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Hermes-BBB/Botic cape for BeagleBone Black

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#461
gwikse said:
1. How far along are we regarding the I2C volume (and control of other registers in the DAC chip)?
2. Will this distro be compatible with f.inst roon-bridge and its hardware volume setting?
3. Are you thinking of developing something that could replace the oled-arduino (hifiduino) solution with regards to switching other inputs as well (sp-dif`s etc) but run the controller code from the BBB?
Click to expand...
The botic-sabre32 driver does not support dual-mono, custom FIR filters and some advanced channel settings as phase and polarity.

But controlling of all other settings of the ES9018S is supported via the ALSA mixer interface.
 
#463
Thanks for the replies 🙂

That sounds great 🙂

The roon software is just a add-on service that run on top of existing distro`s (. I`ve been running it on archphile, volumio and moode. Since your solution adjust volume via i2c it should tap into that command when adjusting volume from roon. But it does say that it require alsa drivers. I guess I have to try it to find out.

But keep up the good work 🙂
 
#465
Hi

Can you confirm me it's possible to install Squeezelite on this distribution ? If yes how ?

* I thinking to have this configuration :
[BeagleBone Black - Squeezelite] >----- I2S Link -----> [Hermes BBB] > [Cronus Relocking - I2S Output] >----- I2S Link -----> [I2S HDMI Amanero Output] >----- HDMI Cable ----> [DAC - I2S HDMI Amanero Input]

Is it works for you ?
Thanks
 
#466
Yes, it is possible to install Slimserver on the BBB, but the BBB does not have much RAM, so it might not work well with large database. The MPD is better alternative for that.

If you have a another computer that can run Slimserver, then you can use BBB just to run squeezelite embedded player. This works well.
 
#467
miero said:
Yes, it is possible to install Slimserver on the BBB, but the BBB does not have much RAM, so it might not work well with large database. The MPD is better alternative for that.

If you have a another computer that can run Slimserver, then you can use BBB just to run squeezelite embedded player. This works well.
Click to expand...

Thanks miero : I just want to install squeezelite. I already installed Slimserver on my Raspberry Pi 2 (with piCorePlayer).

I think I will buy in few weeks my kit : BBB + Hermes + Cromus...I hope to have a great sound !
 
#468
Should I earth the BBB?

My multimeter shows continuity between the BBB's -ve DC power connection and the sleeves of the 4 PCB mounting holes. Clearly, then, if I was to use metal standoffs to mount my BBB inside my metal chassis, the -ve DC would be connected to chassis earth. And my chassis earth will certainly be protective earth, as per Australian standards.

But I will be using nylon or rubber standoffs, attached to a wooden base inside the chassis.
And I was not intending to earth the DC -ve output of my linear supply.

So my question is should I go to the trouble of making an electrical connection from BBB -ve DC input to the chassis? I understand a copper strap is correct for such applications.

Or should I just leave the DC supply floating?
 
#470
Does anybody have the exact measurements of the modules involved in a BeagleBorad-Black + BII or BIII + Cronus + Hermes-BBB build? It would suffice to know the outline dimensions of a ready build. Background is, I am designing a case, respectively trying to find one, that can also fit an amp-module.

I did not find any documents on the TwistedPear website regarding this.
Thanks a lot!
 
#471
Can help you with Hermes and Cronus, perhaps others can provide the rest?
 

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#473
amix said:
Background is, I am designing a case, respectively trying to find one, that can also fit an amp-module.
Click to expand...
I found layout to be challenging if one wants to directly port any of the BBB connectors outside the chassis. Teleporters solved the problem for me (photo here). Others have shown it is best to keep wifi dongles outside the BBB chassis. If the amp modules generate heat, remember that *good heat management* is desirable around the tridents, around any other shunt regulated supplies, and (in my experience, at least) for best performance of the Legato I/V boards.

Cheers,

Frank
 
#474
chryses said:
What do each of the four LEDs on the Hermes represent? Only the first LED is lighting up for me. NB: I've got a B3SE running controlled by an Arduino running modified Hifiduino code.
Click to expand...

Anybody have any advice on how to debug? Reading through this thread again, it seems like the ENABLE light should be turning on if things are configured correctly - but the only thing lighting up for me is the LED labeled "3". I've got miero's botic4 image loaded and can ssh into the BBB. Happy to post some photos, if that would help.
 
#475
chryses said:
Anybody have any advice on how to debug? Reading through this thread again, it seems like the ENABLE light should be turning on if things are configured correctly - but the only thing lighting up for me is the LED labeled "3". I've got miero's botic4 image loaded and can ssh into the BBB. Happy to post some photos, if that would help.
Click to expand...
Hi chryses, it appears that your problem may be related to soldering. You might want to check again your soldering work with the LED pins and those header pins to P9 of BBB soldered to the Hermes board. Careful retouching of soldered joints may correct hidden incomplete soldering.

Regards,
 
#476
twluke said:
Hi chryses, it appears that your problem may be related to soldering. You might want to check again your soldering work with the LED pins and those header pins to P9 of BBB soldered to the Hermes board. Careful retouching of soldered joints may correct hidden incomplete soldering.

Regards,
Click to expand...

Thanks twluke. I went back and retouched everything, scrubbed it all down with alcohol, but I'm still having the same issue. Some photos of the board below - anything look wrong to anyone? Any other troubleshooting ideas?
 

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#478
twluke said:
Do you get the same result when booting from usual 5V power supply via the terminal block of Hermes?
Click to expand...

Sorry, I'm not sure I understand. In the pictures, I'm powering the Hermes via the terminal block (red and black wires). If I disconnect those and power the BBB up using its barrel connector (attached to a wall wart), I have the same issue. But I don't think that was what you were asking ...
 
#479
chryses said:
Sorry, I'm not sure I understand. In the pictures, I'm powering the Hermes via the terminal block (red and black wires). If I disconnect those and power the BBB up using its barrel connector (attached to a wall wart), I have the same issue. But I don't think that was what you were asking ...
Click to expand...
Oh, I mistook the cables connected to the 5V supply as a part of extension from the battery power. Your connection is exactly set to what I asked. I'm sorry for making this confusion. So, I'm afraid to say that I can not offer further idea to help you for now.

Regards,
 
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