Volume control on Hifi Shield 2

Moderators: mdrjr, odroid

Volume control on Hifi Shield 2

Unread postby psm » Mon Aug 27, 2018 7:27 am

Hello
This is my first post so i would like to say "hi!" :)

A couple of months ago i've got a hifi shield 2 for my C1+
I've been using RCA output and everything was fine until i've decided to use one of free optical inputs on my CA DacMagic Plus.

Why? Because i bought a new active monitors and they have XLR inputs (like DacMagic)... and i can connect it to more than single source (two optical inputs and one async. USB).
I have chosen 'ODROID-HDMI' in Volumio... and lost volume control :(

So i have a question - is it possible to control volume while using optical output? ... with bit-perfect...?

Thank you for any tips...

Regards
P.
psm
 
Posts: 2
Joined: Mon Aug 27, 2018 6:56 am
languages_spoken: english polish
ODROIDs: Odroid C1+, Hifi Shield 2

Re: Volume control on Hifi Shield 2

Unread postby rooted » Mon Aug 27, 2018 11:59 am

AFAIK no you can't control volume with optical line out.
User avatar
rooted
 
Posts: 5458
Joined: Fri Dec 19, 2014 9:12 am
Location: Gulf of Mexico, US
languages_spoken: english
ODROIDs: C1, C1+, C2
XU3 Lite, XU4
N1
VU7+
HiFi Shield 2
Smart Power (original)

Re: Volume control on Hifi Shield 2

Unread postby cap00k » Mon Aug 27, 2018 12:09 pm

No. SPDIF is a fixed voltage level output, level control in C1+ is not possible.
Connect the SPDIF output to a Monitor Speaker controller with SPDIF Input and use the knob on the monitor controller to control levels to your monitors.
cap00k
 
Posts: 61
Joined: Tue May 21, 2013 10:46 am
languages_spoken: english
ODROIDs: ODROID

Re: Volume control on Hifi Shield 2

Unread postby psm » Fri Aug 31, 2018 8:48 pm

Hello,

So, volume control is possible only on RCA output and (as i see, on diagram), SPDIF is a simple I2S bypass...
It (opical SPDIF out) could be achieved without HiFi Shield 2...

I think it is important informatiom... maybe some update on wiki and HK's webpage?

Anyway - thank you for the information :)

Best regards,
P.
psm
 
Posts: 2
Joined: Mon Aug 27, 2018 6:56 am
languages_spoken: english polish
ODROIDs: Odroid C1+, Hifi Shield 2

Re: Volume control on Hifi Shield 2

Unread postby odroid » Mon Sep 03, 2018 8:52 am

Thank you for the suggestion.
I've added a note on the WiKi page (very bottom side).
https://wiki.odroid.com/accessory/sound ... fi-shield2
User avatar
odroid
Site Admin
 
Posts: 28610
Joined: Fri Feb 22, 2013 11:14 pm
languages_spoken: English
ODROIDs: ODROID

Re: Volume control on Hifi Shield 2

Unread postby phaseshifter » Mon Sep 03, 2018 3:43 pm

attaching a spdif optical transmitter is possible on the c-2 without using the hi-fi shield.
.i`ve done it myself..don’t know exactly where my thread or post is but if i find it..i will add a view topic to this thread..

only pins required are the spdif out /master clock and the ground and the 5 volt/3.3 power to attach the transmitter ..
just select the opticalhi fi shield..etc..etyc..
in the sound options menu..there is also the need for some software adjustments needed as well.
.i think there already in the wiki as per adding the hifi shield should do it...the software that is..
then hook up your optical and your good to go..

volume i thought was possible to adjust via the gui as normal..i found this was on a c2 ..i may be wrong been a long time..

dont think it should differ on a c1/c1+..etc.etc..although..if i dig out my hardware..bottom of the pile..i am shure it would work...as in i have to find it..

i found the board i made up here some pics..
Attachments
P1040318.JPG
P1040318.JPG (137.5 KiB) Viewed 77 times
P1040320.JPG
P1040320.JPG (154 KiB) Viewed 77 times
P1040319.JPG
P1040319.JPG (152.5 KiB) Viewed 77 times
Odroids and an amd 64 bit x86 machine..
phaseshifter
 
Posts: 2905
Joined: Fri May 08, 2015 9:12 am
languages_spoken: english
ODROIDs: N-1..c1+ ..c-2..xu3 lite,xu4...u-3..
u-2...other odroid acc`s as well


Return to I2S Devices (HiFi Shield DAC and Stereo Boom Bonnet Kit)

Who is online

Users browsing this forum: No registered users and 2 guests