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

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

  1. YMO

    YMO Chief Fun Officer

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    @tommytakis and others know I'm legit. @rtaylor76 can contest my helpfulness as well. Note: AssetUPnP is paid software, you pay one time fee and it works on anything.
     
  2. Azimuth

    Azimuth FKA rtaylor76, Friend

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    It's true... @YMO is the UpNp whisperer.
     
  3. earnmyturns

    earnmyturns Smartest friend

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    When I had a non-home office (back in the pre-covid era) I used moOde in the office, with a USB SSD that I synced via sneakernet with my home music collection, where I use Roon, fairly regularly. I'd have preferred to have Roon at the office, but regardless of cost I could not because of the office's security constraints anyway.
     
  4. rlow

    rlow A happy woofer

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    Hey @Michael Kelly, would a 12v 2A power supply work with the Pi2AES (I have the OG version)? I think you’ve said before 3A is the recommended, but what if I was powering the RPi side separately? Any danger in trying a 2A supply with it? Sorry if this was asked previously.
     
  5. hifiandrun

    hifiandrun Almost "Made"

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    Sorry to jump in. I have the OG PI2AES as well. There is no potential danger using a 12V 2A DC supply. The 3A is needed to reach the Raspberry PI 4B full spec - for the board CPU and all 4 USBS (each USB at 0.5A, a total of 2A). The Pi2AES itself draw less than 100 mA. Also, just a FYI - I tried a RadioShack 12V switching PS, it sounded awful.
     
  6. rlow

    rlow A happy woofer

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    Beauty, thanks! Actually I hadn’t thought that through, I knew the Pi was the one that had the higher power draw requirements and that this was likely for supporting peripherals etc. I’ve also tried some generic supplies as well and they sounded like crap. Going to try to get my hands on a 12v iFi Power X supply.
     
    Last edited: Feb 5, 2021
  7. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    At the lower voltage the onboard 5V switching regulator runs harder. It must increase its cycles in order to provide the same power. But the higher voltage allows the regulator to run with fewer cycles thus producing less overall noise.

    Having said that be on board ldo's should filter out pretty much anything unless it is super bad.
     
  8. jexby

    jexby Posole Prince

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    Exit stage left....
    if I didn't mention it earlier, have been using the original iFi iPower 5V on Pi2AES with great results from Day 1.
    no problems or hiccups. (in short term)

    edit: don’t plug in the iFi iPower 5V into the pi2AES and void warranty.
    because- electrics.
     
    Last edited: Feb 5, 2021
  9. rlow

    rlow A happy woofer

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    Yeah I heard this guy was caught making uncertified power supplies, so watch out.

    upload_2021-2-5_15-26-26.jpeg
     
  10. stevej

    stevej New

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    Just curious, you're able to power both the PI2AES and PI with 5V power supply? I was wondering if I could use my existing allo Shanti LPS but thought it's 5V was not sufficient.
     
  11. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    To just power the pi? Or are you tying it into the header, thus violating the warranty (shame on you)? ;)
     
  12. jexby

    jexby Posole Prince

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    Exit stage left....
    uh i followed base install instructions without moving pins, so the iFi iPower is going into the pi2AES.
    what spec did i miss by not ordering and using the switcher?

    duh- i guess like 5V vs 24V, and wattage?

    double edit: will shutdown the pi2AES and get the proper 24V to avoid the over cycling of regulator.
     
    Last edited: Feb 5, 2021
  13. Biodegraded

    Biodegraded Friend

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    This one is working well for me:

    https://www.jameco.com/z/DFU240050F...le-Output-24-Volt-0-5-Amp-12-Watt_174879.html
     
  14. stevej

    stevej New

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  15. svampebob

    svampebob New

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    Michael; is it possible to feed the pi2aes clean 5v on pin 2 and 3 on the expansion header? Thanks
     
  16. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    It is possible. But, this bypasses the protection circuitry and thus voids the warranty.
     
  17. svampebob

    svampebob New

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    Thanks, hard to beat that support! :) And sorry thats what you wrote already yesterday. I dunno, it may be tempting none the less since a Shanti will take care of everything then
     
  18. Raicorl

    Raicorl Acquaintance

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    Sorry if I might repeat this question again and again. Would 12 V 3A power supply work fine with Pi2AES + 7inch official touch screen? Im using first revision one + Pi4. Thank you.
     
  19. Michael Kelly

    Michael Kelly MOT: Pi 2 Design

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    The earlier vision would have been tested at 12v. It was only when we noticed a scattering of boards failing at that voltage that we decided to push the recommended voltage up and settled on 24v as it also reduced the amount of current needed. This improves the long-term reliability of the switching regulator on board as it needs to work fewer cycles in order to provide power to the rest of the board and the pi.
     
  20. stevej

    stevej New

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    I agree. I have a Shanti and would really like to figure out how to do this safely. This would save me some serious money in buying another LPS.
     

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