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Picked up a Beaglebone black this evening smiley



Also received a big bag of various components from Tayda Electronics, arrived 10 days after I made the order.

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Long ago I had local geek friends and sometimes we would chip in as a group and buy a bunch of something that was cheaper in quantity. I know that's not a bright idea over the net but I also know that if enough people want a thing at a better price then one person has a chance to get rid of excess after buying a bundle.

I've done this locally in my poor neighborhood with MP3 players and it worked fine but those were all people I knew who did buy from me at cost when the players came in. I didn't get stuck and everyone got factory refurb Sansa players for $12 ea just in time for Christmas giving. Same player new at WalMart was over $30. Part of my aim then was to raise awareness about prices and group action, poor don't have to be so poor, but that did not get through so well as the only pro-active one was me even after making the point.

So I am here now and there's an item that when 100 are bought costs 5 Euros each but when less than 100 are bought costs 20 Euros each. It's an audio module that I believe could work well and easily (I struggle with some others< STILL) with or without an MCU. I plan to get one to test and if it's what I think, figure out how to buy 100. I know someone who will want 20 and I will want 5 to 10 but the rest, I need to see if there will be takers after the units arrive, knowing that shipping won't be free.

http://www.vlsi.fi/en/products/vs1000module.html

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VS1000 Module provides a quick and low-cost way to add high-quality analog stereo output to a system. It has industrial qualification and long term availability that makes it attractive for many applications.

Quote
    Plays audio from micro-SD card or internal SPI Flash (or both)
    Can be customized, both firmware and content
    Can copy audio content and update firmware from micro-SD card to internal Flash
    Triggered via USB, UART or IO pins
    Line-out or headphone stereo analog outputs with SNR>90dB (A-weighted)
    High-performance license-free Ogg Vorbis decoder
    Supports variable bit-rates and many sample rates
    Plays from internal Flash up to 20 mins, play time can be extended to several days by using micro-SD card
    Firmware customization tool VSIDE is available for free
    Single power supply 3.4...5.5V, Note: IOVDD is generated from internal regulators, IO pins are not 5V tolerant!
    Low-power operation
    Industrial temperature range

Note that the IO pins are 3.4V only, need voltage leveling to use. But it has USB and UART IO which I'm pretty sure that USB is always 5V and I think (please help here!) that UART is the same 5V as our serial and software serial.

Anyhow this is just to see how the idea is received.
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Would be willing to go in on a minimum of 5, maybe 10.  Would be willing to help with the hardware as I am not confident on the software.  PM me and we can exchange emails.
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Note that the IO pins are 3.4V only, need voltage leveling to use. But it has USB and UART IO which I'm pretty sure that USB is always 5V and I think (please help here!) that UART is the same 5V as our serial and software serial.

No.  From the datasheet...

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Voltage at Any Digital Input Min: -0.3 Max: IOVDD+0.3 1 V
1 Must not exceed 3.6 V

It looks to me like the chip / board takes a 3.9 V to 5.5 V supply which is regulated to 3.6 V.  I think it would interface well with a 3.3 V board.


@GoForSmoke, what is the minimum number you want to deal with?
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I would have to find a way to get 100 at 5 Euros each plus any shipping.
That's already stretching it. I won't be asking for money up front.

If someone else with deeper pockets that wants a majority of the pieces wants to do the buy then I would hope to buy from them.

Looking on the web just now I see 5 Euros is US$6.42. I think that it packs a lot for that price.

Arduino will run 8 MHz on 3.6V won't it? I'd also be looking at if these things can simply be hooked up to button circuits as stand-alone.

I think that a guy like you would also be interested in a book like this:
http://www.vsdsp-forum.com/phpbb/viewtopic.php?f=11&t=36
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The book compiles together a lot of information, which otherwise would be difficult to piece together from different sources, such as datasheets, application notes and C header files. For example, it tells how to use all of the 22 input and/or output pins of the VS1053. The book explains the structure of the VS1053 audio path and teaches how to write VSDSP interrupt handlers in both assembly and C language. All of the examples use VSIDE, with step by step guide on how to obtain, install and use the graphical development environment.

In my current ongoing state it would put me to sleep but maybe some day again I could use the like of it.
 
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Here's a VS1003 module for 10 euros.
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Yes, I have already only I spent closer to 5 buying factory-direct. You know code and wiring that works for those by any chance? I don't. My docs are the chip datasheets and app notes that don't tell the module board so I have the same trouble that many do.

But that's not all. That unit has no SD or internal flash at all though yes, a better chip.

10 Euros for that as opposed to swinging a deal to get complete packages for 5 Euros.....
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I also have 2 of those VS1003 modules. I've found several Arduino libraries and code for that module but I can not get it to play an mp3 from an SD card. I can get it to work in midi mode though with the library from Maniacbug. (Maybe we should start a new topic about the module.)
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I also have 2 of those VS1003 modules. I've found several Arduino libraries and code for that module but I can not get it to play an mp3 from an SD card. I can get it to work in midi mode though with the library from Maniacbug. (Maybe we should start a new topic about the module.)

If you could then please, I don't get a peep out of the things. Maybe I burned them up for all I know.

I'll keep an eye out in the audio forum but if you could PM when/where you start then I would appreciate that.
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I would have to find a way to get 100 at 5 Euros each plus any shipping.

What is the minimum number you want to deal with per person?  Hypothetically, would you be willing to repackage and ship me one?
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Arduino will run 8 MHz on 3.6V won't it?

The processor seems to run fine at 16 MHz / 3.3V (though I wouldn't use it under those conditions to control anything that could cause damage).

Quote
I think that a guy like you would also be interested in a book like this:
http://www.vsdsp-forum.com/phpbb/viewtopic.php?f=11&t=36

Thanks.
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I would have to find a way to get 100 at 5 Euros each plus any shipping.

What is the minimum number you want to deal with per person?  Hypothetically, would you be willing to repackage and ship me one?


Why not? I expect to wind up with some singles, I just can't hang onto to many for long.

At this point I am just testing waters.
 

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At this point I am just testing waters.
I looked at the module and I'm a bit puzzled. If I understand it correctly this module can play 20 minutes of audio from internal flash  smiley-yell
That would be more than enough for most of my projects to give back audio feedback.
But this module has so many pins  smiley-eek? How many control pins from the Arduino would I need if I wanted to play <=255 files at arduino command?
What would I need to get the files in the flash?
If it would be less than 5 pins: I'm in for at least 20 of those at 5 euro each plus transport.  smiley-mr-green

Best regards
Jantje

ps As the pins are not 5 volt tolerant some cheap bulk logic translators would make it a service deal  smiley-lol
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At this point I am just testing waters.
I looked at the module and I'm a bit puzzled. If I understand it correctly this module can play 20 minutes of audio from internal flash  smiley-yell
That would be more than enough for most of my projects to give back audio feedback.
But this module has so many pins  smiley-eek? How many control pins from the Arduino would I need if I wanted to play <=255 files at arduino command?
What would I need to get the files in the flash?
If it would be less than 5 pins: I'm in for at least 20 of those at 5 euro each plus transport.  smiley-mr-green

Best regards
Jantje

ps As the pins are not 5 volt tolerant some cheap bulk logic translators would make it a service deal  smiley-lol

You know more EE than I am ever likely to, but here goes:

From descriptions at VLSI Solutions (Finland, I find that delicious) these DSP chips incorporate microcontroller capability in themselves. That would explain need for pins?
MCU's? They don't need no stinking MCU's! (with no apologies to Mel Brooks)

There is also the multiple interfaces.

IIUC the site, you can copy SD card to internal flash and back.

For better answers, here is the site forum:
http://www.vsdsp-forum.com/phpbb/

Level shifters --- I bet there's more than I have noticed, the 74HCT4050 looks to be "bomb"(extra good):
http://dx.com/p/jy-mcu-5v-3v-iic-uart-level-2-way-converter-module-adapter-178301
http://dx.com/p/jy-mcu-5v-3v-iic-uart-spi-level-4-way-converter-module-adapter-178286
http://www.futurlec.com/74HCT/74HCT4050pr.shtml
http://www.futurlec.com/4000Series/CD40109.shtml

 
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I found a dutch article where someone used it for a train. These modules are super cool.
You need an additional amplifier. The files can be selected in several ways (depends on the firmware) With a sd card that can hold files and a new firmware that looks pretty useful.
The Dutch guy stated the power of the amplifier caused issues he said the module is "sensitive"
Out of the box the firmware stops the playing sound when a new sound is requested. He changed the firmware so he could mix up to 4 sounds.
Yes I want some. you can count me in
Jantje
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