Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

PC Based Computer music servers, crossovers, and equalization

IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 31st March 2020, 08:18 AM   #1321
farooqniaz is offline farooqniaz  Pakistan
diyAudio Member
 
Join Date: Aug 2018
Hi
A simple question to any one who has been using this completed DAC with output transformers and Ultra Capacitors.


Anyone compared with some other commercially available DAC
  Reply With Quote
Old 31st March 2020, 10:32 PM   #1322
misterdog is offline misterdog  United Kingdom
diyAudio Member
 
Join Date: Dec 2011
Location: Sheffield
Quote:
Originally Posted by billyboyk View Post

Here is the pinout used to supply i2s to FIFOPI:

Wiring

Can anyone confirm if this pinout is correct please as I wish to split my stack.
  Reply With Quote
Old 1st April 2020, 06:48 AM   #1323
billyboyk is offline billyboyk  France
diyAudio Member
 
Join Date: Mar 2008
Location: Pays de Gex
I'm pretty sure it is OK, I manage to get signal in and out on the table. Unfortunately, after having put everthing in place in the final box, the clocks's led are flashing. I am trying to fix it with Ian.

Have a nice day !
  Reply With Quote
Old 4th April 2020, 10:18 PM   #1324
sebbyp is offline sebbyp  United Kingdom
diyAudio Member
 
Join Date: Aug 2011
Location: London
Quote:
Originally Posted by misterdog View Post
Can anyone confirm if this pinout is correct please as I wish to split my stack.
From memory that looks right.

You are only taking one ground though? I take ground for each signal cable and twist them into three pairs.
  Reply With Quote
Old 5th April 2020, 09:57 AM   #1325
billyboyk is offline billyboyk  France
diyAudio Member
 
Join Date: Mar 2008
Location: Pays de Gex
I confirm, the pinout is the right one, it works at home, I use coaxial cable with one shield connected to ground, expect for one the tree where both side is connected to ground.
  Reply With Quote
Old 5th April 2020, 01:01 PM   #1326
sebbyp is offline sebbyp  United Kingdom
diyAudio Member
 
Join Date: Aug 2011
Location: London
Co-ax cable, nice idea! I may move to that too.

Do you have a photo of how you made it tidy with the shield?

Edit: did you use 75 ohm?
  Reply With Quote
Old 6th April 2020, 09:30 AM   #1327
Grarea is offline Grarea  United Kingdom
diyAudio Member
 
Join Date: Dec 2019
Location: Cornwall
Could I ask another basic question please?
I am so new to this.
I got a LifePo4, Pi 3B+ , Fifopi, transportpi, Khadas tone board.
Loving the difference from what i had before.

Can I please check I am wired up as optimally as I can for a basic set up.
II have read stuff, but don't understand all the words, let alone the inferences.

I am poweriing pi via fifopi from non-isolated 5v output on LifePo4.
Powering fifopi from isolated 3.3v
Powering KTB from USB from Pi.
Using Coaxal from transporterpi to KTB.
Then RCA to amp.

Thanks.
  Reply With Quote
Old 7th April 2020, 04:32 PM   #1328
misterdog is offline misterdog  United Kingdom
diyAudio Member
 
Join Date: Dec 2011
Location: Sheffield
Quote:
Originally Posted by Grarea View Post
I am poweriing pi via fifopi from non-isolated 5v output on LifePo4.

Powering KTB from USB from Pi.
The Pi is a very noisy device, I would use the other non-isolated 5V from LiFeP04 as a minimum. The Pi has a shared USB/ethernet bus and DC switchers which will add noise to the supply of your KTB.

Better still use a separate super regulated supply for the KTB.

Last edited by misterdog; 7th April 2020 at 04:36 PM.
  Reply With Quote
Old 7th April 2020, 05:13 PM   #1329
wlowes is offline wlowes  Canada
diyAudio Member
 
wlowes's Avatar
 
Join Date: Mar 2007
Location: Toronto
Agreed. Any good PS will be a step up.
I am not clear on how you feed signal to the DAC. It sounds like USB and then the DAC reclocks? If so it seems to not take advantage of FIFOPi. Perhaps I'm confused.
  Reply With Quote
Old 7th April 2020, 05:24 PM   #1330
Grarea is offline Grarea  United Kingdom
diyAudio Member
 
Join Date: Dec 2019
Location: Cornwall
Quote:
Originally Posted by misterdog View Post
The Pi is a very noisy device, I would use the other non-isolated 5V from LiFeP04 as a minimum. The Pi has a shared USB/ethernet bus and DC switchers which will add noise to the supply of your KTB.

Better still use a separate super regulated supply for the KTB.
OK, thank you for that.
LiFePO4 only has the one non-isolated 5v, but can use one of the other isolated outputs.

I was vaguely wondering that.
  Reply With Quote

Reply


IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Detailed specifics, hints and tweaks in designing a sealed sub Squeak Subwoofers 1 17th July 2015 03:27 PM
The latest tweaks :) lowtherdream Everything Else 6 13th January 2009 05:43 PM
S5 K-16LS mods, tweaks? hartze11 Tubes / Valves 3 1st December 2008 05:13 AM
NAD C541i: possible tweaks and mods? Karlosak Digital Source 4 23rd November 2006 06:20 PM
Any mods/tweaks for a Panasonic DVD S-49 mikee55 Digital Source 4 19th March 2006 07:04 AM


New To Site? Need Help?

All times are GMT. The time now is 07:32 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Copyright ©1999-2020 diyAudio
Wiki