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Topic: Arduino library for PAM8803 audio amplifier module (Read 8130 times) previous topic - next topic

creatrope

On the 3W PAM8803 module, which PIN is the RST input?

http://www.ebay.com/itm/Mini-2-3W-4-PAM8803-Class-D-Audio-Amplifier-Board-For-PIC-AVR-/170850491058
I'm not seeing a schematic from the board pinout.

There's 3 different GND inputs - I've tried all of them.

thanks!

creatrope

Since there is no obvious reset RST pin brought out to the connectors I used the SDN pin. This pin must be kept at logic high for the module to work. The library reset function toggles it low then leaves it high so it appears to be acting as a Reset.

Pin 15 RST on the pam8803 module i have appears to be tied to GND on my module so I don't see how'd you'd use that as a reset and retain the connection to GND.

If you are getting unreliable odd behavior as I did try putting LEDs on Vup, Von, and reset and make sure you can see them changing.

-rrhb

the-rebel-agent


On the 3W PAM8803 module, which PIN is the RST input?

http://www.ebay.com/itm/Mini-2-3W-4-PAM8803-Class-D-Audio-Amplifier-Board-For-PIC-AVR-/170850491058
I'm not seeing a schematic from the board pinout.

There's 3 different GND inputs - I've tried all of them.

thanks!

Yes, I used SND too as reset method.

JustDoc

So, I'm trying out the amp, and right now I'm just trying to get it to work with the sound module, unfortunately, it's not working.  I have tested it so far with just the WTV020 sd 16p,and I can get it work there, then I run my DAC+ line from the wtv into the INL and run the speaker to the LO+ and LO-. 

I have 5v going to the 5v, all 3 gnds are grounded.  I'm not using the vup/Vdn at all yet, I'm just trying to get some noise out of it.  Is there a really good wiring schematic out there I can go off of?

Thanks for all your work with this module
There are areas where untrained people may work effectively and with limited equipment. Our pupil doesn't need a big laboratory to do this, he needs freedom; he needs encouragement.
Edwin G. Land, Polaroid Corp 1957

Patches

Hello everybody,

I would like to add sound to my Tardis using a WTV020 and the PAM8803 controlled by a Mini Pro - unfortunately when searching for the PAM8803 module shown in this thread I can only find is this one:
http://www.ebay.com/itm/Mini-2-3W-4-PAM8803-Class-D-Audio-Amplifier-Board-For-PIC-AVR-/170850491058?pt=LH_DefaultDomain_0&hash=item27c77b9ab2
Seems extremely expensive and is far out of budget for me.

Do you have any source for this module?

Cheers
  Johannes

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