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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...
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Old 30th March 2019, 05:44 PM   #21
BryceJ is offline BryceJ  Canada
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Location: Vancouver, BC
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Old 30th March 2019, 05:55 PM   #22
jacklee is offline jacklee  Hong Kong
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Join Date: Oct 2009
Quote:
Originally Posted by jacklee View Post
Thanks. I'll post some more photos on the construction process later.

Before I play anything the fifo shows empty and no lock. However once I started playing the fifo locks on (green light). How do I verify if the player is working? There is no error reported and roon seems to play normally, just no sound.
This is the ALSA info when playing via Roon:


[ SUB1 ] DietPi-JustBoom > ALSA Output Info
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 882
buffer_size: 1764


Looks correct to me.

So what software is known to work? Perhaps I can try that first to verify the stack's operation.
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Old 30th March 2019, 06:08 PM   #23
jacklee is offline jacklee  Hong Kong
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Join Date: Oct 2009
The cells ... but no taps ... so has to weld them myself!
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Old 30th March 2019, 06:12 PM   #24
jacklee is offline jacklee  Hong Kong
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Nice thing is that I can align the cells exactly where I want it. I placed tapes on both ends of the cells as well as under the board for added protection.

Now I just need to figure out the software to make it play sound.
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Old 30th March 2019, 06:18 PM   #25
redjr is offline redjr  United States
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Location: CT
IanCanada's Latest RPi GB Goodies Impressions... and your tweaks, mods and hints...
Quote:
Originally Posted by jacklee View Post
I just assembled the setup. Need some advice on setting up the dac hat in dietpi.

I installed dietpt, roon-bridge, and raspotify. The roon device is visible and can be selected:

root@DietPi:~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: bcm2835 ALSA [bcm2835 ALSA]
Subdevices: 7/7
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
card 0: ALSA [bcm2835 ALSA], device 1: bcm2835 ALSA [bcm2835 IEC958/HDMI]
Subdevices: 1/1
Subdevice #0: subdevice #0

However when I play a song via roon there is no sound output. Roon shows the song actively playing and there is no error reported. Perhaps I need to configure the DAC hat somehow?

Any pointers are most appreciated!
I wonder if Ropieee might be an easier solution. Absolutely no Linux knowledge required. It's truly a plug-n-play solution and just simply works! I use it for all my pi end-points. Once you know the IP address of your Pi, there's a very easy config screen that comes up. You literately answer a couple questions, save and reboot. Are you familiar with it? Might be worth considering if you're interested.
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Old 30th March 2019, 06:35 PM   #26
phofman is offline phofman  Czech Republic
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Join Date: Apr 2005
Location: Pilsen
Quote:
Originally Posted by redjr View Post
Absolutely no Linux knowledge required. It's truly a plug-n-play solution and just simply works!
Unless anything goes wrong, like with any highly complicated system.
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Old 30th March 2019, 08:28 PM   #27
Gallen1119 is offline Gallen1119  United States
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Join Date: Oct 2017
Location: Golden, CO
Default Noob setting up a new RPi DAC

I currently have an Allo Piano 2.1 and am considering an upgrade. Was looking at the Katana, but after reading some threads on ianCanada boards I am prob going to go with his stuff. Currently running audio out to a Harmon kardon pre and then an Aleph J.

I am a noob to DIY DAC setups, so am a bit confused on what I need to order from Ianís listings to have a complete setup. Can someone direct me to a thread or give advice on a moderately high end configuration. I currently run MoodeAudio on the RBPi.
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Old 30th March 2019, 09:46 PM   #28
wealas is offline wealas
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Join Date: Apr 2017
Quote:
Originally Posted by jacklee View Post
This is the ALSA info when playing via Roon:


[ SUB1 ] DietPi-JustBoom > ALSA Output Info
access: RW_INTERLEAVED
format: S16_LE
subformat: STD
channels: 2
rate: 44100 (44100/1)
period_size: 882
buffer_size: 1764


Looks correct to me.

So what software is known to work? Perhaps I can try that first to verify the stack's operation.
You seem to be playing 16bit stream and someone else has problems with the FifoPi 16 to 32 bit conversion. Go into Roon and add a sample rate conversion to max PCM which I think will force 32 bit output. See if that works.
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Old 30th March 2019, 09:57 PM   #29
s666foto is offline s666foto  Netherlands
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Join Date: May 2011
I second RoPiee!
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Old 30th March 2019, 10:32 PM   #30
Supersurfer is online now Supersurfer  Netherlands
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Join Date: Feb 2013
I am thinking of an alternative opamp for the IV converter.
The discrete types look promising.

The opamps I have found so far:

1) burson audio
2) sparko labs
3) Dexa


Reading some reviews I tend to prefer the sparko labs.

Please note that I use an amplifier and speaker system that is extremely resolving; an opamp with little body and too much analytics will make the sound balance tip over to cold and tiring, so an opamp with nice colours and some warmth is preferred.


Is there anybody with listening experience with these opamps? Are there other alternatives?

regards,
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