Peter Bindels

@dascandy42

Making the world of C++ simpler. He/him.

Vrijeme pridruživanja: kolovoz 2014.

Medijski sadržaj

  1. prije 10 sati
    Odgovor korisniku/ci
  2. 29. sij
    Odgovor korisniku/ci

    We'll call it double dutch when they replicate our raised bicycle roundabout.

  3. 27. sij
    Odgovor korisnicima

    I need new glasses. How did I not see this yesterday?

  4. 27. sij
    Odgovor korisniku/ci

    It wants to break free

  5. 27. sij

    I accidentally a new rabbit hole -

  6. 24. sij

    Then that exports the sound to a DAC, the pcm5101A. That is then amplified with a 50W amplifier tpa3116 and sent on the white 4pin connector to the speaker and tweeter.

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  7. 24. sij

    There is an unmounted qfn16 spot, which to me feels like a communication chip spot. To be checked with a scope.

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  8. 24. sij

    Computer is a MCIMX6X2EVN10AC, a cortex A9 at 1GHz with a cortex M4F coprocessor at 200MHz. It has a 512MB Nanya DDR3 memory chip in BGA and a 512MB Spansion nand flash on the back.

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  9. 24. sij

    The communication is a pci-e slot with a common but not COTS wifi chip. Uses a Mediatek mt7615n wifi chip. Antenna connections on the left, normally to the left and right of the tweeter.

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  10. 24. sij

    That connects to the whole rest of the board, in three sections - audio/analog left, computer in the middle and communication on the right.

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  11. 24. sij

    At the bottom you see the 220V section. First a bit of PFC, then a bridge rectifier DF08S, then a flyback SMPS powered by a rt7781s. Big cap over the rectified 220, two big caps post-rectifier for handling big spikes.

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  12. 24. sij

    Second Sonos thread. How it works. So we have a mainboard.

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  13. 23. sij
    Odgovor korisnicima i sljedećem broju korisnika:
  14. 23. sij
    Odgovor korisnicima i sljedećem broju korisnika:

    Some more photos

  15. 23. sij
    Odgovor korisnicima

    Looks like standard wifi card on pcie. Also, apparently they include a quarter of a glue stick, unmelted, in the BOM??

  16. 23. sij
    Odgovor korisnicima

    Plus electronics -

  17. 23. sij
    Odgovor korisnicima

    Now this looks better.

  18. 23. sij
    Odgovor korisnicima

    Also, the top is glued on at the front and back. Thankfully ships these in a 6pack.

  19. 23. sij
    Odgovor korisnicima

    Back is now loose but wedged under the top. Let's do that first. Sync button is glued down flexible pcb. Eesh.

  20. 23. sij
    Odgovor korisnicima

    Front has two tx8 to hold the tweeter in. Trying the 4 screws in the back first. These are all normally under a velvety material, the front ones under a very thin tape.

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