Asynchronous I2S FIFO project, an ultimate weapon to fight the jitter

Disabled Account
Joined 2002
Hello,
It won't be that long
It is called planned obsolescence
Would be a nice modus operandi to always skip one update to reduce electronic waste or to create a system where you could return your obsolete circuit board to sender ( and get a substantial discount) in order to be redistributed amongst the less fortunate.
Greetings Eduard
 
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Please play a DSD file with DoP enables to see if the DoP LED is lit.
I have played a DSD file with DoP but still no led lights up. Thank you Ian for your reply
z4981280994855_028b63307573c14daf64e8aba7e0a9ca.jpg
 
Hello,
It won't be that long
It is called planned obsolescence
Would be a nice modus operandi to always skip one update to reduce electronic waste or to create a system where you could return your obsolete circuit board to sender ( and get a substantial discount) in order to be redistributed amongst the less fortunate.
Greetings Eduard
I run the original FIFO. Passed on Q3 & 7. Both promise better sound, but the OG sound still thrills me. Upgrades included ReclockPi and SinePi and a variety of clock and PS improvements that all provided new thrills. Its been powered 7/24 for years. The output tubes were made in the 70's. I can't think of many other consumer electronics that offer that kind of longevity or flexibility.
I also run the same car for last 8 yrs because I like driving it better than the new ones I see. They promise a faster infotainment system.
 
I have played a DSD file with DoP but still no led lights up. Thank you Ian for your reply View attachment 1250964
Please start from a simple software such as Volumio to exclude the software issue. To play the DoP, You have to make sure all volume control are disable.
Only install other software after you confirm hardware is working properlly.

Merry Christmas and Happy New Year!
Ian
 
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Hi Ian,

Sorry if this has been asked before cause i been away from diyaudio for a few yrs and now I'm back this hobby again. I have build quite a few dacs in the past all using USB audio as the interface. Its already with isolation + reclock but just using USB as input. Its too cumbersome for me to modify them to use your wonderful transport (HDMI). I am thinking if i were to use just the Rpi4 + PurePi and use the Rpi4 USB output (NAA or Upnp) will I still get the benefit of a clean digital audio ? I know the ideal case would be to use the Fifo hat + HDMI but incorporating the Fifo _ HDMI is just too difficult for my current dacs. I might build a new Dacs in the future but i just have too many Dacs on hand.
 
Hi everyone,
I am a newbie at DAC DIY building. Few months ago, watching @Gabster 2000 YT videos, I assembled a ProtoDAC HAT and plugged it on a RPI4. Very good improvement from my Wim Pro which was one from a USB DAC (Encore mDCD with AudioQuest jitterBug) with Audirvana on a MacBookPro.
I am about to order this list from IanCanada (for this first-second project a want to keep the ProtoDac).
Did I make some mistakes (I think the StationPi is not a good stuff with the purePi) ? Do you have any advices ?
Thank you for your answers.
Max
config.jpg
 
@MaxB_70

I too have a ProtoDAC and I'm ordering my first IanCanada parts. My list is similar to yours, except no StationPi Pro for me, and I add an UcPure power supply to have separate 5V power for the ProtoDAC (cut two 5V pins on a IanCanada GPIO spacer that I place the ProtoDAC on).

I also have a ReceiverPi DDC for digital audio input.

And I have the GPIO extension kit to use with the MonitorPi Pro.

If you want the StationPi layout I think you can use PurePi on the side to power the StationPi stack. But maybe StationPi SMT would be preferable in that situation.
 
@iancanada - I have UCPure MKIII question... to use the SYNC UC charging feature it sounds like this will work with Fifopi Q7 without a need for MonitorPi pro (i.e. can an older MonitorPi be used and still have the SYNC charge capability)? If you have a Fifopi Q3, can the MonitorPi pro be used to enable SYNC charing? I'm trying to understand what the SYNC charging controller in the MonitorPi pro adds.

Thank you!
 
FifoPiQ7 takes external I2S. The best way is to use an input adapter to connect to an external I2S source.
My Group Buy order arrived and put the Q7 to work. Unfortunately the MonitorPI shows NOSIG. Is there any extra config required when used just for re clocking purposes without a PI?

My setup is USB input -> PCM63 MIRO DAC input connected via LRK,BLK and DATA, working fine.

Rerouted the three connections + ground to J1 as the manual specified 40-Data, 35-LRK, 12-BLK. No signal. Tried a different I2S source via LAN, same issue but works fine connected directly to the DAC.
Replaced the clocks with SCPures, no difference. Tried some options in the MonitorPI and nothing helped.
I2S, Power and Empty LEDs lit on the board.

Any ideas? Couldn't find any info on the WRONG info displayed on the Monitor PI:
Video of monitorPI:
 
Last edited:
Newbie question:

I installed below external on/off button and connected it to J5 of a PurePi II:

1703712822671.png


I connected the black J5 wire to NO and the red J5 wire to C (so not the additional connections as shown in the picture). According to the multimeter, J5 outputs 5 VDC, where black is positive and red negative.

Pushing the button just shorts NO and C and this turns on the PurePi output as it should. However, this way I am not yet using the button light. Any idea what else to connect in order to also use the button light?
 
Ciao, sono nuovo nel gruppo.
Recentemente ho sperimentato il piacere di un orologio esterno al rubidio da 10 metri.
Ora sto cercando uno streamer Rpi con ingresso 10M e solo uscita I2S.
Che configurazione potete consigliare?
Ho visto la scheda Sinepi ma non capisco se accetta e come rielabora un segnale di riferimento a 10mhz.
Ringrazio e auguro a tutti buone feste.
 
:cop:
This is an English speaking forum. If you wish to post in another language you need to post a translation.
Thank you.

Questo è un forum di lingua inglese. Se desideri pubblicare in un'altra lingua devi pubblicare una traduzione.
Grazie.

Google Translate:
Hi, I'm new to the group.
I recently experienced the pleasure of a 10 meter external rubidium clock.
Now I'm looking for an Rpi streamer with 10M input and I2S output only.
What configuration can you recommend?
I have seen the Sinepi card but I don't understand if it accepts and how it reprocesses a 10mhz reference signal.
I thank you and wish everyone happy holidays.
 
Newbie question:

I installed below external on/off button and connected it to J5 of a PurePi II:

View attachment 1251902

I connected the black J5 wire to NO and the red J5 wire to C (so not the additional connections as shown in the picture). According to the multimeter, J5 outputs 5 VDC, where black is positive and red negative.

Pushing the button just shorts NO and C and this turns on the PurePi output as it should. However, this way I am not yet using the button light. Any idea what else to connect in order to also use the button light?
1703717907101.png

I have similar power button, maybe you can see in this diagram what you have to do
 
Disabled Account
Joined 2002
Hello,
Just come across a post here about a device when my country had some serious engineering going on at Philips.
This is a circuit board from a millivolt meter made about sixty years ago. The board is suspended by 4 tiny springs in its corners and it is mentioned that the cables connected to the board are the flexible kind. Sometimes the early plastics turned brittle and sturdy i guess the reason to mention it probably.
What a pity the construction of our sensitive state of the art device is not executed in the same way by 99% of its users. Throwing in an extra set of caps won't nullify the negative side effects of an " error/omission" that can be dealt with for the price a coffee and a nice cake ( not the ones from Starb...)
_MG_7271.jpg

Our notorious ex member in pastacountry gave some recommendations how to mount his clocks
 
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