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

[Ingo]

I guess I'll try to find out from the manufacturer if they know how to do
it.
I had already contacted the store where I bought it if they have any idea.
I don't even know if the DAC is made by ARGON or by a 3rd party
manufacturer.
There's no documentation other than "Install Volumino".


> > I wonder if anybody made a "virtual soundcard" that talks to the RPi
> > GPIO and shows up as a ALSA device.
> This would be so complicated that I don't expect the manufacturers to
force
> you to do this.

Not sure if it would be so complicated - of course for me it would
definitely be too difficult to do, though.
I think that all of those DAC expansion boards talk to the same pins.
Once it's done it should be rather universal.
But probably each manufacturer does its own thing - as usual!

Ingo


> -----Original Message-----
> From: Pd-list [mailto:pd-list-bounces at lists.iem.at] On Behalf Of Peter P.
> Sent: Thursday, September 23, 2021 3:50 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 15:35]:
> > 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 would ask the manufacturers of this
> https://www.berrybase.de/en/new/argon-nanosound-one-case-f-252-r-
> raspberry-pi-4?c=2389
> how their sound card can be accessed or if specific drivers (called
"Modules"
> in linux) have to be loaded.
>
> > I wonder if anybody made a "virtual soundcard" that talks to the RPi
> > GPIO and shows up as a ALSA device.
> This would be so complicated that I don't expect the manufacturers to
force
> you to do this.
>
>
>
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