[PD] How to use a DAC expansion board with the RPi4

[Ingo]

cat /proc/asound/cards	says	--- no soundcards ---
Pd doesn't see any soundcards.

I think the problem is that the DAC get its data from the GPIO pins that Pd
cannot communicate with.

I wonder if anybody made a "virtual soundcard" that talks to the RPi GPIO
and shows up as a ALSA device.

I have a very small Sounblaster card that works fine and sounds ok but it's
still too large to fit inside.
With the internal headphones out my software doesn't even start up.

I'm afraid that this won't even work at all with Pd . . .
Has anyone ever used any of these RPi DACs?

Ingo



> -----Original Message-----
> From: Pd-list [mailto:pd-list-bounces at lists.iem.at] On Behalf Of Peter P.
> Sent: Thursday, September 23, 2021 2:19 PM
> To: pd-list at lists.iem.at
> Subject: Re: [PD] How to use a DAC expansion board with the RPi4
>
> * Ingo <ingo at miamiwave.com> [2021-09-23 14:04]:
> > Hi everybody!
> >
> >
> >
> > I just got a DAC expansion board for my RPi4 but Pd doesn't see it.
> >
> > https://www.berrybase.de/en/new/argon-nanosound-one-case-f-252-r-
> raspb
> > erry-p
> > i-4?c=2389
> >
> >
> >
> > Since there is no room for a sound card in such a small box and the
> > RPi headphone out is no good it looks like the only compact way.
> >
> >
> >
> > Can anybody point me to instruction for making Pd use these DAC
> > expansion boards as a sound card?
> What do the commands
> $ pd -listdev
> $ $ cat /proc/asound/cards
> tell you about available cards?
>
> What does the manufacturer of the expansion board tell you about it?
> Will it be a separate sound card from the built-in one? Or will the
expansion
> merely provide the built-in one with more channels?
>
> You might want to subscribe to the linux audio users mailing list for
assistance
> as well.
>
> P
>
>
>
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