Try this, BBB + Pure firmware, according to reviews the sound is better than with Pi, and of course you need to collect a reclocker from the same site. Recommend!!!
https://puredsd.ru/
Thanks Traktorist3d will sort things out. I am sure i will get it functional.
Atm very busy with job swap so have to find some time fiddle with settings
FYI - most multimeters will "see" i2s as DC voltage. So if you want to see if you have i2s and don't have a scope, measuring with a multimeter on DC should give you a reading on the i2s lines. you might only see data line if you actually have something playing.
That has got me out of a pinch or two when I was trying to see if something was working or not.
fran
This is something I've been working at over the past little while. It's a low cost i2s switch from AliExpress, with a d-type flip flop on the output to reclock right before the DAC. My previous experiments were just seeing how it all worked (it did) but I haven't actually tested this arrangement just yet. The idea was to eliminate as much of the wiring as possible and allow 2 sources to be used with one DAC, in my case USB and an SD card player.
Unfortunately those nice potato flip flops are gone, but this TI chip is handy in that the inputs and outputs are lined up opposite each other on the chip. Both the switch and flip flop will run from either 3.3 to 5v which is handy.
Unfortunately those nice potato flip flops are gone, but this TI chip is handy in that the inputs and outputs are lined up opposite each other on the chip. Both the switch and flip flop will run from either 3.3 to 5v which is handy.
Attachments
No Problem!! Just spreading the fun around
You can experiment with different film caps like Diyiggy suggested, but keep the required package size as per the BOM. Susumu RR, RS and RG(for regulator section).
Jimk04,
Your correct in thinking the TPS7A39 regulator is the tricky piece on this board. That would be nice if JLCPCB would pre-populate that for a reasonable price. Maybe if enough of you in the EU wanted the boards, the service would be doable.
Enjoy!!
Ps: Sorry Iggy, I didn’t have enough time to create the giant Bordeaux bottle that Miro did, Cheers anyway
Pss: Get the pcb’s with ENIG finish, easier for SMD soldering.
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Hi, I thought about it, but I did not, as I have soldered such thingies successfully, even it was a pain. This is DIY ;-)
And for AD1865 I wouldn't need the regs.
If I don't manage, I always could reorder them soldered....
Cheers
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Vunce I/V stage after P. Rogic boards
I've ordered 20 boards, and in order to support soldering I've ordered a soldermask (thanks Vunce for the solderlayer). Therefor the ordered boards were hasl finish and really cheap. I think the soldermask will save a few regs life and nerves.
As this was the first time I have ordered a soldermask, I hope, everything will turn out as planned.
I shall keep 8 boards for my needs. So I will have 12 pcbs for some interested guys in the EU region. I could send boards plus the soldermask after having soldered mine to the first interested DIY colleague here. diyiggy already mentioned, he would like get to a pair. So Iggy, if you agree, I would send the hole package, 12 boards plus mask, to you and it will be your responsibility to forward the rest to the next interested guy. I just want to get back the postal expense from the first taker and of course the soldermask from the last one in the row. The boards are small, some 23 by 27 mm, and the soldermask will be 80 by 80 mm. Due to that expenses will be manageable.
Iggy if you agree, I start with you:
diyiggy: 2 boards
total: 2 of 12
I've ordered 20 boards, and in order to support soldering I've ordered a soldermask (thanks Vunce for the solderlayer). Therefor the ordered boards were hasl finish and really cheap. I think the soldermask will save a few regs life and nerves.
As this was the first time I have ordered a soldermask, I hope, everything will turn out as planned.
I shall keep 8 boards for my needs. So I will have 12 pcbs for some interested guys in the EU region. I could send boards plus the soldermask after having soldered mine to the first interested DIY colleague here. diyiggy already mentioned, he would like get to a pair. So Iggy, if you agree, I would send the hole package, 12 boards plus mask, to you and it will be your responsibility to forward the rest to the next interested guy. I just want to get back the postal expense from the first taker and of course the soldermask from the last one in the row. The boards are small, some 23 by 27 mm, and the soldermask will be 80 by 80 mm. Due to that expenses will be manageable.
Iggy if you agree, I start with you:
diyiggy: 2 boards
total: 2 of 12
It’s functional !
Without fifopi reclocker I2S off raspberry 4, and using those adviced LM opamps. Playing some radio broadcasts from the web.
I did not get any I2S signal from rpi in raspbian and volumio, with moode os yess got signal
This evening put reclocker on and try to get upnp for tidal playback
Without fifopi reclocker I2S off raspberry 4, and using those adviced LM opamps. Playing some radio broadcasts from the web.
I did not get any I2S signal from rpi in raspbian and volumio, with moode os yess got signal
This evening put reclocker on and try to get upnp for tidal playback