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Thread: Linear PSU roundup?

  1. #181
    Join Date: Feb 2013

    Location: W Lothian

    Posts: 99,005
    I'm Grant.

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    It takes about a max 10 secs I'd say to be ok to shut down Moode. Not sure about the others. I found Volumio a tad touchy on corruptions in its early days but I would imagine its better now. Ive never corrupted a moode card. so yes once it stops flashing I guess.. I just wait 10 secs or so (min)and then switched the psu off. I do same with the battery supply now.
    Regards,
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  2. #182
    Join Date: May 2009

    Location: Farnham, Surrey, UK

    Posts: 129
    I'm Alan.

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    I found this link on DiyAudio, it shows how to shutdown an RPi cleanly, I have not tried it so no guarantees.

    https://matthew.mceachen.us/blog/giv...free-1397.html

    On my RPis I add a momentary switch which connects to a two-pin header labelled P6 or RUN, this allows you to Reset the RPI simply.
    Alan.

  3. #183
    Join Date: Nov 2010

    Location: Sheffield/Peak District. UK

    Posts: 574
    I'm Richard.

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    Thanks both. Alan, I couldn't get your link to work.

    BW

    Richard

  4. #184
    Join Date: May 2009

    Location: Farnham, Surrey, UK

    Posts: 129
    I'm Alan.

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    Yip, the link is broken on DiyAudio as well. I assume his pc is turned off!

    If it comes back up I will try to copy the details, but basically it involves adding a USB device, writing a very simple script to recognize when it is removed and shutting the RPi down. Apparently any old USB device that the Pi recognizes as valid will do!

    Hopefully more soon.
    Alan.

  5. #185
    Join Date: Jun 2016

    Location: Munich

    Posts: 3
    I'm Gunther.

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    Out of interest did someone check into a lead acid 12 volt battery like this?
    http://www.digikey.com/product-searc...c%20LC-RD1217P

    I personally used the supplied switching PS for my 2Qute DAC for maybe two weeks and switched to such battery then. It´s a night and day experience so far and not going back to the Chord PS. But no clue if a real good linear PS would sound even better or not. Any experience?

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