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Old 22nd July 2019, 03:07 PM   #11
Blitz is offline Blitz  Germany
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can you publish your uEnv.txt here ? What type of music do you play pcm, dsd, 2ch ?
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Old 22nd July 2019, 08:31 PM   #12
francolargo is offline francolargo  United States
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I agree that the output of speaker-test suggests all is well with the BBB but @Blitz's suggestion is a good one.

I see you installed a header on the underside of the Cronus. Is there any chance that the dark gray power input block, which overlaps the back of that header, is shorting any of those pins?

Have we checked directly for an I2S signal coming out of Cronus? If an oscilloscope is not available, perhaps a multimeter set to AC-voltage measuring between ground and Left-right clock (D1?) will show a deflection at the beginning of an 'play' or 'speaker-test' command. That would certainly help isolate the issue.

Finally, I suggest you use the Twisted Pear support site. Take good, detailed images of both sides of all the boards and post them there. Sharp eyes will look for things that are otherwise hard to simply imagine...

Good luck,

Frank
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Old 25th July 2019, 09:06 PM   #13
stefanhgm is offline stefanhgm  Europe
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Thanks for your replies!

Quote:
can you publish your uEnv.txt here ? What type of music do you play pcm, dsd, 2ch ?
I have no access to the BBB right now, since my Buffalo is at a friends place for trouble-shooting. Why would the uEnv.txt be important?

I play a sound signal for debugging via "speaker-test -Dhw:0,0 -c2" as francolrgo suggested earlier, so I assume pcm, 2ch.

Quote:
I see you installed a header on the underside of the Cronus. Is there any chance that the dark gray power input block, which overlaps the back of that header, is shorting any of those pins?
Okay, interesting point. I will test this as soon as possible.

Quote:
Have we checked directly for an I2S signal coming out of Cronus? If an oscilloscope is not available, perhaps a multimeter set to AC-voltage measuring between ground and Left-right clock (D1?) will show a deflection at the beginning of an 'play' or 'speaker-test' command. That would certainly help isolate the issue.
Certainly, that would be helpful to see whether a I2S signal comes out of the Cronus. Unfortunately, we had no oscilloscope to test it. I will try it with a multimeter as you suggested. We also thought about another source of an I2S signal to check whether the Buffalo works correctly. Do you have any suggestion for a source that generates an I2S signal for testing?

Quote:
Finally, I suggest you use the Twisted Pear support site. Take good, detailed images of both sides of all the boards and post them there. Sharp eyes will look for things that are otherwise hard to simply imagine...
Yeah, thats what I think. I asked Brian and Russ to answer in this thread, since all information are already here, but maybe I will try it again at the TP forum. Thanks for this advice!
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Old 7th August 2019, 10:27 AM   #14
stefanhgm is offline stefanhgm  Europe
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Join Date: Jul 2013
Quote:
I see you installed a header on the underside of the Cronus. Is there any chance that the dark gray power input block, which overlaps the back of that header, is shorting any of those pins?

I verified that there is no connection.


Quote:
Have we checked directly for an I2S signal coming out of Cronus? If an oscilloscope is not available, perhaps a multimeter set to AC-voltage measuring between ground and Left-right clock (D1?) will show a deflection at the beginning of an 'play' or 'speaker-test' command. That would certainly help isolate the issue.

I tried to measure a voltage but unfortunately I could not recognize a difference when starting speaker-test or playing a music file.


As you suggested I opened up a topic in the TP support forum. I also took some Highres pictures that I also attach here. maybe you can spot the problem.
Attached Images
File Type: jpg IMG-20190729-WA0004.jpg (462.3 KB, 18 views)
File Type: jpg IMG-20190729-WA0005.jpg (387.6 KB, 18 views)
File Type: jpg IMG-20190729-WA0006.jpg (382.6 KB, 18 views)
File Type: jpg IMG-20190729-WA0007.jpg (387.1 KB, 16 views)
File Type: jpg IMG-20190729-WA0008.jpg (333.8 KB, 18 views)
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