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Re: sailors like slackel 7.3
Posted: 11 Aug 2020 18:58
by djemos
gnuradio, It will work for sure.
for simple screen recorder
kazam do not exist.
There is also
scrot command line it is very good. It is included in slackel iso.
Re: sailors like slackel 7.3
Posted: 11 Aug 2020 19:24
by djemos
gnuradio is on repos. You will find it under development menu.
Code: Select all
sudo slapt-get --clean
sudo slapt-get -u
sudo slapt-get -i --reinstall gnuradio
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 11:32
by juliusse
Hi, I've installed gnuradio 3.7, and it works, as the companion.
But now, I've got a problem with gqrx.
when launching gqrx:
Code: Select all
sudo gqrx
gqrx: error while loading shared libraries: libvolk.so.2.0: cannot open shared object file: No such file or directory
With the precedent version of gnuradio everything was OK.
maybe finally we should stay with the precedent version of gnuradio (eg 3.8.0.1) even if it has'nt the companion.
the companion is only mandatory for research purpose, for an usual sailor, it's not necessary to have it, and only gnuradio running background programs like gqrx or others is sufficient.
moreover, most of time, people who utilize the gnuradio companion prefer directly compile it in order to have the latest testing branch.
Having a functional gqrx is more important than be able to use gnuradio companion.
Thanks
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 13:25
by djemos
It is true when people say what it is working don't touch it.
gqrx need volk external version 2.3.0 to run and also gnuradio, gr-osmosdr, gr-iqbal
Because gr-osmosdr, gr-iqbal are compiled with volk-2.3.0, gqrx could not run.
So the first gnuradio 3.8.1.0 without gnuradio-companion uploaded on repos.
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 14:09
by juliusse
djemos wrote:It is true when people say what it is working don't touch it.
It's f...ing true...
That's exactly what I was thinking writing the previous post. I assume the entire fault of the change.
The worst thing in this is that I say that at least twice a week to people. (do as I say not as I do
).
Sorry and thanks.
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 14:22
by djemos
No problem. I saw that other people also have mention this error in 3.8.1.0 version.
gnuradio 3.9.0 is on master git so have to wait for a fix.
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 14:39
by juliusse
Yes, I saw that gnuradio 3.9 is on master. But there are big changes and I don't know for the moment how it will impact gqrx. I saw that statement about volk and gnuradio 3.9 in the blog
https://www.gnuradio.org/blog/2020-04-1 ... submodule/
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 14:53
by juliusse
here gqrx running a FM radio station
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 15:23
by juliusse
here opencpn running, connected to a GNSS(GPS) mouse, and receiving AIS data via an SDR dongle and using rtl-ais. (nota rtl-ais send then data via UCP to opencpn)
we can see my position (red boat), the triangle are the other boats, and the window is giving data of a peculiar boat which I've selected on the chart.
The split screen appeared in opencpn 5.0, making possible to have two differents scales on the same screen (or looking for two differents zones)
png telephone
Re: sailors like slackel 7.3
Posted: 12 Aug 2020 16:04
by juliusse
here a small trick. If you've not a GPS mouse, you can use your phone's GPS.
There's an Android APP (opensource), Gpsd-forwarder
https://github.com/tiagoshibata/Android-GPSd-Forwarder
As gpsd is the daemon running behind every android app needing position, and gpsd also allows to send GPS data over a net (LAN, WAN, ...). then you can receive your phone GPS data on your laptop. here working with cgps and xgps, but it also works with opencpn.
gpsd seems very basic because it's a CLI program, but it's very powerfull, it's used in spatial and military as well as civil applications. The ISS runs gpsd, nuclear missiles are running gpsd.
