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In Reply to: RE: PiCorePlayer How To Video posted by Dynobot on April 01, 2017 at 18:26:54
I have a HiFiBerry digi+ board to go with my RPi 3. From your video, it looks like you are not using an adapter for the Jameco linear power supply.
Is this correct, or will I need a USB mini adapter? Or where are you plugging in the round power cord connector?
Follow Ups:
I power my via GPIO, hence the connection on the side.My parts list includes an adapter because without modification you will need to power the RPi via the microUSB
Note the caption under the picture
"RPI with HifiBerry Digi+ Pro being powered via GPIO through the Digi board."
Edits: 04/01/17
OK, but will powering through the USB mini outlet negate the positive effects of the linear power supply?
Somewhat but Linear is still better than the standard switching.Powering the RPi via the GPIO allows you to bypass some stuff...
Edits: 04/02/17
"...to bypass the switching regulator..."
There is no such thing - not for 5V. There's nothing to bypass except the
board protection and the crappy uUSB port.
Enjoy.
Of course you are right.
Power comes in from the LEFT side of the image, from a "MICRO USB TYPE B" jack, goes through "miniSMD" F3 (a fuse) and then has a D17 (Transient Voltage Protection Diode) across it as well as some capacitors (C2, C3 and C6).They can bypass the board protection and crappy uUSB port then.
Either way I think it sounds better to do so....at least to my ears.
Edits: 04/02/17 04/02/17
Should be easy for me to find??Also was hoping for a HiFiBerry board schematic as well. Didn't find one on their web site and was hoping to be able to get a re-clocked I2S from somewhere on the board?
Edits: 04/02/17
Re-clocked I2S?So you want the RPi's clock to make the I2S signal then a Re-clocked I2S board to reclock the signal then a Dac to use its own internal clock to Re-Re-Clock the I2S signal.
Okay.
As far as the schematic, I don't know...SoundChekk seems to know a lot about this board, he might be able to explain things if you have questions.
Edits: 04/02/17
What does it do?
especially if you're as confused as you say you are.
Try a vanilla power supply into the micro usb and then load PiCorePlayer and see if you can get it working..... Then you can move on to the other stuff, if you want.
Cut-Throat
Keep it as simple as possible.
Nothing more complicated than plugging something in and unplugging
I have no intention of firing up the soldering iron or the 'scope just yet, if ever.
Unless and until I get a decent work area in the back of the garage to set up all of my tools and test equipment, I'm a kitchen table guy anyway. The wife gets antsy if she sees a soldering station on the kitchen table anyway (unless I'm fixing something of hers, of course).
Would be nice to see a schematic of the HiFiBerry board though. Did I miss something on their web site?
And yes, I do intend to power the RaspberryPi through the conventional uUSB port, even going to start with the cheap wall wart before going to a battery pack.
First big task is assembling the cheap plastic case.
That could be the first stumbling block as it came in about 100 small pieces. =:-0
And it's only $15.... I have 4 of them.
Cut-Throat
Oh ye of little faith...
In fairness, it took far longer (more than a couple minutes) to peel all of those pieces of protective plastic film off the parts than it did to assemble it.
Any special formatting, etc. need to be done to the microSD card (new SanDisk Ultra 16G because that's what I already had) before flashing with etcher?
Just like Grannies Couch.
Cut-Throat
OK, at 9 months they ain't 'kittens' anymore but we do have ALL of our cloth furniture covered in plastic till the stop scratching on things.
Picture above NOT our couch, but that's the plastic covers we bought!
Remove the CLAWS, problem solved and plastic off.
But we do trim them weekly, but they never a bite or a scratch us, and after a while when they are used to using their scratching boards, the covers will come off and no more problems.
At least that's how it's worked with other cats we've had.
.
nt
Cut-Throat
Seems like this project will be much too much for you...
Somehow things present themselves to you at a much higher level of difficulty than the rest of us...for example a 100 piece RPi case. My plastic case only had 4 pieces and each piece could only fit in one space.
but it would appear I'm not alone. ;-)
Link below:
I might be in trouble..!!
Wait a minute are you being sarcastic now? Or was it before?
Keeps time I guess.
I'm guessing that if the RPi didn't have a clock to generate the I2S signal it would be impossible for it to have a I2S out via GPIO -and- it would be impossible for anything to lock onto a I2S signal coming from the RPi.
Thats my EWAG on the subject.
Audiophiles tend to over-think and over-do everything so a reclocker + a Regen + a few more clocks, gadgets and do-dads should make it sound better.
Of course they can bypass the board protection.
Who needs protection ? Just cowards!
Enjoy.
I'm guessing you use the uUSB port to power your RPi so that you can feel protected?
Nope. No uUSB.
.
The Raspberry Pi costs less than some 'audiophile' fuses.
I agree, besides the Linear power supply has its own protection.
Whats the worse that can happen?
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