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Topic: cheap sound module: what version is this? (Read 38988 times) previous topic - next topic

the-rebel-agent

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.


wanderlg

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.

the-rebel-agent

Finally did what I wanted to do from the very beginning with this audio module:

http://www.youtube.com/watch?v=AYNur8XLJqQ

Entire post and source code here:
http://arduino.cc/forum/index.php/topic,110328.msg888895.html#msg888895

the-rebel-agent

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.

onesky

cool!
did u get a replacement or did you buy another module from the same seller? are u still using the 5volts?

the-rebel-agent

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.  :P

onesky

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)

the-rebel-agent

#142
Aug 15, 2012, 11:39 pm Last Edit: Aug 15, 2012, 11:41 pm by the-rebel-agent Reason: 1
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.

onesky

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


the-rebel-agent

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.

onesky

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

the-rebel-agent

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.

bobafett1


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

Sn4ke

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

onesky

#149
Sep 12, 2012, 03:22 pm Last Edit: Sep 12, 2012, 03:23 pm by onesky Reason: 1

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 470? 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.

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