Simple DSD SRC for BeagleBone

[wealas]

It was 2/11 when I checked yesterday so that date might keep moving...

 

[Zoran]

Yes, it works successfully with 45/49 clocks.

Thanks for that information
For some time I was thinking to replace 22/24 with 45/49 oscilators.
Maily for the recklocking max 384KHs SR bus.
.
I have few question please?
-Did You try it on original Amenero PCB?
-And If the fimware setting should be changed?
.
Thanks

 

[ppy]

I have few question please?
-Did You try it on original Amenero PCB?
-And If the fimware setting should be changed?

I have not changed clocks.
Tested only in slave mode with external MCLK 45/49.

 

[RobLK]

I found an antminer control board version v2.3. It looks much like the one posted earlier and you can get them very cheap. I noticed it doesn't have a power jack so how do you get the 5vdc to it? The v2.3 doesn't even have holes for the jack.

 

[wealas]

The black header connectors. You'll have to figure out which pins.

 

[RobLK]

Ok, the regular beaglebone black schematic shows +5v on pins 5 and 6 and digital ground on pins 1 and 2. I would think it would be the same on the antminer. The pins however will be hidden inside the dsdit connector.
There is a 2gb ddr3 chip on this version antminer board.

 

[ppy]

J1 can supply power to the AntMiner or the original Beaglebone.
On AntMiner RAM - 256 megabytes. This is quite enough for our tasks.

 

[RobLK]

J1 can supply power to the AntMiner or the original Beaglebone.
On AntMiner RAM - 256 megabytes. This is quite enough for our tasks.

Thank you that is very good to know. Well, I don't know much about this board yet is there more than one Ram chip on it? The chip that I referred to is just below the arm processor. It has a model number nt5cc128m16ip-di.

 

[RobLK]

I think I see 2gb shown on the datasheet must be in bits. Well it shows how much I know about digital.
What is the best way to install Pure. Should I burn the pure image onto a micro sd card? I read somewhere that to boot from an sd card with BBB you have to press the boot button, but I see that the boot button is missing on the antminer board.

 

[RobLK]

There is no usb port on the antminer but the component solder pads are on the board. It wouldn't cost much at all for the parts. I bet usb would work fine if you install the missing parts.

 

[ppy]

I bet usb would work fine if you install the missing parts.

Yes, USB works great on AntMiner.

 

[ppy]

Hmm... I didn't expect this project to be interesting to so many people.
I found a very old version of DSC 2.7 on the shelf, washed it off the dust and for the third week now I have been listening to only DSD'it + DSC 2.7.
I like not being tied to HQPlayer. Now I have access to sound from any source.

 

[gionag]

...
I like not being tied to HQPlayer. Now I have access to sound from any source.

It's nice for that very reason
beside the fact that i am not on that list... for what matters, i will surely make one for myself in the near future.

Nice stuff !

 

[gionag]

the plan for future earnings :

step 1. buy a stock of chinese parts
step 2. burn the factory down
step 3. profit

 

[ppy]

I could not find information in any of the news that the fire affected the production of AK4137 chips.
But nevertheless, their cost increased 10 times.

 

[nautibuoy]

I could not find information in any of the news that the fire affected the production of AK4137 chips.
But nevertheless, their cost increased 10 times.

AKM Factory fire - will have a terrible impact on the audio indusrty

 

[ppy]

AKM Factory fire - will have a terrible impact on the audio indusrty

The AK4137 chips are not listed there. This factory did not produce the entire AKM range.

 

[Ipoci]

The "Pure" firmware is a collection of network endpoints for various audio protocols..

Hi Pavel.


I did a couple of short tests with Pure firmware and a Khadas Tone Board.
Setup1) NAS Synology with loaded MinimServer/BubbleUpnp Server. BBB board with Khadas on USB and Lumin APP on iPhone. It works flawless (I just noticed some glitch/bump when switch from PCM/DSD tracks)


Setup2) I then configured Pure as HQP NAA. Khadas still on BB USB port, then main source is my HQP Desktop 3.25.6. It recognize BBB/Pure as a NAA but I'm unable to play any track. The board perfectly sounds when directly connected to HQP Desktop pc. Is there something I should look at?

 

[ppy]

PopUp sounds when switching DSD-PCM is a very sore subject. And it strongly depends on many parameters. Including how the format is changed on your UPNP server.

Pure firmware has automatic detection of USB/I2S output. But the default settings are I2S. You should connect the USB DAC to the BeagleBone and reload the firmware or double-switch the HQP->Roon->HQP format via the firmware web interface.
Then the output will be via USB. In HQP, you need to select a USB device:

 

[Ipoci]

Thanks Pavel as usual ... I did everything from scratch and now HQP perfectly see BBB as a NAA and sounds too. To be honest I now suspect that pops/bumps and malfunctions are caused by my Khadas dac that's has a very old firmware. No worries from my side, Khadas is just a "temporary" solution while waiting for DSD Src and DSC Stick!

I also used Pure on BBB as AirPlay client from iPhone and OSX and it works perfectly, cool!