开云体育

I've already started hacking my unit so I can push F/W, add a battery, etc.
I've attached several photos. If you're into Amateur Radio, you can probably obtain some old scrap Motorola HT1250 portables.
They can supply shields for the front-end as well as a button for P2 (to put the unit into DFU mode)
To place the unit in DFU (Programming mode) you only need to short P2 when applying power - so I installed a push button - push button/apply power/release button - works great.
The radio shields (there are two on every HT1250 that will fit) need to be slightly trimmed where there is a surface trace to prevent shorts and impedance issues.
Finally, for your question regarding interfacing to the PC, I've successfully installed the serial driver and the DFU driver and have pushed new firmware to the device.

Cheers,
Larry

Larry,
I can understand the airline battery conflicts definitely as I fly with Radios from time to time. If it were just the battery that were missing maybe but that is not all that doesn't work and the QC is terrible, not kidding the solder flux had not been cleaned off what had been soldered.
At a hardware level it looks like a STM32 and a TLV320 are present, so connect a USB and you should at least see the USB idVendor and idProduct codes on the USB bus? As the docs all seem to suggest there is a boot loader present. I'll confirm later.

AFAIK an STlink V2, or similar, should tell you what had been loaded on the STM32 MCU. Assuming he ICSP headers existed. As the screen says 50Kz to 900MHz I assume the appropriate firmware was loaded. Not sure an SA602 can handle 900MHz anyway.Bit loath right now to tinker until I can work out is the unit going to work at all.

72
DomM1KTA

Dom,
There are VERY strict guidelines as to what types of equipment can include Lithium batteries if being shipped by air.
Many Asian vendors have been burned by having their shipments returned due to being refused air shipment due to the inclusion of Li batteries.
So, they have started to ship their products without them.
I for one am happy to get my items faster, even if they don't include the batteries.
I can buy the Li batteries locally and it ensures I'm getting new cells, not old stock that may fail in 6 months.

Regards,
Larry

On Monday, 24 June 2019, 17:40:18 GMT+1, Dom Baines M1KTA via Groups.Io <dombaines@...> wrote:

No battery and lots of 'other bits' seem missing.

These are all from a white clone I RX from ebay (wishyou-happy) with the gecko on the front.Cost was $46.99 (probably c$55)

The biggest issues so far seem to be that there are no ICSP headers, no SD card and no battery. Not quite sure how this was even tested.
It says 50kz to 900MHz but with that front end no idea how that is even possible. 300MHz looks more likely.

I'll post the usb readout from a Linux system later if it recognises the hardware etc it does appear to do the charge thing (blue and red led) but with no battery that is a bit moot. The ebay auction did say no battery. Original should be a 150mA LiLoN battery.

I cannot get any PC software to connect to it.
72
DomM1KTA

Dom,
Can you be more specific?
What's missing from the Gecko version and how is it a "very bad clone"?
What are the hardware and/or software differences?

It would be great if someone could create comparison list/table for everyone on this group so we can see the differences between the various versions.

If someone that owns a battery powered unit, could you please post a photo of the unit with the back cover removed so those of us with the non-battery version can see what's different as well.

Thanks,
Larry

No battery and lots of 'other bits' seem missing.

Have you included or documented all the additional changes anywhere? Is the source code available for the additions?

72

Dom
M1KTA

I found that the white version with a gecko on it was a very bad clone.

I would agree. As I have one and there is lots missing :-)
72
DomM1KTA

I remade NanoVNA based on edy555 (), but modified
some circuits, added battery management circuits, and redesigned the PCB.
I developed a PC control software can export Touchstone (snp) files which can be used for
various radio design and simulation software.The improved frequency algorithm
can use the odd harmonic extension of si5351 to support the measurement
frequency up to 900MHz.
I sell at cost price in the online store .
Because it's open source hardware, I also shared my circuit diagram,it was soon cloned.
I found that the white version with a gecko on it was a very bad clone.

I was able to get v 1.02 working yesterday I did have a couple of hiccups, but go tit working.
Thanks for you help. Not being a SW person, I'm lost if it doesn't work .
I'm really impressed with the little guy.?? I have use much more expensive equipment, and this is good for ham work. I owned an HP VNA, but sold it

Fixed the bug that nanovnasharp cannot work properly under a system such as French use "," to separate decimals.

What SW, and what bug?
Frank

I've updated the software and fixed this bug.

Last week I ordered a NanoVNA on ebay from a seller in Hong Kong. Ebay later sent me a message stating that they had dropped the seller (idesheng999) and saying "This user is no longer registered on eBay".
Hopefully it will arrive; if not, ebay will refund my payment, but it certainly will delay my getting a hold of the VNA. Does anyone have any thoughts or experience with this seller or this situation?
Stuart K6YAZLos Angles, California USA

In any case, don't worry. Just make sure you include pictures of the package that came (showing all details)
and the content of it if or when you need to file a claim. In my experience eBay is more on your (buyer) side than the seller
I have had this same issue a number of times...the last time was with a GPIB-USB adapter where the seller
sent me a spark plug instead with the tracking number and everything...of course I got my money back very quickly from ebay



On Sun, Jun 23, 2019 at 01:47 PM, Glenn Little wrote:

On 2 June I bought a NanoVNA on EBay.
On 19 June I receive a small parcel with a blue tassel in it.
The tracking number on the parcel was the same as listed for the NanoVNA.
Now EBay thinks that the VNA has been delivered.
I contacted the seller and he stated the the VNA was to be shipped when
it arrived to him from the manufacture and that he was tracking it.
The seller is topcyberday and has a 98.9% positive feedback with 1840
transactions.
My concern is that EBay will think that the VNA has been delivered and
that I will have no recourse if I do not receive the VNA.

Anyone with experience with this seller?

Thanks

Glenn


--
-----------------------------------------------------------------------
Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"

in any

Ii had a similar experience with the eBay seller pincei-de. See my previous email.?But in my case the letter which accompanied the gift stated anohte rtracking number and carrier.A few days alter i got my nano vna.So far so good, battery included, cal kit included, but the load of the cal kit is a reverse connector i.e. female insgtaead of male.
Hennikng WeddigDK5LV


-----Ursprüngliche Mitteilung-----
Von: Glenn Little <glennmaillist@...>
An: nanovna-users <[email protected]>
Verschickt: So, 23. Jun. 2019 19:47
Betreff: [nanovna-users] Free gift with NanoVNA

On 2 June I bought a NanoVNA on EBay.
On 19 June I receive a small parcel with a blue tassel in it.
The tracking number on the parcel was the same as listed for the NanoVNA.
Now EBay thinks that the VNA has been delivered.
I contacted the seller and he stated the the VNA was to be shipped when
it arrived to him from the manufacture and that he was tracking it.
The seller is topcyberday and has a 98.9% positive feedback with 1840
transactions.
My concern is that EBay will think that the VNA has been delivered and
that I will have no recourse if I do not receive the VNA.

Anyone with experience with this seller?

Thanks

Glenn


--
-----------------------------------------------------------------------
Glenn Little? ? ? ? ? ? ? ? ARRL Technical Specialist? QCWA? LM 28417
Amateur Callsign:? WB4UIV? ? ? ? ? ? wb4uiv@...? ? AMSAT LM 2178
QTH:? Goose Creek, SC USA (EM92xx)? USSVI LM? NRA LM? SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"

On 2 June I bought a NanoVNA on EBay.
On 19 June I receive a small parcel with a blue tassel in it.
The tracking number on the parcel was the same as listed for the NanoVNA.
Now EBay thinks that the VNA has been delivered.
I contacted the seller and he stated the the VNA was to be shipped when it arrived to him from the manufacture and that he was tracking it.
The seller is topcyberday and has a 98.9% positive feedback with 1840 transactions.
My concern is that EBay will think that the VNA has been delivered and that I will have no recourse if I do not receive the VNA.

Anyone with experience with this seller?

Thanks

Glenn


--
-----------------------------------------------------------------------
Glenn Little ARRL Technical Specialist QCWA LM 28417
Amateur Callsign: WB4UIV wb4uiv@... AMSAT LM 2178
QTH: Goose Creek, SC USA (EM92xx) USSVI LM NRA LM SBE ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"

Hi All,
I still waiting for my nanoVNA but I found this cal procedure maybe You can follow?Computer & RF Technology
btw have any one try to contact the real author of NanoVNA and tell him about this Geoup ?
maybe he can join the discussion.
Thamk YouAnton


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Pada Minggu, 23 Juni 2019 03.34.26 WIB, Larry Rothman <ac293@...> menulis:

I got the white unit, as you described.

Did yours come with a battery?
I'd like to connect a battery to it but I'm wondering what might mounted on the pads just to the lower right of the battery pads, below the coil.

Also, does anyone know what P1 is for? Is that what needs to be shorted to place the unit into DFU mode for flashing?

Speaking of which, has anyone attempted to reflash the unit yet?

Cheers,
Larry

This is the resource we have been looking for:


It has firmware updates, instructions how to update, manuals etc.

If someone has created a s2p file from within nanoVNA software, please send it to me (pm) or as attachment, so I can try to load it. Then I can see if the problem is related to Windows or my s2p files.