Dummies Guide to Pi2AES! Throw away your PC or laptop.

Discussion in 'Digital: DACs, USB converters, decrapifiers' started by purr1n, Jan 29, 2020.

  1. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    Shipping the first 40 tomorrow (11/5/2021). Another 40 next week and so on. Should be wrapped up by end of November or shortly there after.
     
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  2. mhanism1

    mhanism1 New

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    Hello Michael - Any updates on the upcoming Mercury? Thanks!
     
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  3. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    Waiting for the re-spin PCB's to arrive and get built up. Black anodized cases are underway, but we will also offer it in clear acrylic (with metal sides). I expect to start pre-orders early December and shipping to begin by mid-January.
     
  4. mhanism1

    mhanism1 New

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    Awesome, thank you!
     
  5. MegaKen

    MegaKen New

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    Yea i finally got my pi2aes hat.. The guide here kinda sucks, or maybe some parts have changed since. The bottom screws are longer than the holes they go into, so the bottom panel is kinda flimsy. Plus the whole thing just looks like Santa's coffin.

    Or maybe it's my hands. Eventually I put it together and set it up, and holllllyy fucksnacks! I did not think my system could sound so rich and present omg.

    [​IMG]

    Ps. Any way to dim the lights?
     
  6. Lasollor

    Lasollor Friend

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    I’ve also just received a new Pi2AES yesterday. I don’t know why people people say that the bottom screws are too long. They fit perfectly on my unit, but you need a screwdriver and some force, then they go all the way in. They won’t go in all the way if you only try to use your hands. (Unless some units were shipped with wrong screws.)
     
  7. dasman66

    dasman66 Self proclaimed lazy ass - friend

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    been covered ad infinitum.

    Options:
    Get the black case
    Paint the inside of the case before assembling
    Software hacks
    sharpie or paint over the LED's before assembly
     
  8. androxylo

    androxylo Acquaintance

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    Leds may increase jitter (or at least increase the jitter nervosa). They should be disabled programmatically, mentioned several times somewhere in this thread. And a bunch of other stuff can be turned off or scaled down...
     
  9. dasman66

    dasman66 Self proclaimed lazy ass - friend

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    ^^
     
  10. Beefy

    Beefy Friend

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    I find this hard to believe. LEDs are used as voltage references in some of the highest end audio power supplies, and for biasing input tubes in many high end amps. Got a reference to any kind of measurement for this?
     
    Last edited: Nov 14, 2021
  11. loadexfa

    loadexfa MOT: rhythmdevils audio

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    What about the guide is inaccurate? I haven’t looked at it in a while but found it very thorough and useful when I reviewed it.

    You should have longer and shorter screws (longer for the top panel and shorter for the bottom). It’s possible you were sent all long screws but I’d check to make sure the top screws aren’t shorter before asking Michael Kelly to send you a set of shorter ones.

    I had good luck dimming the LEDs by covering them with electrical tape plus the dark case. It takes a bit of effort though.
     
  12. hpamdr

    hpamdr New

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    I'm running piCore with soundcheck kit but i would like to add a power switch on the device to not have to unplug/plug to shutdown.
    Is it possible to have such hard power switch to turn on/off pi2aes and rpi4 ?

    --edit--
    My first guess is to use pins 13/14 psw / gnd but does the switch can also signal to some rpi GPIO to have shutdown signal ? (wake up should be done by powering up again )
     
    Last edited: Nov 14, 2021
  13. MegaKen

    MegaKen New

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    Oh, great; maybe this should have been mentioned in the guide :)

    I was mostly sarcastic about that part, I wouldn't care if it was a pile of human teeth as long as it does what it does.

    I know you can ssh into useroptions and turn off the rPi's leds one by one, maybe you can do that on the hat board..
     
  14. MegaKen

    MegaKen New

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    Awesome I'll look for it, thx
     
  15. coin777

    coin777 Acquaintance

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  16. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    No, no, no. The leds on the pi2aes do NOTHING to the sound. Also they are not controlled by software.
     
  17. dasman66

    dasman66 Self proclaimed lazy ass - friend

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    The device measures with extremely low jitter... with the LED's flashing merrily away. Unless the people doing the jitter measurements are disabling the LED's, it's nervosa in its purest form.
     
  18. hpamdr

    hpamdr New

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    Thanks !
    My question was not about led as the one on the pi2AES board are not blinking and not on the signal path so they do not alter the sound at all. (I reduced the light adding a light dimming film inside the black box )
    My concern is more general, It is to just have a switch on side of RPI4 + Pi2AES Hat box. ( using a switch on pin 13/14 works for the 24V and rpi 5V ) What i'm not sure is how i can signal shutdown and be sure that a minimal delay on capa can ensure smooth shut down.

    This is the kind of feature that would be great to have directly plugged on the pi2AES hat !
     
  19. Pancakes

    Pancakes Friend

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    Not the most elegant solution but you can always cut one of the wires from the PSU and put an inline switch on it.
     
  20. hpamdr

    hpamdr New

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    I have iee power chord with switch on it for other device. Here the concern is to be able to send shutdown signal to Rpi.
     

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