube.com/watch?v=DH8HDMvpXpU[/media]

The LCD example is included in the latest RogueMP3 library.

More documentation forthcoming at our WikiDocs - just yell at me if you need help with anything.

b
« Last Edit: July 13, 2010, 10:59:32 pm by bhagman » Logged


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smiley-grin yippee

Now I just need to find some time to play with it.

Mowcius
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Nice stuff.  This is on my hot list for sure.  

Side note:  In the video - is that one of those off the shelf POV clocks (not sure the name) and you have modified it?  
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 want to make something anyone can come plug their own mp3 player (or any device or microphone) and have it split the bands to dance and/or show a simple EQ.  

The EQ chip from blip does 7 bands and that is good enough for most needs, but wanted to see if this device could provide more details.  It can, but not for my specific case of needing audio input.  I realize this product is not made for that purpose and it may pull those details from the mp3 file, so I can see how it would not fit my current need .. but wanted to ask to be sure.

Thanks for the details.
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In the video - is that one of those off the shelf POV clocks (not sure the name) and you have modified it?
Having chatted to him, I can say that it is an off the shelf pendulum clock that has had the display hacked to run the clock and rMP3 visualisations.

Mowcius
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Yeah, I'm putting a page together with all the details about that clock and then I'll show it off.

b
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Hey,

I bought a couple of rmp3 modules recently. Is it possible to play multiple audio tracks at once using these shields? I would really like to do this.
thank you!

kedar
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I bought a couple of rmp3 modules recently. Is it possible to play multiple audio tracks at once using these shields? I would really like to do this.
thank you!
The shields can be stacked and more than one can be used on one arduino.

By cutting in between the pads (the ones before pins 6&7) you can then connect those lines to some other pins of your chosing. Then you can define a second instance of the rMP3 board and control both by sending serial commands to each on individually.

Mowcius
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