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Old 6th May 2021, 01:29 PM   #1971
JPS64 is offline JPS64  Germany
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Thank you!


JP
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Old 6th May 2021, 01:42 PM   #1972
abraxalito is offline abraxalito  United Kingdom
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Join Date: Sep 2007
Location: Hangzhou - Marco Polo's 'most beautiful city'. 700yrs is a long time though...
Apologies - having scrolled back along the thread I see pics of a different kind being used, with only 3 pins.

Looks like this : R13????10K:20K???permalloy?????????1.4???-???

I don't have any of this type so can't oblige with mechanicals.
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Old 6th May 2021, 02:58 PM   #1973
JPS64 is offline JPS64  Germany
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Thank you for the link, but no footprint dimensions!


JP
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Old 6th May 2021, 05:56 PM   #1974
nautibuoy is online now nautibuoy  United Kingdom
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Quote:
Originally Posted by JPS64 View Post
Could someone supply the drawing with dimensions for this 10k:10k chinese transformer?


JP
You have the info now but if necessary you could download the gerber files and then use a gerber viewer to get the X,Y coordinates of the pads and any drill hole sizes.
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Old 6th May 2021, 06:31 PM   #1975
JPS64 is offline JPS64  Germany
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That is exactly what I‘ve done, thank you.

JP
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Old 30th May 2021, 12:25 PM   #1976
rzaglinskij is offline rzaglinskij
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Hi, guys
Could somebody help me with running PPY reclock with DSC 2.6?
here is what I have
- I have installed HQPlayer, configured. tested with Amanero - working
- connected reclocker to DSC DAC 2.6. tested signals - looks like they are ok.
- no sound.
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Old 30th June 2021, 10:10 AM   #1977
yunyun is offline yunyun
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If higher quality resistors and power supplies are used in DSC1, will DSC1 have a chance to make better sound? I think it can. Welcome to visit my DSD DAC.
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Old 30th June 2021, 03:03 PM   #1978
barrows is offline barrows
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Default seems...

It seems kind of silly to me to use leaded resistors for this design. Short paths, and less distortions in the resistors would be a good idea, and that can be better achieved with quality SMD types. Leaded resistors just add two additional junctions, and their associated noise/distortions.
If one really wanted to try some very good resistors, why not build a DSC style DAC with SMD foil resistors-even better if one is a manufacturer, get Texas Components to make some SMD metal foil resistor networks resulting in even fewer solder junctions to the board. While the resistor network is still "analog" in a sense in this design, it does have to operate at high speed, and little things like solder joints and material junctions could make actual differences.
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Old 18th July 2021, 01:58 PM   #1979
pcbd123 is offline pcbd123
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Quote:
Originally Posted by ppy View Post
In the latest update for the Pure firmware I added the ability to connect old multibit DACs.
DATA0 - 30(P9)
DATA1 - 41(P9)
I test I2S RJ with two chip DAC PCM58:
BBB Data0-30 (P9) to chip PCM 58_1 (DATA - PIN 19)
BBB Data0-41 (P9) to chip PCM 58_2 (DATA - PIN 19)
BBB BCK -31 (P9) to PCM 58 (CLK - PIN 16)
BBB LRCK - 29 (P9) to PCM58 (LE- PIN 17)
Result only white noise, not have music.
please help me PPY. Thanks a lot!
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Old 18th July 2021, 05:19 PM   #1980
ppy is offline ppy  Russian Federation
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I am not familiar with the PCM58 chip.
But according to the datasheet it uses Left Justified mode (MSB).
Therefore, you need add the snd_soc_botic.dai_format=16387 parameter. Also, you must reduce the bit width to 16 or 24 bits snd_soc_botic.blr_ratio=32 or 48
This is the file /boot/uEnv.txt.
More detailed instructions can be found here: http://bbb.ieero.com/
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