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Re: How to setup and test

Posted: Fri Dec 01, 2017 7:03 am
by stupid.stupido
Hello

I tried to install the soundcard manually, because I couldnt get the .deb file working. See my previous post.

I took the steps for manual setup and dmesg :

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dmesg | grep audio 
returns nothing

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alsamixer 
shows the wrong card:
Unbenannt.JPG
Unbenannt.JPG (78.22 KiB) Viewed 7786 times

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aplay -l 
shows

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aplay: device_list:272: no soundcards found...
im using rpi3b on archlinux

should it work on fresh installed archlinux with nothing installed except debtap and gcc?

Re: How to setup and test

Posted: Thu Dec 07, 2017 1:13 pm
by flatmax
This shows you don't have any sound cards installed.

I think the first thing is to go back to trying to install using the deb package.
Once you have downloaded it - to install from the command line do the following :

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tar zxpvf audio.injector.scripts_0.1-1_all.deb.tar.gz
Then to install the package, do :

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dpkg -i audio.injector.scripts_0.1-1_all.deb
Finally do the installation :

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audioInjector-setup.sh

recording faint with in-built electret microphone

Posted: Tue Dec 12, 2017 11:09 am
by vespermems
Dear support, I have setup according to instructions on this forum to use mic input (with mic boost of 20 dB). Recording seems to work fine, but when I playback using aplay, the recording is very faint, using headphone output. Are there other setting to record off the on-board mic. Also , where is the mic located on the board.

Thanks

Re: How to setup and test

Posted: Mon Dec 18, 2017 7:20 pm
by flatmax
Which board are you using ?
Is it possible to post in an image ?

thanks
Matt

Re: How to setup and test

Posted: Sat Dec 23, 2017 11:32 pm
by egmontr
Hi Matt,

Where can I find a manual / tutorial? I am sorry but I canĀ“t find it!

Best regards
Egmont

Re: How to setup and test

Posted: Sun Dec 24, 2017 12:57 am
by egmontr
Hi Matt,

sorry to ask you, but where can I finad a manual/tutorial?

Best regards
Egmont

Re: How to setup and test

Posted: Fri Dec 29, 2017 9:28 pm
by mario
Hello,

I'm not a linux expert but I had no problems installing the soundcard; anyway I had the "famous" problem of sound going only through HDMI.
After some search I've found an explanation for my problem and maybe this can be useful for other users.
This is the interesting article: https://www.raspberrypi.org/documentation/usage/audio/
and this was the very important concept (that I didn't know):
"Note that omxplayer doesn't use ALSA and so ignores the audio configuration set by raspi-config or amixer"
This was the reason why aplay was working but the omxplayer was always playing through HDMI.
It's possible to force output over the headphone jack with:
omxplayer -o local example.mp3

I don't know if this a solution for other people but it gave me an explanation to an apparent mistery

Mario

Re: How to setup and test

Posted: Tue Jan 09, 2018 5:15 am
by turboatti
Hello!

I 've some problems to setup the stereo card.

I've the following software and hardware:
-raspberry pi 3 model b
-7" lcd touchscreen (connected via GPIO)
-AudioInjector AIH v1.5 (via GPIO)
-Raspian noobs 2.4.5 with the latest kernel update

I've done the install as you said as manually as automatically...

If I try to open the alsa mixer or command aplay -l

"alsactl: load state:1735 No sound cards found"

What way should I go forward to solve my problems?

Thanks in advance!

Re: How to setup and test

Posted: Fri Jan 12, 2018 8:32 am
by customcables067
Hoping for some help with setup. I've installed and configured according to the manual steps listed on page 1...

[ 3.662217] audioinjector-stereo soc:sound: ASoC: CPU DAI (null) not register ed - will retry
[ 3.662232] audioinjector-stereo soc:sound: snd_soc_register_card failed (-51 7)
[ 3.671883] audioinjector-stereo soc:sound: ASoC: CODEC DAI wm8731-hifi not r egistered - will retry
[ 3.671895] audioinjector-stereo soc:sound: snd_soc_register_card failed (-51 7)
[ 4.040499] audioinjector-stereo soc:sound: ASoC: CODEC DAI wm8731-hifi not r egistered - will retry
[ 4.040508] audioinjector-stereo soc:sound: snd_soc_register_card failed (-51 7)
[ 4.045739] audioinjector-stereo soc:sound: ASoC: CODEC DAI wm8731-hifi not r egistered - will retry
[ 4.045747] audioinjector-stereo soc:sound: snd_soc_register_card failed (-51 7)
[ 4.871507] audioinjector-stereo soc:sound: wm8731-hifi <-> 3f203000.i2s mapp ing ok

but...

arecord: device_list:268: no soundcards found...


Help?

Re: How to setup and test

Posted: Sun Jan 14, 2018 9:07 pm
by pzaremba
Hi,

Just checking in. Got a flatmax stereo for Pi for Christmas and just got it up and running with my RPi 3B with a fresh load of Raspbian Stretch.

audio_injector_test.jpg
audio_injector_test.jpg (69.82 KiB) Viewed 7561 times

Looking at a nice spectrogram of the 10 kHz pulsing test loopback tone. No sweat, super easy.

Granted, I am a fairly advanced Linux and RPi user...so...someone who is coming in fresh expecting plug and play might have a litter tougher time with it.

I even convinced my buddy to pick one up.

Tt's up and running, and now it's time to play with it! We are working on audio processing tools and this is going to be an excellent addition to our kit.

Thanks.

-p