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Old 9th September 2018, 12:23 AM   #741
ichiban is offline ichiban  United States
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Introducing the Buffalo III-SE-Pro 9028/9038
You mean the four 2x2 connectors I circled with red? Where do I have to connect the external battery then?
=======================================
Yes that 2x2 connector must connect to the BBB for the battery
to protect the BBB on shut down.


Battery goes into the connector next to where you have the 5v

external ps currently wired in. Do be mindful of + - connection.
To be honest tho, I had the battery connected where you have yours

now. I think the two are linked, as I recall. I later opted to use the

connectors which made it easy to remove the battery if needed.





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Last edited by ichiban; 9th September 2018 at 12:51 AM. Reason: adds
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Old 9th September 2018, 06:57 AM   #742
stefanhgm is offline stefanhgm
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Quote:
Originally Posted by bk856er View Post
Confirmed dead boards, or just funky LED behavior?

The BBB does not start up/blink or anything with the mini-USB power adapter I used to power it so far. So, I considered it destroyed.

The Hermes LEDs do not work anymore. If a working BBB would be necessary to light up this four LEDs this could be due to the broken BBB. If the four LEDs should work without the BBB then the Hermes could also be damaged .

Q1. So, should the Hermes LEDs also work without a BBB connected?

Q2. Any other suggestions I can ensure the Hermes or BBB or even the other boards are not dead?


Quote:
Originally Posted by ichiban View Post
Yes that 2x2 connector must connect to the BBB for the battery
to protect the BBB on shut down.


Battery goes into the connector next to where you have the 5v

external ps currently wired in. Do be mindful of + - connection.
To be honest tho, I had the battery connected where you have yours

now. I think the two are linked, as I recall. I later opted to use the connectors which made it easy to remove the battery if needed.
Thanks for this info. Yes I have seen people connect the battery where I did. I guess my next run with a new BBB would be completely without battery first.

Q3. For me it seems the (maybe wrongly connected) battery was not the problem for destroying the BBB(/Hermes). Any other suggestions of what I should check that could have caused my problems?

Thanks for your help guys!
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Old 9th September 2018, 07:45 AM   #743
Luca72c is offline Luca72c
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Quote:
Originally Posted by stefanhgm View Post
Q3. For me it seems the (maybe wrongly connected) battery was not the problem for destroying the BBB(/Hermes). Any other suggestions of what I should check that could have caused my problems?
Thanks for your help guys!

Maybe, if the problem was at switch on and not at shutdown. But, if you didn't solder the square 4 pin connectors to hermes and BBB, where did battery current go?
May it have caused some other power problems?
Russ is needed to answer that...


About Q1, i cannot answer because i never tested hermes without BBB. Russ is needed for this answer, too...


And most of all, a clear, comprehensive, concise, step-by-step user guide is strongly needed for these products too, considering it was longly expected...

Last edited by Luca72c; 9th September 2018 at 07:48 AM.
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Old 13th September 2018, 01:34 PM   #744
hellokitty123 is offline hellokitty123  United States
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I have a question about the design of the DAC. I've noticed that DGND and AGND are connected to the same plane at the same central location.
Isn't this bad practice?
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Old 13th September 2018, 01:42 PM   #745
Russ White is offline Russ White  United States
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Absolutely not - a solid ground plane is ideal for this type of layout. I have been designing/building/measuring/optimizing this stuff for a long time BTW - this is not new to me.
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Old 13th September 2018, 10:47 PM   #746
itsikhefez is offline itsikhefez  United States
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Introducing the Buffalo III-SE-Pro 9028/9038
I am using an amb sigma11 (at 4.88V) to power the Buffalo.
Is it OK to use it to power the Chronus as well?
I am using the 9V transformer from TPA and the s11 does not have any built-in current limits.
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Old 14th September 2018, 01:37 PM   #747
BrianDonegan is offline BrianDonegan  United States
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Introducing the Buffalo III-SE-Pro 9028/9038
Quote:
Originally Posted by itsikhefez View Post
I am using an amb sigma11 (at 4.88V) to power the Buffalo.
Is it OK to use it to power the Chronus as well?
I am using the 9V transformer from TPA and the s11 does not have any built-in current limits.
If it can supply the current, sure. You could even tap power for the Cronus from the Buffalo's I2C header if that offers better wire routing.
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Old 15th September 2018, 08:31 PM   #748
stefanhgm is offline stefanhgm
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Russ, Brian could someone of you please answer my questions?
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Old 21st September 2018, 03:16 PM   #749
Russ White is offline Russ White  United States
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Quote:
Originally Posted by stefanhgm View Post
Russ, Brian could someone of you please answer my questions?

It would be best to post this in the Hermes-BBB thread.

This thread is not on that topic.

That said - you would definitely need to have a BBB connected to see much happen unless you send signals yourself.

The design is open source - you can see the schematic and test those points yourself if you like.

Cheers!
Russ
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Old 21st September 2018, 03:28 PM   #750
Microfast is offline Microfast  Italy
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Some news on the multichannel Es9038pro board or it is a cancelled project?
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