Hi everyone,
in one of my recent posts I've been successfully helped in using rtlsdr~, thank you again myQwil!
The patch proposed and developed by Tom Zicarelli
[https://github.com/tkzic/pd-rtlsdr](link URL)
is used for radio demodulation, which is absolutely great, but now I wonder if anyone, beyond receiving and demodulating radio signals has developed an object or abstraction to transmit SDR - radio signals directly from PD.
Thank you and best regards
Stefano

Great myQwil!
by your kind advice i COULD MAKE IT WORK! Now, replacing the rtlsdr~.pd_linux object with the newly created one in their externals folder, both pd-vanilla and purr-data do create rtlsdr~

!

I'm so happy that my project can start from here.

Just in purr-data at the moment I can't get the audio work because of some errors that I don't understand:

here's the console report only error at start-up

libdir_loader: added 'pdlua' to the global objectclass path
tried but couldn't sync A/D/A

and then when I put the dsp on I get

error: audio I/O dropout (with a red numerical index in brackets increasing each 5/6 seconds, or so)

the dsp is working as I can see the audio signal operating, but no audio from the dac

I can't find also any place where to set the usb sound card I'm using with rpi

any idea?

anyway, at least pd-vanilla works fine and this is most important thing.

thank you again
best
stefano

thank myQwil again, I've installed the stuff you told me with

apt install librtlsdr0

apt install librtlsdr-dev

the following lines are the report from terminal

pi@raspberrypi:~ $ sudo apt install librtlsdr0
sudo: /etc/sudoers.d is world writable
[sudo] password for pi:
Reading package lists... Done
Building dependency tree
Reading state information... Done
librtlsdr0 is already the newest version (0.5.3-11+rpt1).
The following packages were automatically installed and are no longer required:
coinor-libipopt1v5 libbluray2 libmicrodns0 libmumps-seq-4.10.0 libraw15
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 1 not upgraded.
pi@raspberrypi:~ $ cd /usr/lib/pd/extra/pd-rtlsdr-master/src/pd/linux/rtlsdr~
pi@raspberrypi:/usr/lib/pd/extra/pd-rtlsdr-master/src/pd/linux/rtlsdr~ $ make
make: Nothing to be done for 'pd_linux'.

then I replaced the new [rtlsdr~.pd_linux] into the extra folder, but pd still couldn't create the object

one qustion does it work fo you with purr-data or just pd?

thank you for your patience...

best
stefano

Thank you very much myQwill for your answer!
I followed your tip, installed the librtlsdrO (zero) but nothing changed... I think tht the problem remains in the external [rtlsdrì~] that needs to be compilerd, and I don't know how to do that...

I put again here the Zicarelli git-hub repository

[https://github.com/tkzic/pd-rtlsdr](link url)

if anyone could help it's very much appreciated.

best
stefano

dear list,
I'm new here.
I'm developing a pd&software-defined radio project for a sound-art installation using rpi.

I'm trying to get purr-data working in order to obtain some software-defined radio functions into a patch. In particular I like the idea of detecting in pd the RF field, and usign radio signals as an input and as a kind of invisible/inaudible landscape (since it is not demodulated).

Tom Zicarelli developed an rtlsdr~ object

[https://github.com/tkzic/pd-rtlsdr](link url)

he says that it should be used with pd-extended but currently I'm not able to run pd-extended in rpi

the patch he put as an examle "rtlSDR-block.pd" seems to open perfectly for every object but rtlsdr~

I'have put all the rtlsdr~ files into the extra folders, but purr-data cannot create it anyway

does anybody could help me in doing this trick?

Any help is greatly appreciated!

love for your great work

stefano