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Re: Build timestamp as proxy for FW build version
We could do with better documentation on this device eg the wiki. If
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features/behaviours are different between builds they'll need documenting and users will need to know which version they have to understand the documentation fully. In addition users will be better informed if newer, hopefully improved, builds become available. Mike On Sun, 28 Jul 2019, 18:43 Dave Daniel, <kc0wjn@...> wrote:
I should have asked what is the problem for which a solution is being |
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Re: Build timestamp as proxy for FW build version
I should have asked what is the problem for which a solution is being sought?
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DaveD Sent from a small flat thingy On Jul 28, 2019, at 13:01, Mike Brown <mbmail@...> wrote: |
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Re: Build timestamp as proxy for FW build version
Well, build timestamp and the file set used in the build are not necessaily correlated. One could build the code repeatedly using the same files; each build will have a different timestamp. It is more or less true, though, that it would be difficult to create two builds with different file sets that have exactly the same timestamp.
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Version control is really the only method that works reliably. Many, many engineers have westled with the question of how to provide SCM for many decades. So far, we are still using SCM tools to manage version control. DaveD Sent from a small flat thingy On Jul 28, 2019, at 13:01, Mike Brown <mbmail@...> wrote: |
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Build timestamp as proxy for FW build version
Apologies if this has already been suggested but pressing the FW info
button in NanoVNA 1.03 returns information on the Nano's firmware, including build 'time'. Might the build timestamp be usable as a way to tell the different versions apart? As a starter, my NanoVNA is a 2-trace 900MHz antenna analyser with build time May 5 2019 - 08:35:00. Best regards Mike ---------- Forwarded message --------- From: Michael Brown <mike.g4raa@...> Date: Sun, 28 Jul 2019, 17:53 Subject: NanoVNA FW info 2-trace 900MHz Antenna Analyser To: mbmail@... <mbmail@...> Attached Sent from Mail <> for Windows 10 |
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Diles, Folders and Wikis on the nanovna group
All,
I have enabled files, photos and wikis for this group. You should be able to upload files and photos and create wikis now. Please, please, create subfolders when you upload files or photos. For single files or photos which do not warrant their own subfolder, I have created subfolders named "Miscellaneous". The Photos folder contains 110 photos which are those attached to previous posts (groups,io did this automatically). If anyone has questions about these, or discovers a problem, please let me know. DaveD |
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Re: Suggestion to have a wiki
Since groups.io has a built in wiki: using that one seems like a path of
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least resistance... The list owner just has to enable it. Neil On Sat, Jul 27, 2019, 18:14 Dave Daniel <kc0wjn@...> wrote:
Ok, with what do you agree? It¡¯s not clear from your post whether you |
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Re: LabView Interface
Joe Smith
I now have both channels sorted out.? Took a little time away from the project? to have a fresh look.?? I've posted a couple of updated pictures.?? There still some work to do but the basics are working now.?
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"www.eevblog.com/forum/rf-microwave/nanovna-custom-software/new/#new" NanoVNA Custom Software - Page 1 | | | | NanoVNA Custom Software - Page 1 NanoVNA Custom Software - Page 1 | | | On Friday, July 26, 2019, 12:08:06 PM CDT, Joe Smith via Groups.Io <joeqsmith49@...> wrote:
I started to look at the "data 1" array to implement S21.?? So far, no luck.? Like the "data 0" array, it appears to send two different arrays that are interlaced.? ? One thing I did run into when I first tried it, the communications was not reliable. ? It seems that sending the two commands "data 0 data 1" too quickly can cause the VNA some distress.? Adding some delay between commands appears to have solved it. ?? ? On Wednesday, July 24, 2019, 4:15:55 PM EDT, Joe Smith via Groups.Io <joeqsmith49@...> wrote: ? Thanks for taking the time to dig up all those links.??? The first link uses the included Smith chart.? This is what I show in my screen shot.?? This works but I really want some basic features like cursors.??? The others appear to use the same method I have done in the past, basically overlaying graphics on an X-Y.?? This is the direction I am planning once again as looking at NI's site, it appears they have nothing new to offer.?? ? On Wednesday, July 24, 2019, 3:38:11 PM EDT, Larry Rothman <ac293@...> wrote: Would this help? An Old Friend in New Clothes:Smith Charts in LabVIEW ? Proceedings of the 2013 ASEE North Central Section Conference ? Copyright ? 2013, American Society for Engineering Education OFNC1 ? ? There are also: ? ? ? ? ? I hope these help you and others. Cheers, Larry |
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Re: Case for black VNA
I just looks at the 2 units I have (A black one from Alan). The SMA spacing is the same, the the biggest difference on the SMA end, is the spacer size. This makes the cases different
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On 7/27/2019 4:48 AM, Mike Brown wrote:
Just got my calipers out in case a few measurements would be helpful. My |
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Re: Suggestion to have a wiki
Ok, with what do you agree? It¡¯s not clear from your post whether you think we need a wiki or not.
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Just to be clear, I don¡¯t have a problrm with having a wiki. But someone will have to create it and administer it. That will probably be time intensive. DaveD Sent from a small flat thingy On Jul 27, 2019, at 20:43, Jeremy Dunman W1BO <jeremy@...> wrote: |
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Re: Suggestion to have a wiki
TOTALLY agree! Going back through message after message is difficult at
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best. Case in point today working on my antenna and went to pull the VNAsharp down for my lap top and spent probably 30 minutes searching for the location of the file. Jeremy Dunman W1BO ------ Original Message ------
From: "Dave Daniel" <kc0wjn@...> To: [email protected] Sent: 7/27/2019 8:21:57 PM Subject: Re: [nanovna-users] Suggestion to have a wiki Yes. |
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Re: Suggestion to have a wiki
Yes.
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Typically, this is what SCM (Source Control Management) is all about. A wiki is usually not the first tool of choice for providing SCM, though (I've used a bunch of them over the years for both hardware and software design files). The wiki could be used to *document* the contents of the SCM repository, but then there is the problem of keeping the repository and the wiki in sync, and if they are out of sync, the purpose of the wiki is obviated (the repository is what it is, good, bad or indifferent; if the contents are "broken", then the product is probably broken, but the code in the repository can be "fixed"). So, my thoughts on using a wiki to provide documentation for what is where and what is what for the nanoVNA stuff are mixed. Is something that is out of sync better than nothing? How would one know that they are out of sync? What would be the consequences of relying on information that is out of sync? Do we care? I'd have to cogitate on that a bit. DaveD On 7/27/2019 7:50 PM, Dave Daniel via Groups.Io wrote:
David, |
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"Clones"
Has anyone determined if there is more than 2 PCBA for these units? I see there is a USB Micro B (which I have) and the USB C,?? on the black (which I have seen advertised on some white units also). I Know the SMA spacing between the 2 units I have played with , and the power switch is also different
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Re: Suggestion to have a wiki
I think the biggest thing is since there seems to be a bunch of "different" variations, there would be one source to determine which one you have (bad, semi bad etc)
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It would also help with the different FW and the function they provide Frank On 7/27/2019 7:50 PM, Dave Daniel wrote:
David, |
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Re: Suggestion to have a wiki
David,
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Why does the nanoVNA group need one more than most other groups? I have administered Wikis in the past. The one that I like the most is MediaWiki. MediaWiki is the one used for the TekWiki (w140.com) wiki. Maintaining a wiki, particularly one edited by a group of people, can be challenging. DaveD On 7/27/2019 1:26 PM, Dr. David Kirkby from Kirkby Microwave Ltd wrote:
groups.io supports the creation of wikis. I think it would be useful to |
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Re: nano cases
I use connector savers and do not screw DUTs onto the SMA's which are mounted on the PCB. After awhile the connector savers go tainted and I replace them. The SMA on the units stay pretty clean.
Now I do not use a torque wrench to tighten elements. I agree, if that were the case, I suspect those SMA connectors are eventually going to become intermittent or get ripped off the PCB. If you really want a more robust arrangement, then I agree go the type N route via a short interconnect cable and place into a robust box. Alan ________________________________ From: [email protected] <[email protected]> on behalf of Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...> Sent: Saturday, July 27, 2019 10:08 PM To: [email protected] <[email protected]> Subject: Re: [nanovna-users] nano cases On Sat, 27 Jul 2019 at 22:07, Frank S <ka2fwc@...> wrote: Here are pictures of the black and the white cases. The original frontI can¡¯t help but feel that the case should ensure that the DUT is not connected to the SMA connectors. -- Dr. David Kirkby, |
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Re: nano cases
Dr. David Kirkby from Kirkby Microwave Ltd
On Sat, 27 Jul 2019 at 22:07, Frank S <ka2fwc@...> wrote:
Here are pictures of the black and the white cases. The original frontI can¡¯t help but feel that the case should ensure that the DUT is not connected to the SMA connectors. -- Dr. David Kirkby, |
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Re: Frequency correction
Dr. David Kirkby from Kirkby Microwave Ltd
On Sat, 27 Jul 2019 at 22:14, alan victor <avictor73@...> wrote:
According to the schematic it is 26 MHz. And the diagram shows NO freq If anyone does want to go mad, an OCXO is going to be the best that¡¯s practical. I suspect that there are some cheap ones, but the first I found was from Farnel, but its nearly 4x the cost of the NanoVNA But the fact 26 MHz is available as a standard part, might mean there are others. But OCXOs use a fair bit of power. As I wrote earlier though. I don¡¯t see frequency accuracy as a big deal on a VNA, but someone mentioned using it as a signal generator, where one is likely to be more concerned about frequency accuracy. I have my VNAs locked to GPS, simply because I have a distribution unit with enough outputs to do so. It is hardly necessary. Dave -- Dr. David Kirkby, |
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