RaspyFi - Topic: Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/ Simple:Press Version 5.2.6 Gyp on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p579 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p579

gjm said

Grandma didn't know that... Embarassed
Still, the one I found had 256Mb and a single USB port. I want more. More. MORE! Laugh

Ah, if it only had one USB it'll have been an A. No Ethernet either.

]]> Fri, 05 Jul 2013 07:02:27 +0200 gjm on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p578 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p578

Gyp said
Probably teaching grandma to suck eggs, but the B originally came with 256Mb, up to mid October last year

Grandma didn't know that... Embarassed
Still, the one I found had 256Mb and a single USB port. I want more. More. MORE! Laugh

]]> Fri, 05 Jul 2013 05:42:35 +0200 Gyp on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p576 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p576

gjm said
I'm still to plunge into the Pi. Nearly did a few days ago when a (allegedly) Model B came up for sale at a reasonable price. Only it wasn't... 256Mb, not 512. And as I plan to use Ramplay I'll perhaps be better off with the larger memory capacity. And the extra USB port. At present I'm being very good - I'm out of work and really shouldn't be spending money on such things! Hopefully I'll have good news today, in which case I may contact Element14... Cool

Probably teaching grandma to suck eggs, but the B originally came with 256Mb, up to mid October last year

]]> Thu, 04 Jul 2013 23:07:41 +0200 gjm on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p575 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p575

admin said

I didn't know this... Mine works flawlessly without the 5v rail... But this cuold be a matter of interest... Have you tried ?

I'll check the details but as Derek says, there are problems with directly connecting to some DACs. The 5V is used to handshake, but then dropped during data transfer.

I'm quite inclined to bypass the Micro USB connector - I've had all sorts of problems with them on phones. Less of an issue on a Pi where it would be more fit and forget, but regular (dis)connecting seems to wear on the contacts resulting in charging issues (with phones).

Having 'invested' in a good quality USB cable which currently sits between my laptop and the S/PDIF converter I'm a little hesitant to start carving it! I'll find a cheap one to experiment on. Wink

I'm still to plunge into the Pi. Nearly did a few days ago when a (allegedly) Model B came up for sale at a reasonable price. Only it wasn't... 256Mb, not 512. And as I plan to use Ramplay I'll perhaps be better off with the larger memory capacity. And the extra USB port. At present I'm being very good - I'm out of work and really shouldn't be spending money on such things! Hopefully I'll have good news today, in which case I may contact Element14... Cool

]]> Thu, 04 Jul 2013 23:01:22 +0200 Derek on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p574 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p574 You're right about those 'smart USB' implementations on some DACs, Graham - but leave the ground cable intact, just abort the 5V wire.

Also, if you're into tinkering, try connecting 5V directly to TP1(+) and TP2(-) on the Raspi, bypassing the Micro-USB connector (and, unfortunately, the polyfuse) and let us know if you hear any difference in sound quality.

]]> Thu, 04 Jul 2013 22:26:26 +0200 admin on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p572 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p572 I didn't know this... Mine works flawlessly without the 5v rail... But this cuold be a matter of interest... Have you tried ?

]]> Thu, 04 Jul 2013 12:08:06 +0200 gjm on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p569 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p569

admin said

The second one you said... I recommend also cutting the 5 volts power rail of the usb cable that goes from the hub to the Pi... Doing so prevents the usb hub dc to pollute the pi's dc...

Just the 5V rail, leaving the ground connected? I'll guess this has already been tried - presumably the +5V isn't needed by the Pi for handshaking? I know some DACs can get upset if they don't 'see' the +5V, at least to start communications.

]]> Wed, 03 Jul 2013 07:15:48 +0200 admin on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p560 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p560 The second one you said... I recommend also cutting the 5 volts power rail of the usb cable that goes from the hub to the Pi... Doing so prevents the usb hub dc to pollute the pi's dc...

]]> Tue, 02 Jul 2013 11:25:13 +0200 gjm on Storage and connectivity http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p546 Everything else http://www.raspyfi.com/forum/everything-else/storage-and-connectivity/#p546 I have a couple of HDDs that I use to store lossless music ripped from CDs. How do others get on with connecting multiple drives to their Pi? A powered USB hub is an obvious solution - any recommendations, or is this one of those hifi foo things where anything half-decent will do? Wink

Ta,
Graham

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