Where can I find the latest STM upgrade SW download for a NanoVNA-H4
There have been many upgrade suggestions for the correct software to use when upgrading the NanoVNA-H4 and the instructions on how to use that code. I have not found anything that is supposed to be golden for the H4. It has all been see if this or that works. I would like to use the STM software. Is there a package there that is not a demo but the real thing and then I need the latest DFU file.
Thanks
N4CLA - Fred
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NanoVNA 4 version 1.0.? Only save at 800Hz
NanoVNA 4 version 1.0.?
I had all slots filled with band segments mainly SSB 5.3305 - 29.7MHz, 3.8 - 4MHz, 7.175 - 7.3MHz, etc. I decided to verify the calibration, I set the stimulation to 7.025 - 7.3MHz for both CW and SSB, then performed the calibration and the slot now shows cw 800Hz - 800Hz. What have I done wrong?
Thank you, 73,
John W7OTD
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Re: Bogus Request for Link Change
Never do free advertising for any commercial clone manufacturer. I benefits nobody except them.
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I've been using a 4GB one in my H4, about 10y old. A cheap Kingston. Works fine, no problems yet.
The issues with modern cards I gathered from different projects:
1. the new fast cards 8GB+ are much more power hungry, and need a good stable voltage and well made decoupling at Vcc against GND, a capacitor soldered close to its socket (like 10-22uF ceramic multilayer smd one for 25V)
2. some may not support SPI (I heaven't see any yet)
3. ALL sdcards have got so called "write latency", WL with modern cards is up to 250ms (!!) long. WL means the card does not respond as it provides its internal "house keeping" - like wear-leveling, etc. The WL is a random process, not predictable, and it is always there, usually 5-10ms long in average, but sometimes much longer, and quite frequent. Applications which needs to write a certain amount of data without be interrupted during the write needs a FIFO to overcome the sdcard's WL.
4. modern bigger and faster cards have more options for speed and type (ie voltage levels) of the interface - needs to be maintained within the code properly
5. Timeouts - some cards need more retries or longer timeouts when you requesting something out of them..
HTH
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Tim,
the NanoVNA does not require a large SD card (less than 8GB is the appropriate size), but the production quality is not negligible.
NanoVNA uses STM32F303, which recognizes the SD card in FAT32 format.
Use 'SD Card Formatter' for formatting.
Unfortunately, there are too many manufacturers trying in the market and our users run into the mistake of getting the latest from the best.
Because that's what computer merchants have in store for us.
--
Gyula HA3HZ ( )
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Mike,
The error message means, as Hugen wrote, that you need to update the NanoVNA firmware because the software you were using did not recognize the command. So the firmware has not been updated for you, but the software is waiting for new commands.
Updating the firmware will probably resolve your issue.
--
Gyula HA3HZ ( )
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I was using NanoVNA-Saver to try to use the VNA on my computer. I have since learned that it is probably less hassle to just use the NanoVNA. Thanks for the response and I have a very bad habit of asking questions without putting enough info in. Will try to do better. Sent from Mail ( ) for Windows *From:* VE3WNA John ( john.verne@... ) *Sent:* Thursday, June 16, 2022 7:43 PM *To:* [email protected]*Subject:* Re: [nanovna-users] Nanovna H4 #nanovna-h4 On Thu, Jun 16, 2022 at 03:08 PM, Mike McKinney wrote: first time trying to use the nanovna H4. Not sure how to correct this error. Any help would be greatly appreciated. You should tell us what you were doing at the time, and how. This looks like you were connecting with some desktop software, probably over USB, but we are guessing.
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Re: NanoVNA for RFID design
I have about 100 used CGM I've absconded from my wife's bi-weekly usage (diabetic). TI has all sorts of info on line free for the downloading. See the pic attached for a sample. I can give out several just for the asking, except for the cell (Post Office is funny about that stuff) I've also attached the TI pdf. Have fun.
Mike C.
(Sand Mtn, GA)
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On 6/15/2022 3:50 PM, Chuck, KF0CT wrote: Thank you
________________________________
From:[email protected] <[email protected]> on behalf of Jim Lux<jim@...>
Sent: Wednesday, June 15, 2022 6:45 PM
To:[email protected] <[email protected]>
Subject: Re: [nanovna-users] NanoVNA for RFID design
On 6/15/22 9:39 AM, Chuck, KF0CT wrote:
But why would anyone want an RFID reader that can read cards over 10" away except to read someone's Credit card or Debit card without the person knowing about it... then you just watch them type in their pin number and you have complete access to their credit/debit card....
____________________ A good use case is where you use the badge to authenticate into a
computer (using an actual contact badge reader that uses the
cryptographic chip in the badge), but then just need to make sure that
the user is in the vicinity. If you require the badge to be resident in
the computer, it makes it hard to use multiple computers at the same time.
A typical PIV-II credential has both an RFID (which returns only the
serial number of the badge) and an actual chip (like in a credit card).
ISO14443A/B ISO ISO15693 are two of the specs
ISO/IEC 15693 systems operate at the 13.56 MHzfrequency
<>, and offer maximum read
distance of 1¨C1.5 meters
They do both ASK and FSK.
As far as NanoVNAs go, it's a useful tool to develop and test these kind
of systems - 13.56 MHz is easily choked with ferrites to remove the
cables and instrument from interacting with the system. So you can set
up a test card (which has the antenna, but a SMA or MMCX connector on
it) and a test reader (just the antenna, with connector). And this is
at a frequency for which the NanoVNA is perfect. You can easily set up
a scripted environment, have a user wearing the badge on a neck lanyard
and move around while logging S21.
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Hi,
This is a true case of one market segment impinging on another.
For years,there has been a market push for faster SD cards with higher capacities for cameras or phones, for example.
Many microSD/TF card users do not need even 8 Gb of storage (single board computers, firmware upgrades) and these devices sometimes cannot support the faster, higher density card.
In general, most cards never get used to high capacity or reach R/W failure. As such, I generally purchase 8/16 Gb cards at the low end of the price range and always keep 8 to 10 new ones in a drawer for immediate use.
(Some Chinese sources are now providing Terabyte cards¡)
Larry
AC9OX
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On Thu, Jun 16, 2022 at 03:08 PM, Mike McKinney wrote:
first time trying to use the nanovna H4. Not sure how to correct this error.
Any help would be greatly appreciated.
You should tell us what you were doing at the time, and how. This looks like you were connecting with some desktop software, probably over USB, but we are guessing.
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Re: Bogus Request for Link Change
On Thu, Jun 16, 2022 at 03:08 PM, Russ Woodman wrote:
I'm assuming this is bogus but could someone confirm the legitimate site for
NanoVNA?
From edelswartz123@...:
Hi, I just noticed the "NanoVNA" link on your page:
points to an unofficial website (nanovna.com) that has been selling bad
clones, so would you mind pointing it to our new website
() (I am a developer there) instead?
I received a similar email about a blog entry I made about the H4 I picked up. I updated the link to refer to the place I purchased it, rather than nanovna.com, but I'm not sure if that was even warranted. No doubt there has been a lot of history related to the somewhat, sorta, open source hardware and so-called "clones", but that cat is out of the bag now. The real challenge for folks is knowing what the are buying to some extent. The whole NanoVNA market is a huge caveat emptor, though I think if you choose to buy from one of usual suspects and stay away from websites that start with the letter "a" you might be ok. That might not satisfy "edelswartz" though.
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Please update the firmware of your nanovna.
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Re: Bogus Request for Link Change
In fact nanorfe violates the GPL license and publishes a lot of false information, please remember that nanovna.com is the only legitimate website.
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Re: Bogus Request for Link Change
Andreja,
Thanks for the info. Seems like it might be useful to link to both of them.
Russ, K5TUX
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On Jun 16, 2022, at 2:43 PM, Andreja YU1NKA/DM1NKA <andrejakostic@...> wrote:
?Well, the short story is that it's not as bogus as it seems, but it also
gets really messy really quickly.
Basically, there was the "original" version of the NanoVNA by Edy55 , and
after some time, a Chinese version appeared. Apparently, there was some
work done by Hugen and by OwO on the Chinese version. The Chinese version
became popular,m spread around Chinese e-commerce websites, and then "fake"
Chinese versions appeared as well. Then, work on improved versions started,
and there was quite a bit of drama between Hugen and OwO about who stole
what, and dumping prices and so on. I, personally, do not know the exact
details, and can't say who is right and who is wrong.
What happened afterwards, is that there's a whole bunch of "NanoVNA"
devices, and the term became a bit diluted, so if someone is trying to buy
a "regular" NanoVNA, it's very difficult to identify what the device
actually does.
Then, there's a new generation of "improved" devices, like the Hugen's
NanoVNA-H and the OwO's NanoVNA V2, and there's even a NanoVNA-F and so on.
Now, the site you link to sells what appears to be NanoVNA-H, while the
is the site for the NanoVNA V2.
All the best,
Andreja YU1NKA/DM1NKA
§é§Ö§ä, 16. ?§å§ß 2022. §å 21:08 Russ Woodman <k5tux@...> ?§Ö §ß§Ñ§á§Ú§ã§Ñ§à/§Ý§Ñ:
I'm assuming this is bogus but could someone confirm the legitimate site
for NanoVNA?
From edelswartz123@...:
Hi, I just noticed the "NanoVNA" link on your page:
points to an unofficial website (nanovna.com) that has been selling bad
clones, so would you mind pointing it to our new website
() (I am a developer there) instead?
Thanks!
-- 8< --
Thanks,
Russ - K5TUX
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Re: Bogus Request for Link Change
Well, the short story is that it's not as bogus as it seems, but it also
gets really messy really quickly.
Basically, there was the "original" version of the NanoVNA by Edy55 , and
after some time, a Chinese version appeared. Apparently, there was some
work done by Hugen and by OwO on the Chinese version. The Chinese version
became popular,m spread around Chinese e-commerce websites, and then "fake"
Chinese versions appeared as well. Then, work on improved versions started,
and there was quite a bit of drama between Hugen and OwO about who stole
what, and dumping prices and so on. I, personally, do not know the exact
details, and can't say who is right and who is wrong.
What happened afterwards, is that there's a whole bunch of "NanoVNA"
devices, and the term became a bit diluted, so if someone is trying to buy
a "regular" NanoVNA, it's very difficult to identify what the device
actually does.
Then, there's a new generation of "improved" devices, like the Hugen's
NanoVNA-H and the OwO's NanoVNA V2, and there's even a NanoVNA-F and so on.
Now, the site you link to sells what appears to be NanoVNA-H, while the
is the site for the NanoVNA V2.
All the best,
Andreja YU1NKA/DM1NKA
§é§Ö§ä, 16. ?§å§ß 2022. §å 21:08 Russ Woodman <k5tux@...> ?§Ö §ß§Ñ§á§Ú§ã§Ñ§à/§Ý§Ñ:
toggle quoted message
Show quoted text
I'm assuming this is bogus but could someone confirm the legitimate site
for NanoVNA?
From edelswartz123@...:
Hi, I just noticed the "NanoVNA" link on your page:
points to an unofficial website (nanovna.com) that has been selling bad
clones, so would you mind pointing it to our new website
() (I am a developer there) instead?
Thanks!
-- 8< --
Thanks,
Russ - K5TUX
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Tim, please search this forum for "SD card". You will find many users have
had the same issue, with many responses given. The bottom line is that not
all SD cards are compatible with the nanovna, and there is not an easy way
to know which ones are and are not. The card needs to support the SPI
mode. Many newer, faster cards do not; many slower cards do.
I have found that the Patriot cards labeled with class 10, HC, I, and U1
work; mine are 16GB. Other users have found others that work.
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On Thu, Jun 16, 2022, 12:08 PM VE3VTH <ve3vth@...> wrote: Hello I have installed a micro sd card in my NanoVNA-H 4 and when I try to
save a screenshot, I get a message: fail write. This is a new 32gb sd card
and it shows as fat 32 when I read it in Windows 10.
I would appreciate any help to get the card to save data. 73 Tim VE3VTH
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Hello I have installed a micro sd card in my NanoVNA-H 4 and when I try to save a screenshot, I get a message: fail write. This is a new 32gb sd card and it shows as fat 32 when I read it in Windows 10.
I would appreciate any help to get the card to save data. 73 Tim VE3VTH
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first time trying to use the nanovna H4. Not sure how to correct this error. Any help would be greatly appreciated.
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Bogus Request for Link Change
I'm assuming this is bogus but could someone confirm the legitimate site for NanoVNA?
From edelswartz123@...:
Hi, I just noticed the "NanoVNA" link on your page:
points to an unofficial website (nanovna.com) that has been selling bad clones, so would you mind pointing it to our new website
() (I am a developer there) instead? Thanks!
-- 8< --
Thanks,
Russ - K5TUX
|
Re: NanoVNA for RFID design
Hello tjackson382000.
10 inches is a stretch for ISO15693, but out of the question for ISO14443. I like the Feig CPR74, which puts out 250 mW. It's a module with onboard antenna and a u.fl for off-board. Feig also has higher power (and higher priced) external antenna HF readers that will make your 10 inch distance a lot more doable. Their 100x100 mm antenna works great.
I have built 24 inch across conveyor systems with Feig's older readers that put out only 100 mW, so your requirement is not a pipe dream. Your should try to physically match the sizes of the reader and tag antennas, so your 3 inch tag would talk best with a reader antenna of 2 to 4 inches or so. With a bigger antenna, your tag might only read at the corners.
I am not aware of NanoVNA computing a Q value for you. If it did, you would still have to question whether their method matched that of the appnote. I would concentrate on computing Q per the appnote's methodology, given the profile of the Channel 0 LOGMAG curve, which is yellow by default.
One fun trick I "invented" is to connect a nonresonant loop to port 0, about the same size as my tag. LOGMAG 0 should be flat across the stimulus range. Now put your tag on there. You will see the tag's resonant frequency and get a relative indication of its Q, which lets you compare tags to see which are stronger.
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HA3HZ
Mike McKinney
Mike C.
Larry McElhiney
Russ Woodman
