Networking happens to be my field of expertise. The point I was making was with regards to "another layer of complexity and potential issues”. But off-course you are absolutely right, networking can yield excellent results if done right. No question about that.
Great Miero!
Which kernel version are you using now?
Have you tried Realtime kernel?
I have MUCH better audio performance on RT kernel vs standard kernel on PC with same system settings. IMHO the same positive effect should be on SoC (BBB, Cubietruck, Rpi, Wandboard, UDOO...)
Cheers
Ah, I'll try RT kernel, thanks for reminding 🙂
Currently this one:
# uname -a
Linux alarm 3.13.6-3-ARCH #4 SMP Fri Mar 28 01:27:56 CET 2014 armv7l GNU/Linux
Currently this one:
# uname -a
Linux alarm 3.13.6-3-ARCH #4 SMP Fri Mar 28 01:27:56 CET 2014 armv7l GNU/Linux
Hi miero, noting the above just wondering if you are basing you development around Archlinux now? Are you expecting to settle on one distro and kernel version as an end point or are you intending leaving that entirely up to the user? Or maybe you haven't considered this!
I had started with Archlinux 3.12 but had some difficulties so went for the standard BBB eMMC Debian image. Seems to me Archlinux is kept more up to date than Debian in terms of Linux kernel but has a smaller user community than Debian.
I think its pointless my switching to Archlinux at this time till things have settled down especially if you are planning on trying an RT kernel, just keen to keep up with the play!
Yes I know, but I'm interested in the BBB not the Cubox or the UDOO, maybe the Cubietruck though. I have read the whole thread.
I came very close to ordering a Cubietruck (luckily out of stock at the time) but having dug a bit deeper decided the BBB with the promised cape (Cape of Good Hope!) had the best chance of high end SQ given Cubietruck has a PLL derived clock.
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Thank you, I too came very close to buying the Cubietruck, and like you are waiting for the Cape of Good Hope 🙂
I'd still like to be able to attached a SSD without using the USB if possible (I know Russ is not interested in such things) but I don have the knowledge to work out how to go about it.
I’ve placed a pre-order for the BBB. Now my quest is for a suitable power supply.
Palmito suggested to me that, include the cape and possible other features in use, power consumption could well be above 1A. What HQ/low noise power supply would you recommend?
What’s the expected power consumption with the cape (being developed by Russ) and a SSD connected via USB + possibly Ethernet for remote control/management?
Palmito suggested to me that, include the cape and possible other features in use, power consumption could well be above 1A. What HQ/low noise power supply would you recommend?
What’s the expected power consumption with the cape (being developed by Russ) and a SSD connected via USB + possibly Ethernet for remote control/management?
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The most power hungry devices on the cape will be the clocks - and only one will run at a time they should consume < 25ma. Along with the other active parts total consumption should be well below 100ma. Of course the design is subject to change still. 🙂 As it stands now that is accurate. 🙂
Thanks Russ, would you dare making a ball park power consumption estimate for the whole BBB including, your cape, SSD and Ethernet, like I mentioned earlier? Maybe you have some way of quickly testing this.
As I suspect the whole thing will need to be powered through the one 5Vdc input on the BBB board, I'm still not sure which low noise power supply would be most suitable.
I would suggest using a powered USB hub for the SSD. Those things have very spiky current draw.
Very good idea to off-load the BBB board power feed by a seperate USB powersupply.
Thanks,
Start with a 5V 1 amp linear supply. I use an old zip-drive supply and works well with network, uSD card and USB DAC...
very interesting, may you please explain or give me a reference, I must have missed something somewhere...
Are there other amongst the small boards that share the same issue (I mean Udoo, Cubox-i, Wandboard, ...
When is the crossing of the Cape of Good Hope planned Russ (approximately ? price tag ?).
Is it compatible with both Volumio and RuneAudio or other system ?
And a last question I am using a Najda digital XO (see thread on http://www.diyaudio.com/forums/digital-line-level/215379-dsp-xover-project-part-2-a-68.html
Would the cape be able to provide a clock to Najda. It is resampling inputs to 48 kHz or 96 or 192 kHz
BR
Jean-Louis
Would having a completely separate supply for the cape be beneficial? Or is it so interlinked with the BBB that trying to isolate it is just not worthwhile?
I was kinda assuming there would be an option for either separate power or from the BBB on the cape. I have built a box with the BBB and one of these Curryman DAC (ES9023) | MiniDSP connected via I2S. I have included a separate 5V supply for the cape when it arrives. Thats anticipation for you!
It sounds good already with 48/96k input and quite acceptable with 44.1k much to my surprise. ALSA doing a good job of up-sampling I guess.
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Not a bad idea to try and isolate power to the clocks on the cape from the switching noise the BBB will generate. Probably just a case of redirecting the power pins to the cape.
I'm making an adm7151 board for use with the BBB+cape. I'm going to use a smps to power it. This reg has so good specs that makes me think that it will filter out all the disadvantages of the smps
Good read gents, thanks to all for their contributions so far, still waiting for a bbb to arrive.....
Chuz,
Drew.
Chuz,
Drew.
Gday all,
Anyone know the pinout for the DSD for the RPi and the BBB?
Chuz,
Drew.