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Author Topic: cheap sound module: what version is this?  (Read 34327 times)
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Argentina
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Spanish:
Lo que te quiero decir es que mi modulo funcionó en ambos modos, serie y modo teclas. Te adjunto uno de los ad4 que se que funcionan.

English:
What I meant is that my module worked out in both ways, serial mode and key mode. I am attaching one of the ad4 that I really know is working.


* 0018.ad4 (3287.78 KB - downloaded 28 times.)
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Obrigado amigo, mas eu desisto. ja nao tenho mais o que fazer, pois até modifiquei o circuito e nao obtive sucesso.


Thanks buddy, but I quit. ja not have what to do, because even modified the circuit and not been successful.
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Argentina
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Finally did what I wanted to do from the very beginning with this audio module:



Entire post and source code here:
http://arduino.cc/forum/index.php/topic,110328.msg888895.html#msg888895
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Argentina
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Migrated to Arduino Mini Pro Artic Edition:





Will be optimizing the circuit as well the software. But have to report that audio module and library I wrote did work like a charm.
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Italy
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cool!
did u get a replacement or did you buy another module from the same seller? are u still using the 5volts?
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Argentina
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as a matter of fact, that one is the second one I bought. Still waiting for a replacement. 2nd one is working on 3.3v. did not dare to turn to 5v yet until I get a replacement for the first one.  smiley-razz
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Italy
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how is the sound quality? the sound is not very loud on the video so i can't judge. As you can hear on my past test-video there is a lot of noise background (i was using also a mini-amp module)
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Argentina
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Pretty decent. Played a few tracks from a PSB album I had converted and they were very cool and loud. I also bought an amp:



Still waiting to receive it. Keep you posted.

PS: Volume can be modified by software in this board.
« Last Edit: August 15, 2012, 04:41:44 pm by the-rebel-agent » Logged

Italy
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that amplifier uses another PAM IC thanthe one i bought (PAM8403)

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Argentina
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Here you have the eBay link:
http://www.ebay.com/itm/170850491058?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

What attracted me from this amp was that is quite small and have two buttons to control the volume. AND could be controlled by Arduino.
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Italy
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ok i see, same output and D-class as mine, seems a step forward for the voltage (a range 3.3-5.5v instead of 5v only), the digital control of vulume and the size.
Also a bit better Signal/Noise Ratio.

http://www.datasheetdir.com/PAM8803NHR+download
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Argentina
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Got it today. REALLY small. Soldered pin headers and tried to connect it. I could not, cause I did not have coupling capacitors as recommend in the Wtv020sd16p datasheet. Unfortunately, tomorrow I am flying to Orlando, so won't be able to test it until September. Keep you posted guys.
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how is the sound quality? the sound is not very loud on the video so i can't judge. As you can hear on my past test-video there is a lot of noise background (i was using also a mini-amp module)

Did you get your WTM module to work. Mine finally showed up but I am not sure how to connect it. I would like to see if there is a sound quality difference
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Hi all,

I also bought these modules.

I want to use them with a 5V Arduino.
As I have V1.5, I can choose between 3,3V and 5V.

But I don't see any 3,3V regulator on the board. As a result, how can the board supply the SD card with 3,3V (remember that SD cards only works with 2,5V-3,6V !) ?

Can anyone confirm that if I change the strap position from 3,3V to 5V and supply it with 5V, my 3,3V SD Card won't burn ?

Other questions, do someone have tried 2GB cards (not 4Gb or more SDHC card) with a 1GB partition ?

Thanks
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Italy
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Hi all,

I also bought these modules.

I want to use them with a 5V Arduino.
As I have V1.5, I can choose between 3,3V and 5V.

But I don't see any 3,3V regulator on the board. As a result, how can the board supply the SD card with 3,3V (remember that SD cards only works with 2,5V-3,6V !) ?

Can anyone confirm that if I change the strap position from 3,3V to 5V and supply it with 5V, my 3,3V SD Card won't burn ?

Other questions, do someone have tried 2GB cards (not 4Gb or more SDHC card) with a 1GB partition ?

Thanks
the IC datasheet says "If MCU is 5V powered , you have to connect 470Ω resistors between MCU and WTV chips cables , because it is 3.3V power the WTV chip."
so i presume there are resistors on the 1.5 version of this module because mine did not burn and works fine as you can see on my previous videos. But you must change the soldered pin to 5v.
The problem is that the sound quality is low, there is background noise, it doesn't support the much more versatile UART serial communication RS-232 of arduino.
« Last Edit: September 12, 2012, 08:23:35 am by onesky » Logged

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