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DAC2 HD not working, while DAC+ and Digi+ Pro do work?!

fbonacic

July 09, 2021 18:31

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Hello,

 

I'm using your Digi+ Pro, DAC+ and DAC2 HD products together with Volumio, Nanosound (by Nanomesher) and GPIO buttons plugin.

I made 3 pcs of these with 3 different boards mentioned above :

https://ucdesignplay.blogspot.com/2021/06/didital-audio-streamer.html 

 

All connections to oled screen and buttons are the same, BUT DAC+ and Digi+ Pro cards working and DAC2 HD not working.

Can you tell me the reason/difference why is this so? What to do to make DAC2 HD work with this plugins and additional hardware like DAC+ and Digi are working?

With no plugins installed DAC2 HD works, but can't figure out what is the difference.

I'm using raspberry pi 3B+ and Volumio.

 

Thanks for great products otherwise :)

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3 comments

• 0
  
  HiFiBerry team July 10, 2021 16:48

  You're probably using a GPIO or I2C address that the DAC2 HD uses.
  You can find the GPIOs here:
  https://www.hifiberry.com/docs/hardware/gpio-usage-of-hifiberry-boards/

• 0
  
  fbonacic July 10, 2021 19:11

  I see. But please correct me if I'm wrong, I have the same pin connections for DAC+, Digi+ Pro and DAC2 HD.

  I don't see DAC2 HD uses any more GPIOs than DAC+ and Digi+ Pro.

  That is confusing me. Why these 2 work fine and DAC2 HD don't?

• 0
  
  HiFiBerry team July 11, 2021 06:24

  It can be also other I2C devices or other things that impact GPIOs. I simply can't say. The Pi doesn't have bus system that allows different hardware to work together. While this might work in many cases, it's not guaranteed. To find out what's the problem in your system, you would need to do some in-depth Linux and electronics debugging.