dspira-lessons/forum/gnuradio/ #7
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Greetings DSPIRA, I love the idea of measuring hydrogen in the Milky Way. Having learnt about DSPIRA from an article in The Physics Teacher, I built the telescope during summer break, and am now trying to test it. I have been trying to run the spectrometer_w_cal.grc program. However, I seem to get an error. .....
..... However, the Execute button is greyed out, and when I hit it anyway, this message appears: ..... Executing: /usr/bin/python3 -u /home/ubuntu/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py Warning: failed to XInitThreads() The signal in the Spectrum graph is very weak, so I suspect something's wrong. I'd be grateful for any suggestions. Kind regards, Morten Christensen |
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Dear Morten Christensen,
Your messages are all reasonable warnings, but not errors.
If you are seeing a signal at all, then your software is fine.
If the signal is weak, than perhaps you need a more powerful amplifier.
What amplifier are you using?
It is likely that you need to update the gain settings for your AIRSPY mini.
This is done using gnuradio-companion.
I think that now you set only the LNA gain; try between 15 and 20
Set the other two gains to zero, which enables the software to optimize
These other gain values.
Maybe also email a screen shot of your spectrum.
In addition, you could try
python3 NsfIntegrate60.py
Best regards
Glen
From: skywise-8 ***@***.***>
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Subject: [EXTERNAL] - Re: [WVURAIL/dspira-lessons] dspira-lessons/forum/gnuradio/ (#7)
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Greetings DSPIRA,
I love the idea of measuring hydrogen in the Milky Way. Having learnt about DSPIRA from an article in The Physics Teacher, I built the telescope during summer break, and am now trying to test it.
I have been trying to run the spectrometer_w_cal.grc program. However, I seem to get an error.
I'm running Ubuntu from a flashdrive. GNU radio opens nicely, with the spectrometer program displayed:
.....
<<< Welcome to GNU Radio Companion 3.8.1.0 >>>
Block paths:
/usr/share/gnuradio/grc/blocks
/usr/local/share/gnuradio/grc/blocks
Loading: "/home/ubuntu/gr-radio_astro/examples/DSPIRA/spectrometer_w_cal.grc"
Done
.....
However, the Execute button is greyed out, and when I hit it anyway, this message appears:
.....
Generating: '/home/ubuntu/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py'
Executing: /usr/bin/python3 -u /home/ubuntu/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py
Warning: failed to XInitThreads()
gr-osmosdr 0.2.0.0 (0.2.0) gnuradio 3.8.1.0
built-in source types: file osmosdr fcd rtl rtl_tcp uhd miri hackrf bladerf rfspace airspy airspyhf soapy redpitaya freesrp
Using AirSpy MINI v1.0.0-rc10-0-g946184a 2016-09-19, samplerates: 3M 6M
.....
The signal in the Spectrum graph is very weak, so I suspect something's wrong.
I'd be grateful for any suggestions.
Kind regards,
Morten Christensen
Copenhagen, Denmark
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Dear Glen Thank you so much for your reply. I am getting a signal, sort of, though very weak. In the spectrometer_w_cal.grc program, the only reference to gain I see is in the “osmocom Source”-box. However, there is RF Gain, IF Gain and BB Gain. Default values are 17, 12, 10 respectively. I'm attaching screenshots of the spectrometer_w_cal.grc program. No changes to the gain settings in the "osmocom Source"-box on the left. Then graphs before and after calibration. Btw, the Airspy Mini is getting awfully hot. Is this normal? Kind regards,
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Hi Morten,
The RF Gain should be 20 to 25, I think,
Set the other gains to zero, if the automatic adjustment of gain is working in
your version of the code.
If the signal is still weak, then set the RF gain to 20 and the
other two gains to 15, the maximum, I think.
Glen
Glen I Langston, Ph. D.
Galactic Astronomy Program Director
National Science Foundation
304-456-3032
… On Sep 3, 2021, at 11:38 AM, skywise-8 ***@***.***> wrote:
This email originated from outside of the National Science Foundation. Do not click links or open attachments unless you recognize the sender and know the content is safe.
Dear Glen
Thank you so much for your reply.
I am getting a signal, sort of, though very weak.
I’m using the Nooelec SAWbird +H1 LNA.
In the spectrometer_w_cal.grc program, the only reference to gain I see is in the “osmocom Source”-box. However, there is RF Gain, IF Gain and BB Gain. Default values are 17, 12, 10 respectively.
Which of these should be set to zero?
I'm attaching screenshots of the spectrometer_w_cal.grc program. No changes to the gain settings in the "osmocom Source"-box on the left. Then graphs before and after calibration.
Btw, the Airspy Mini is getting awfully hot. Is this normal?
Kind regards,
Morten
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I am attempting to run spectrometer_w_cal.grc. It fails and I get these messages: Generating: '/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py' Any suggestions on how to solve this problem would be appreciated! |
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Hi
Hope all are doing well and gathering lots of observations.
I’ve been working to accurately make a map of all the observations.
Here is a link to a couple Jupyter notebooks for preparing for making
the maps. These are intended for student use.
See:
https://github.com/glangsto/jupyter/tree/master/offsets
The two notebooks at this location do not require any data, but
rather show how to understand your observations.
As an added bonus, the 2nd notebook shows how to get
your home address in Earth X,Y,Z coordinates and
calculate your distance from the GBT.
To use (in a linux box) type:
cd ~
pip3 install jupyterlab
git clone http://www.github.com/glangsto/jupyter
cd jupyter/offsets
jupyter-lab
Have fun,
Glen
I just tested that this works great in the Raspberry PI Os
that Franco just finished.
It takes about 60 seconds for jupyter lab to open up,
You need to click on the notebooks to run them.
Glen I Langston, Ph. D.
Galactic Astronomy Program Director
National Science Foundation
304-456-3032
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Hi Tom,
It looks like you’re running this on a Raspberry Pi (good).
Somehow the radio_astro code is not in your python path.
Which version of the operating system do you have?
(ie when did you get it?)
It might be best to get the latest version, which is on a google drive.
The installation guide is here:
https://drive.google.com/file/d/1ssS_zBQWDEXMENc2_aqqPGxGkEEU5Ea3/view?usp=sharing
The slightly newer operating system version is:
https://drive.google.com/file/d/11H1g03-TW1jDbSlozNbuUKCPifASMEBF/view?usp=sharing
With this version you should be logging in as
radioastro (word: Aficionado)
Glen
Glen I Langston, Ph. D.
Galactic Astronomy Program Director
National Science Foundation
304-456-3032
… On Feb 5, 2022, at 10:47 AM, Tconsi ***@***.***> wrote:
This email originated from outside of the National Science Foundation. Do not click links or open attachments unless you recognize the sender and know the content is safe.
I am attempting to run spectrometer_w_cal.grc. It fails and I get these messages:
Generating: '/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py'
Executing: /usr/bin/python3 -u /home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py
Warning: failed to XInitThreads()
Traceback (most recent call last):
File "/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py", line 43, in
import radio_astro
ModuleNotFoundError: No module named 'radio_astro'
Any suggestions on how to solve this problem would be appreciated!
Tom
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Tom, There are a couple of things to check: Is gr-raduo_astro installed on your computer? Also, check that the python environment has been set. These extra steps are needed after gr-radio_astro has been installed and "make installed". Refer to the "Additional Steps for setting the proper Python environment" under Installing gr-radio_astro in the Telescope Software Setup module. If you've already done this, then restart the terminal. If it still doesn't work, we can troubleshoot from there. John |
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Hi Tom and John,
John has a good point. If you’ve downloaded the code from GitHub,
Then you need to build and install the code.
On a raspberry pi, this is done with:
cd ~
git clone http://www.github.com/WVURAIL/gr-radio_astro
cd gr-radio_astro
mkdir build
cd build
cmake ..
make -j 3
sudo make install
sudo ldconfig
You’ve probably done a few of these steps.
Good luck,
Glen
… On Feb 5, 2022, at 1:28 PM, jmakous ***@***.***> wrote:
Tom,
There are a couple of things to check: Is gr-raduo_astro installed on your computer? Also, check that the python environment has been set. These extra steps are needed after gr-radio_astro has been installed and "make installed". Refer to the "Additional Steps for setting the proper Python environment" under Installing gr-radio_astro in the Telescope Software Setup module.
If you've already done this, then restart the terminal. If it still doesn't work, we can troubleshoot from there.
John
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Glen,
Thanks for the quick response and the info. I decided to install the
operating system with gnu radio and your telescope software already
installed. It worked like a charm!
My telescope is now outside gathering data.
Cheers!
Tom
On Sat, Feb 5, 2022 at 12:34 PM Glen Langston ***@***.***>
wrote:
… Hi Tom,
It looks like you’re running this on a Raspberry Pi (good).
Somehow the radio_astro code is not in your python path.
Which version of the operating system do you have?
(ie when did you get it?)
It might be best to get the latest version, which is on a google drive.
The installation guide is here:
https://drive.google.com/file/d/1ssS_zBQWDEXMENc2_aqqPGxGkEEU5Ea3/view?usp=sharing
The slightly newer operating system version is:
https://drive.google.com/file/d/11H1g03-TW1jDbSlozNbuUKCPifASMEBF/view?usp=sharing
With this version you should be logging in as
radioastro (word: Aficionado)
Glen
Glen I Langston, Ph. D.
Galactic Astronomy Program Director
National Science Foundation
304-456-3032
> On Feb 5, 2022, at 10:47 AM, Tconsi ***@***.***> wrote:
>
> This email originated from outside of the National Science Foundation.
Do not click links or open attachments unless you recognize the sender and
know the content is safe.
>
>
>
>
> I am attempting to run spectrometer_w_cal.grc. It fails and I get these
messages:
>
> Generating:
'/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py'
> Executing: /usr/bin/python3 -u
/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py
> Warning: failed to XInitThreads()
> Traceback (most recent call last):
> File "/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py",
line 43, in
> import radio_astro
> ModuleNotFoundError: No module named 'radio_astro'
>
> Any suggestions on how to solve this problem would be appreciated!
> Tom
>
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Hi Tom,
Excellent news!
Enjoy your very own view of the Universe.
Take Care
Glen
Glen I Langston, Ph. D.
Galactic Astronomy Program Director
National Science Foundation
304-456-3032
… On Feb 5, 2022, at 7:08 PM, Tconsi ***@***.***> wrote:
Glen,
Thanks for the quick response and the info. I decided to install the
operating system with gnu radio and your telescope software already
installed. It worked like a charm!
My telescope is now outside gathering data.
Cheers!
Tom
On Sat, Feb 5, 2022 at 12:34 PM Glen Langston ***@***.***>
wrote:
> Hi Tom,
>
> It looks like you’re running this on a Raspberry Pi (good).
>
> Somehow the radio_astro code is not in your python path.
>
> Which version of the operating system do you have?
> (ie when did you get it?)
>
> It might be best to get the latest version, which is on a google drive.
> The installation guide is here:
>
>
> https://drive.google.com/file/d/1ssS_zBQWDEXMENc2_aqqPGxGkEEU5Ea3/view?usp=sharing
>
> The slightly newer operating system version is:
>
> https://drive.google.com/file/d/11H1g03-TW1jDbSlozNbuUKCPifASMEBF/view?usp=sharing
>
> With this version you should be logging in as
>
> radioastro (word: Aficionado)
>
> Glen
>
> Glen I Langston, Ph. D.
> Galactic Astronomy Program Director
> National Science Foundation
> 304-456-3032
>
> > On Feb 5, 2022, at 10:47 AM, Tconsi ***@***.***> wrote:
> >
> > This email originated from outside of the National Science Foundation.
> Do not click links or open attachments unless you recognize the sender and
> know the content is safe.
> >
> >
> >
> >
> > I am attempting to run spectrometer_w_cal.grc. It fails and I get these
> messages:
> >
> > Generating:
> '/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py'
> > Executing: /usr/bin/python3 -u
> /home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py
> > Warning: failed to XInitThreads()
> > Traceback (most recent call last):
> > File "/home/pi/gr-radio_astro/examples/DSPIRA/DSPIRA_Spectrometer.py",
> line 43, in
> > import radio_astro
> > ModuleNotFoundError: No module named 'radio_astro'
> >
> > Any suggestions on how to solve this problem would be appreciated!
> > Tom
> >
> > —
> > Reply to this email directly, view it on GitHub, or unsubscribe.
> > Triage notifications on the go with GitHub Mobile for iOS or Android.
> > You are receiving this because you commented.
> >
>
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Glen, I've been having a problem with spectrometer_w_cal.grc running on my Raspberry Pi 4 (8GB memory). I have the Raspbian build that you recommended which contains GNU radio and the DSPIRA program. I call the program from the GNU radio companion. It works fine and I can initialize parameters but the system locks-up when I try to return to the GNU radio companion, and after a minute or so I get a "system not responding" message. I have to select exit and then restart GNU radio companion. Any help would be appreciated, Tom |
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When I try to run the spectrometer_w_cal.grc program, it won't let me execute and the triangle button is grayed out. I think the problem is with the very first block, where I get an error that says 'ID "osmosdr_source_0" does not exist.' Can anyone help me understand what the problem is? I am very new to all of this. Thanks in advance. Evan |
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Hi Evan can you send us a screen shot of the flow graph with the error? And the first block. Is the block just red and showing an error or does it say “missing block” ?
Pranav Sanghavi
… On Aug 30, 2022, at 3:58 PM, ehalstea ***@***.***> wrote:
When I try to run the spectrometer_w_cal.grc program, it won't let me execute and the triangle button is grayed out. I think the problem is with the very first block, where I get an error that says 'ID "osmosdr_source_0" does not exist.' Can anyone help me understand what the problem is? I am very new to all of this. Thanks in advance.
Evan
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Thank you for the prompt reply! Here is a screenshot. It does say "missing block."
[cid:8e032cce-0936-4cf6-b71d-80e6f99e4556]
________________________________
From: Pranav Sanghavi ***@***.***>
Sent: Tuesday, August 30, 2022 6:12 PM
To: WVURAIL/dspira-lessons ***@***.***>
Cc: Evan Halstead ***@***.***>; Comment ***@***.***>
Subject: Re: [WVURAIL/dspira-lessons] dspira-lessons/forum/gnuradio/ (#7)
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Hi Evan can you send us a screen shot of the flow graph with the error? And the first block. Is the block just red and showing an error or does it say “missing block” ?
Pranav Sanghavi
On Aug 30, 2022, at 3:58 PM, ehalstea ***@***.***> wrote:
When I try to run the spectrometer_w_cal.grc program, it won't let me execute and the triangle button is grayed out. I think the problem is with the very first block, where I get an error that says 'ID "osmosdr_source_0" does not exist.' Can anyone help me understand what the problem is? I am very new to all of this. Thanks in advance.
Evan
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Hm, that didn't seem to work. How do I attach a screenshot here? |
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Don’t worry about it can’t seem to attach images to github emails. I think I know what’s wrong you probably I don’t have gr-osmosdr installed.
You need to install it by sudo apt install gr-osmosdr on Ubuntu and I’m sure you can figure out for other OSs. Once that restart terminal and try it again
Pranav Sanghavi
… On Aug 30, 2022, at 6:58 PM, ehalstea ***@***.***> wrote:
Hm, that didn't seem to work. How do I attach a screenshot here?
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Hi Evan I agree with Pranav Sanghavi, you probably don't have gr-osmosdr installed. For what it's worth: I struggled with a (partly) similar problem, and only solved it by installing Gnuradio and gr-radio_astro exactly like described in DSPIRA-lessons. I think Gnuradio 3.8.1 is necessary for spectrometer_w_cal.grc to run properly. (That is, not the newest version of Gnuradio). I followed the instructions exactly like on these two pages: Only then would spectrometer_w_cal.grc run. Best regards, Morten |
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Thanks, Pranav and Morten. I think part of the problem is that I am trying to do this on a Mac, so I can't follow the installation instructions exactly. I did manage to install gr-osmosdr using macports, but I'm still getting the same error as before.
Evan
…________________________________
From: skywise-8 ***@***.***>
Sent: Wednesday, August 31, 2022 10:44 AM
To: WVURAIL/dspira-lessons ***@***.***>
Cc: Evan Halstead ***@***.***>; Comment ***@***.***>
Subject: Re: [WVURAIL/dspira-lessons] dspira-lessons/forum/gnuradio/ (#7)
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Hi Evan
I agree with Pranav Sanghavi, you probably don't have gr-osmosdr installed.
For what it's worth: I struggled with a (partly) similar problem, and only solved it by installing Gnuradio and gr-radio_astro exactly like described in DSPIRA-lessons. I think Gnuradio 3.8.1 is necessary for spectrometer_w_cal.grc to run properly. (That is, not the newest version of Gnuradio).
I followed the instructions exactly like on these two pages:
https://wvurail.org//dspira-lessons/GNURadio_Installation
https://wvurail.org//dspira-lessons/gr_radio_astro_Installation
Only then would spectrometer_w_cal.grc run.
Best regards, Morten
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I have installed Ubuntu on my Raspberry Pi 4 following the instructions on the DSPIRA website and am now installing gr-radio_astro. When I get to step 7 and type "sudo make" I get the following error code: wherzog@wherzog-desktop: I'm not sure what to make of all this. Does anyone have any suggestions how I can correct these errors? |
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I have completed the construction of the horn, can, stand, and LNA. I have also installed Ubuntu desktop 22.04.1 LTS (RPI 4/400) OS in a Raspberry Pi 4 with 8 GB of memory and a 128 GB microSD card. I am in the processing of downloading the gr-radio_astro software according to the instructions at this link (https://wvurail.org/dspira-lessons/gr_radio_astro_Installation) and have encountered an error which I'm unable to resolve. At step 7 of the instructions when I type "sudo make" the following error code is produced: wherzog@herzog-desktop:~/gr-radio_astro/build$ sudo make I would greatly appreciate any suggestions offered as to how I can fix this error. |
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Hi dr. Langston, Best Regards |
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Hello Gianni,
Well first of all, congratulations of great success. It is challenging to build
that LNA, but if you have 240 K system temperature that is pretty good. Certainly
you can see the Milky Way pretty easily with that level of system temperature.
One preliminary step that is easy and would help assess what is going on is
to measure only the amplifier effective temperature (called T_rx).
There are two excellent memos on this topic (I wrote only one of them!)
Please report back on what you measure.
https://github.com/WVURAIL/lightwork/blob/master/memos/LightWorkMemo028-r7-NoiseTemp.pdf
and
https://github.com/WVURAIL/lightwork/blob/master/memos/LightWork0030-r1-ATaleOfThreeLNAs.pdf
by David Mulder.
Good Luck.
Glen
… On Sep 16, 2022, at 11:06 AM, GiaCet ***@***.***> wrote:
Hi dr. Langston,
I assembled Prof. Bandura's project LNA. I tried using your NFINtegrate100 and NFSIntegrate24 procedures. Both procedures, after following the steps in his LightWork 28 memo paper, always give me a constant intensity over the entire spectrum band of about 240K. As you always wrote in the paper, I would have expected much better values.
I have tried several times, changing the various gains, but the result is more or less the same.
Have you ever had the opportunity to try prof. Bandura? If so, with what results?
Best Regards
Gianni
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Hello dr.Langston In the next few days I will do some checks at the LNA and I try tests again following the memos. Best Regards |
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Hello Dr.langston, good news!!! Best Regards |
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Hello Gianni,
Congratulations on your excellent results!
Very glad to hear the test procedure worked for you.
Please send pictures of your setup and your horn/telescope.
Best regards
Glen
… On Sep 22, 2022, at 9:33 AM, GiaCet ***@***.***> wrote:
Hello Dr.langston, good news!!!
I checked the LNA pcb and I found some errors; two resistors did not work correctly.
After fixing the problem, with NFSIntegrate100 procedure, I get an average value of 51k constant over the whole spectrum after 1 hour of operation.
I would say a good result.
I will assemble another LNA!!!!
Best Regards
Gianni
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Does gr-radio_astro require exactly version 3.8.1 of Gnuradio? If so, how do you install a version that is not the latest version? Thanks, |
Hi Evan, Yes, the main branch of gr-radio_astro is meant for GNURadio 3.8. If you are inclined to install for GNURadio 3.7 you can The latest most recently updated version of the software updated to run with GNURadio 3.10 is in the gr310 branch (it is planned to be merged in to the main brain soon). best, |
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Hello DSPIRA Team, Really appreciate what the team is doing, this is a wonderful resource. Among other things, I have been experimenting with the bootable Ubuntu 22.04 image here: https://wvurail.org//dspira-lessons/Install_Ubuntu_spectrometer_onFlashdrive When I flash the ubuntu_radio_astro08_2022_2.img image onto a 64G USB drive, the drive does not show up as bootable when I restart my PC. I tried flashing with both Balena Etcher and Rufus and I didn't notice any difference in behavior. To verify my process, I tried flashing Ubuntu 22.04 directly from the Ubuntu site and the USB drive does show up and Ubuntu runs as expected. Anybody else notice this? Thanks, |
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Hi Tom, Thanks for the message and brining this to our attention. We haven’t quite seen this before in our tests. However would you share what kind (brand/model) USB are you using. I can acquire one and see if I can replicate your issue. Best, Pranav SanghaviOn Nov 23, 2022, at 10:10 AM, TomMHO ***@***.***> wrote:
Hello DSPIRA Team,
Really appreciate what the team is doing, this is a wonderful resource. Among other things, I have been experimenting with the bootable Ubuntu 22.04 image here:
https://wvurail.org//dspira-lessons/Install_Ubuntu_spectrometer_onFlashdrive
When I flash the ubuntu_radio_astro08_2022_2.img image onto a 64G USB drive, the drive does not show up as bootable when I restart my PC. I tried flashing with both Balena Etcher and Rufus and I didn't notice any difference in behavior.
To verify my process, I tried flashing Ubuntu 22.04 directly from the Ubuntu site and the USB drive does show up and Ubuntu runs as expected.
Anybody else notice this?
Thanks,
Tom Hagen
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Hi Tom,
Thanks for your great work. THis may not be relevant,
but for Raspberry Pi sometimes the 64GB usb drive don’t
book, while the 32Gb drives do boot.
Thanks for your efforts. Please keep us posted on your progress.
Glen
… On Nov 23, 2022, at 12:47 PM, Pranav Sanghavi ***@***.***> wrote:
Hi Tom, Thanks for the message and brining this to our attention. We haven’t quite seen this before in our tests. However would you share what kind (brand/model) USB are you using. I can acquire one and see if I can replicate your issue. Best, Pranav SanghaviOn Nov 23, 2022, at 10:10 AM, TomMHO ***@***.***> wrote:
Hello DSPIRA Team,
Really appreciate what the team is doing, this is a wonderful resource. Among other things, I have been experimenting with the bootable Ubuntu 22.04 image here:
https://wvurail.org//dspira-lessons/Install_Ubuntu_spectrometer_onFlashdrive
When I flash the ubuntu_radio_astro08_2022_2.img image onto a 64G USB drive, the drive does not show up as bootable when I restart my PC. I tried flashing with both Balena Etcher and Rufus and I didn't notice any difference in behavior.
To verify my process, I tried flashing Ubuntu 22.04 directly from the Ubuntu site and the USB drive does show up and Ubuntu runs as expected.
Anybody else notice this?
Thanks,
Tom Hagen
—Reply to this email directly, view it on GitHub, or unsubscribe.You are receiving this because you commented.Message ID: ***@***.***>
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You are receiving this because you commented.
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Hello Pranav and Glen,
I'm using Samsung USB sticks, I like them because they are about the
fastest on the market. I tried a Samsung 32G usb stick and it didn't
change anything, i.e., it acts like the 64G stick.
Here's the 64G I'm using:
https://www.bhphotovideo.com/c/product/1417049-REG/samsung_muf_64ab_am_samsung_fit_plus_64gb.html
Here's a 128G that looks like my 32G drive, looks like 32G may no longer be
available:
https://www.bhphotovideo.com/c/product/1405986-REG/samsung_muf_128be4_am_128gb_bar_plus_usb.html
Thanks for your help,
Tom
On Wed, Nov 23, 2022 at 12:51 PM Glen Langston ***@***.***>
wrote:
… Hi Tom,
Thanks for your great work. THis may not be relevant,
but for Raspberry Pi sometimes the 64GB usb drive don’t
book, while the 32Gb drives do boot.
Thanks for your efforts. Please keep us posted on your progress.
Glen
> On Nov 23, 2022, at 12:47 PM, Pranav Sanghavi ***@***.***> wrote:
>
>
> Hi Tom, Thanks for the message and brining this to our attention. We
haven’t quite seen this before in our tests. However would you share what
kind (brand/model) USB are you using. I can acquire one and see if I can
replicate your issue. Best, Pranav SanghaviOn Nov 23, 2022, at 10:10 AM,
TomMHO ***@***.***> wrote:
> Hello DSPIRA Team,
> Really appreciate what the team is doing, this is a wonderful resource.
Among other things, I have been experimenting with the bootable Ubuntu
22.04 image here:
>
https://wvurail.org//dspira-lessons/Install_Ubuntu_spectrometer_onFlashdrive
> When I flash the ubuntu_radio_astro08_2022_2.img image onto a 64G USB
drive, the drive does not show up as bootable when I restart my PC. I tried
flashing with both Balena Etcher and Rufus and I didn't notice any
difference in behavior.
> To verify my process, I tried flashing Ubuntu 22.04 directly from the
Ubuntu site and the USB drive does show up and Ubuntu runs as expected.
> Anybody else notice this?
> Thanks,
> Tom Hagen
>
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Hi DSPIRA Team, I am a working to get this project running for my high school astronomy class. We have built the horns but now I am having trouble getting the program to download/install properly. I am working in Ubuntu on a windows machine (Acer Aspire 5) and have been trying to follow the instructions for commands in the terminal but have encountered some messages that I think is affecting GNURadio working. I am at the step of error: could not convert 'gnuradio::get_intial_sptr(T*) with T = gr::radio_astro::dedispersion_impl' from 'std::shared_ptr<gr::radio_astro::dedispersion_impl.' to 'gr::radio_astro::dedispersion::sptr' {aka 'boost::shared_ptr<gr::radio_astro::dedispersion.'} 34| return gnuradio::get_initial_sptr I get the same message when if I try and move on to the command sudo make install. I can open GNURadio but I cannot get the triangle to not be greyed out even if I try and follow the basic spectrometer instructions which only has a few parts to it. I do not know Linux and am learning as I tackle this project. ANY HELP you can give would be greatly appreciated! Thank you, |
|
Hi Kenric so glad to hear you built horns and are trying to get the software working. To get a better handle on what May or maybe but work can you tell us what do you mean by Ubuntu on windows. Are you using windows subsystem on Linux or have you made a partition on the computer to have a fresh Linux install. Also what’s the Python and gun radio versions. Also while you’re at it, you want to maybe try reinstalling. Clone the most current version of gr-radio_astro from GitHub from the main branch. I recently updated the software this afternoon. Let me know if the problem persists. Pranav SanghaviOn Feb 16, 2023, at 8:09 PM, kenric-davies ***@***.***> wrote:
Hi DSPIRA Team,
I am a working to get this project running for my high school astronomy class. We have built the horns but now I am having trouble getting the program to download/install properly. I am working in Ubuntu on a windows machine (Acer Aspire 5) and have been trying to follow the instructions for commands in the terminal but have encountered some messages that I think is affecting GNURadio working. I am at the step of
cmake .. (which I think worked fine). Now, I did sudo make and am seeing the following response -
error: could not convert 'gnuradio::get_intial_sptr(T*) with T = gr::radio_astro::dedispersion_impl' from 'std::shared_ptr<gr::radio_astro::dedispersion_impl.' to 'gr::radio_astro::dedispersion::sptr' {aka 'boost::shared_ptr<gr::radio_astro::dedispersion.'}
34| return gnuradio::get_initial_sptr
| ~~~~~~~~~~~~~~~~~~~
35| (new dedispersion_impl(vec_length, dms, f_obs,bw,t_int, nt));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| std::shared_ptrgr::radio_astro::dedispersion_impl
make[2]: ***[lin/CMakeFiles/gnuradio-radio_astro.dir/build.make:76: lib/CMakeFiles/gnuradio-radio_astro.dir/dedispersion_impl.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:233: lib/CMakeFiles/gnuradio-radio_astro.dir/all] Error 2
make: *** [Makefile146: all] Error 2
I get the same message when if I try and move on to the command sudo make install.
I can open GNURadio but I cannot get the triangle to not be greyed out even if I try and follow the basic spectrometer instructions which only has a few parts to it.
I do not know Linux and am learning as I tackle this project. ANY HELP you can give would be greatly appreciated!
Thank you,
Kenric
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Hi Kenric, the DSPIRA tools are well worth the effort, you’ll be happy
with them.
I had problems myself when I tried installing the setup using Ubuntu
22.04. I switched to 20.04 and things worked fine. I think I was at the
same step that’s tripping you up, don’t recall for sure. Hope this helps!
Tom
…On Thu, Feb 16, 2023 at 8:09 PM kenric-davies ***@***.***> wrote:
Hi DSPIRA Team,
I am a working to get this project running for my high school astronomy
class. We have built the horns but now I am having trouble getting the
program to download/install properly. I am working in Ubuntu on a windows
machine (Acer Aspire 5) and have been trying to follow the instructions for
commands in the terminal but have encountered some messages that I think is
affecting GNURadio working. I am at the step of
cmake .. (which I think worked fine). Now, I did sudo make and am seeing
the following response -
error: could not convert 'gnuradio::get_intial_sptr(T*) with T =
gr::radio_astro::dedispersion_impl' from
'std::shared_ptr<gr::radio_astro::dedispersion_impl.' to
'gr::radio_astro::dedispersion::sptr' {aka
'boost::shared_ptr<gr::radio_astro::dedispersion.'}
34| return gnuradio::get_initial_sptr
| ~~~~~~~~~~~~~~~~~~~
35| (new dedispersion_impl(vec_length, dms, f_obs,bw,t_int, nt));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| std::shared_ptrgr::radio_astro::dedispersion_impl
make[2]: ***[lin/CMakeFiles/gnuradio-radio_astro.dir/build.make:76:
lib/CMakeFiles/gnuradio-radio_astro.dir/dedispersion_impl.cc.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:233:
lib/CMakeFiles/gnuradio-radio_astro.dir/all] Error 2
make: *** [Makefile146: all] Error 2
I get the same message when if I try and move on to the command sudo make
install.
I can open GNURadio but I cannot get the triangle to not be greyed out
even if I try and follow the basic spectrometer instructions which only has
a few parts to it.
I do not know Linux and am learning as I tackle this project. ANY HELP you
can give would be greatly appreciated!
Thank you,
Kenric
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Hi Pranav and Tom, Thanks for reaching out so quickly! Pranav - I could not get the bootable flashdrive option to work for me so I followed the instructions to install Ubuntu on a windows machine posted in DSPIRA. It is my understanding that I partitioned the hard drive and am running this as a separate operating system. (I have to make a choice as to which operating system I want every time I turn on my computer). When following the guide to install the software, I have GNU Radio 3.10.1.1 (Python 3.10.6) listed in the About section of the program. I know these aren't the versions listed in the instructions but I did everything as written and this is what downloaded. Tom - I am running 22.04, that is what downloaded through the instructions on the DSPIRA page. How would I go about getting the earlier version of the platform? Thanks again for all of the help! I am a complete novice when it comes to this but am always willing to learn new things to provide new/fun experiences for my students. Kenric |
|
Kenric:
I wasn't able to get the bootable flash drive option to work either.
Do you need the amd64 version of Ubuntu? This link should work for you if
you want to boot on a PC from a USB stick.
https://ubuntu-mate.org/download/amd64/focal/
I used Ubuntu-MATE on an Odroid XU4 device the last time I set this up and
the MATE Ubuntu 20.04 version for Odroid worked for me. I was able to run
the *spectrometer_w_cal.grc* GNU Radio sketch but I was not able to run
some of the older sketches found in the nsf directory for some reason. The
*spectrometer_w_cal.grc* sketch is the important one and it's the one I
run all the time. I also got it to run on a Raspberry Pi4 using the 20.04
Raspberry Pi OS version.
Also attached is a paper I wrote for SARA about setting up the Odroid, it
may be helpful too. If you're not a Society of Amateur Radio Astronomers
member, you might consider joining!
I know you'll get through this,
Tom
…On Fri, Feb 17, 2023 at 8:53 AM kenric-davies ***@***.***> wrote:
Hi Pranav and Tom, Thanks for reaching out so quickly!
Pranav - I could not get the bootable flashdrive option to work for me so
I followed the instructions to install Ubuntu on a windows machine posted
in DSPIRA. It is my understanding that I partitioned the hard drive and am
running this as a separate operating system. (I have to make a choice as to
which operating system I want every time I turn on my computer). When
following the guide to install the software, I have GNU Radio 3.10.1.1
(Python 3.10.6) listed in the About section of the program. I know these
aren't the versions listed in the instructions but I did everything as
written and this is what downloaded.
Tom - I am running 22.04, that is what downloaded through the instructions
on the DSPIRA page. How would I go about getting the earlier version of the
platform?
Thanks again for all of the help! I am a complete novice when it comes to
this but am always willing to learn new things to provide new/fun
experiences for my students.
Kenric
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Hi Tom and Pranav, I was able to get things up and running by switching over to the Ubuntu 20.04 version. Everything outlined in the instructions worked well and I was able to start the program and see a graph. I am now having issues with actually collecting data. It doesn't seem like I am actually receiving anything from the telescope. This might be better posted in one of the other forums (probably the electronics forum). Thanks for the help! Kenric |
|
Happy to see you got this running, Kenric! Did you perform the hot/cold calibration? I wasn't receiving a recognizable signal until I calibrated the setup. Tom |
|
No, I think I am still having difficulty with getting a signal to the computer because I'm not seeing any sort of change in the graph when I am moving the scope around the sky (or even at the ground). I am about to update my post on the electronics forum because someone over there was also helping me with the settings. |
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Hello, I use the print to graph link function on the spectrometer but when I do that the Y-axis label and units do not change when I view the saved graph file . Also when I print to graph the plot line showing in the saved file does not seem to be what is showing on the spectrometer. Do I have to change the code in GNU radio? Please give guidance. Thank You, Vic |
GNURadio Forum – Digital Signal Processing in Radio Astronomy - Lessons Portal
Lots of lessons
https://wvurail.org//dspira-lessons/forum/gnuradio/
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