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Off grid rpi dac

Discussion in 'd.i.y.' started by sq225917, May 7, 2019.

  1. 337alant

    337alant Negatively Biased

    Thanks Si, have to get mine up and running

    Alan
     
  2. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Ah it just occurred that your board is no doubt all SMD....
     
  3. sq225917

    sq225917 situation engineer

    [​IMG]
    Opamps are socketed...
     
    Last edited: May 16, 2019
  4. Arkless Electronics

    Arkless Electronics Trade: Amp design and repairs.

    Well if you want any give me a PM. They seem nothing special to me...
     
  5. 337alant

    337alant Negatively Biased

    I can see this project ending up the size of a kitchen table like the buffalo Dacs LOL :D:rolleyes:
     
  6. sq225917

    sq225917 situation engineer

    Alan, which bits did you order?
     
  7. 337alant

    337alant Negatively Biased

    Si I only have a RPI 3B / Audiophonics Sabre V3 and a amplifier board which I cant remember the name of right now
    I was refering to your RPI dac set up it seems to be growing

    Alan
     
  8. sq225917

    sq225917 situation engineer

    It's the same size it was out of the box, but it will end up with at least one extra reg supply on it, maybe 3.
     
  9. sq225917

    sq225917 situation engineer

    Treated the dac board to some love today, supercapped each rail. Sound quality has nose dived currently.
     
  10. Dowser

    Dowser Learning to bodge again..

    What do you mean by supercapping Si? Additional uF? IME it normally takes a couple of hours, and gets incrementally better thereafter
     
  11. sq225917

    sq225917 situation engineer

    Yup, big ass 1.5f caps right at the load. It takes 10 minutes for the leds to go out after I disconnect it now.
     
  12. Dowser

    Dowser Learning to bodge again..

  13. sq225917

    sq225917 situation engineer

    |Sadly I'm getting all sorts of ****ery out of this now. it won't work at all with upgraded clocks, drops out, stutters, loses wifi- whihc is just plain weird. No doubt I've done something wrong, and it was sounding so fine.
     
  14. sq225917

    sq225917 situation engineer

    So take it round to misterdogs and it works fine. His router is six inches from his hifi rack though. So I've bought a repeater, which will sit 6 inches from my dac and connect via short cat5.

    Currently loading music to ssd.
     
  15. Dowser

    Dowser Learning to bodge again..

    Let us know what you think please Si
     
  16. sq225917

    sq225917 situation engineer

    Based on Paul's at his house it's one of the best dacs I've heard. I suspect itll run a fully regged buffalo 9038 close, though I bet the mercury is a better iv.

    It sounds just as good at mine, when it's worked. A fun project, but its 600 quid all in, almost 800 if you include ssd and interface board.
     
  17. sq225917

    sq225917 situation engineer

    All working flawlessly now. Just struggling with getting files onto ntfs ssd from exfat hd and mac hd in laptop, lots of double copying.
     
  18. sq225917

    sq225917 situation engineer

    Finally sorted, dumped Volumio for Moode. Drive scanned in about 3 minutes, artwork found and downloaded. Web interface is rock solid and it sounds perfect.

    I may even splurge for the Lundahl output trannies now.
     
    337alant and Dowser like this.

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