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karawin / Ka-Radio32

esp32 version of Ka-Radio (https://github.com/karawin/Ka-Radio) by jp Cocatrix
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vs1053 noise (solution) #167

Closed rolandinchania closed 4 years ago

rolandinchania commented 4 years ago

Browsing the internet I found a solution to remove noise and ground loop audio problems when useing the vs1053 dac board with an external audio amplifier.

https://electronics.stackexchange.com/a/186921

important: the wireing diagram at the and of the article. Don't use the GBUF signal as ground with an external amp because its for the headphone output. Use GND instead.

Big success for my project. !!!

karawin commented 4 years ago

Yes or simply a couple of isolation transformers.

rolandinchania commented 4 years ago

Thanks. I made 2 simple changes to my vs1053 board.

  1. cut the gbuf line
  2. add new groundwire (black)

vs1053

cheise commented 4 years ago

I would have the same problem, thanks for this solution. My solution:

vs1053mod

cu

rolandinchania commented 4 years ago

Thank you, it's cool !!!

rolandinchania commented 4 years ago

Thank you all.

Sera26 commented 3 years ago

Hello,

I really like your solution and want to perform it. But I have the red version of VS1053 board. Could you help me which lines need to be cutted and bridged? Thank you in advance.

vs1053

rolandinchania commented 3 years ago

 

 

Hi,

I don't know the board but similar to the green board I suggest:

Cut where the little black line is. then connect from the connector to ground.

for example ground is under the green dot when you remove the paint on the board.

Regards Roland

 

ps. I enclosed a picture

Sera26 commented 3 years ago

Hi,

Thanks for quick response. If I well understand...need to cut line of the current gnd of speaker jack and bridged to main GND of the board? Sorry but I can't see your picture...

rolandinchania commented 3 years ago

exactly 😊-- Sent from my Android phone with WEB.DE Mail. Please excuse my brevity.Am 30.03.21, 20:01 schrieb Sera26 @.***>:

Hi, Thanks for quick response. If I well understand...need to cut line of the current gnd of speaker jack and bridged to main GND of the board (your dots)? —You are receiving this because you modified the open/close state.Reply to this email directly, view it on GitHub, or unsubscribe.

Sera26 commented 3 years ago

No problem :) Thank you for support :)

cheise commented 3 years ago

vs1053

i think that's the solution ;)

Sera26 commented 3 years ago

Yes, it is, thank you very much :)