search

WVURAIL / dspira-lessons

Digital Signal Processing in Radio Astronomy - Lessons Portal
http://wvurail.org/dspira-lessons/
MIT License
6 stars 3 forks source link

Welcome to dspira-lessons Discussions! #9

Open TomMHO opened 2 years ago

TomMHO commented 2 years ago

Discussed in https://github.com/WVURAIL/dspira-lessons/discussions/6

Originally posted by **PranavSanghavi** December 17, 2020 ## 👋 Welcome! We’re using Discussions as a place to connect with other members of our community. We hope that you: * Ask questions you’re wondering about. * Share ideas. * Engage with other community members. * Welcome others and are open-minded. Remember that this is a community we build together 💪. To get started, comment below with an introduction of yourself and tell us about what you do with this community.
TomMHO commented 2 years ago

Hello Everybody,

I really appreciate the outstanding efforts of DSPIRA in making this project available to hobbyists like me. I've built both the small and large horns and they both work very well.

However, I did have a problem when I downloaded the ubuntu_radio_astro2021.zip iso image and flashed it to a 32 GB USB stick. Ubuntu tried to start, but the desktop never opened. I tried it again with a 64 GB stick and it works fine. Anybody else notice this?

Thanks again, Tom Hagen Rochester MI

kbandura commented 2 years ago

All USB sticks are not created equal. You may have luck just flashing the 32 again as well.

TomMHO commented 2 years ago

The 32G is an old stick, and I just purchased the 64G, so that could be the problem. And I did try flashing the 32G stick twice to no avail. :-)

Thanks, Tom

glangsto commented 2 years ago

Hi

There are some troubles with using devices bigger than 32GB. I’m not sure if that is the use or not, though.

Alternatively this link and installation guide have been successfully used by several teachers.

https://drive.google.com/file/d/1ZimSdkMnhlHTJFUAVnjuZ4X0ezROjXwY/view?usp=sharing

The installation guide is here:

https://docs.google.com/document/d/1PfLD4Qs_Lqaym5gc8UixnePTN2Mfi6LW_h2DaOnnrT0/edit?usp=sharing

Glen

Glen I Langston, Ph. D. Galactic Astronomy Program Director National Science Foundation 304-456-3032

On Nov 4, 2021, at 12:12 PM, TomMHO @.***> 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.

The 32G is an old stick, and I just purchased the 64G, so that could be the problem. And I did try flashing the 32G stick twice to no avail. :-)

Thanks, Tom

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android.

TomMHO commented 2 years ago

Thanks all, for the help.

I did a little more investigation and I found out that the original 32 GB USB stick I used has very slow read/write speeds of 5/5 MB/s. I purchased a new Samsung 32 GB stick (advertised at 200 MB/s read speed) and the read/write speed was measured at 211/26 MB/s. I flashed the spectrometer image onto this drive and it runs great! (I'm using a USB speed check utility I found online to check speeds.)

So it looks to me like the USB R/W speed is the important factor and I will use the fastest stick I can get to run the spectrometer.

Tom Hagen

rbaker314 commented 2 years ago

Hi Tom,

What is the name of the USB speed check utility?

Thanks,

Robert Baker

On Sun, Nov 7, 2021 at 11:31 AM TomMHO @.***> wrote:

Thanks all, for the help.

I did a little more investigation and I found out that the original 32 GB USB stick I used has very slow read/write speeds of 5/5 MB/s. I purchased a new Samsung 32 GB stick (advertised at 200 MB/s read speed) and the read/write speed was measured at 211/26 MB/s. I flashed the spectrometer image onto this drive and it runs great! (I'm using a USB speed check utility I found online to check speeds.)

So it looks to me like the USB R/W speed is the important factor and I will use the fastest stick I can get to run the spectrometer.

Tom Hagen

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/WVURAIL/dspira-lessons/issues/9#issuecomment-962659387, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABZERAIA2BUJHCZ6YZWMY6DUK3AYRANCNFSM5HLOD73Q . Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

TomMHO commented 2 years ago

Hi Robert: It's USB Flash Benchmark, https://www.majorgeeks.com/files/details/usb_flash_benchmark.html

I'm always leery about downloading these "no-name" executables, but I don't think I got any viruses or trojans from this one!

I saw some online tests too, maybe you could try one and let us know how it went?

Tom

glangsto commented 2 years ago

Glen I Langston, Ph. D. Galactic Astronomy Program Director National Science Foundation 304-456-3032

On Nov 7, 2021, at 3:23 PM, rbaker314 @.***> 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.

Hi Tom,

What is the name of the USB speed check utility?

Thanks,

Robert Baker

On Sun, Nov 7, 2021 at 11:31 AM TomMHO @.***> wrote:

Thanks all, for the help.

I did a little more investigation and I found out that the original 32 GB USB stick I used has very slow read/write speeds of 5/5 MB/s. I purchased a new Samsung 32 GB stick (advertised at 200 MB/s read speed) and the read/write speed was measured at 211/26 MB/s. I flashed the spectrometer image onto this drive and it runs great! (I'm using a USB speed check utility I found online to check speeds.)

So it looks to me like the USB R/W speed is the important factor and I will use the fastest stick I can get to run the spectrometer.

Tom Hagen

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/WVURAIL/dspira-lessons/issues/9#issuecomment-962659387, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABZERAIA2BUJHCZ6YZWMY6DUK3AYRANCNFSM5HLOD73Q . Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub, or unsubscribe. Triage notifications on the go with GitHub Mobile for iOS or Android.