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Too many things don't work as they probably should so returning mine. I expect I might just have an odd unit?

I will tinker with code based on the original github though as this has also got me into hacking STM32 code and looking at the various MCU.
Maybe look at those front ends as well.

72
Dom
M1KTA

I had the same from panda201898 but it turned up a couple of days later ... very disconcerting though

Hi all :) On good news I have NanoVNASharp running under Linux ... bit of a play and got there ... But cant get the com port to forward through .. A problem lots have and i am sure when I am more awake I'll get wine there. Is there any plans for a native Linux version (I would be happy to help with testing and coding) as far as I mono would run this program quite happily just there is no support for winforms :( maybe a work around can be found. Failing that Is there a list somewhere of the serial commands and responses to adn from the device and I'll take a stab at a Linux client myself .. will take a while I expect. I am sure if I pile through the python script it is all there just hoping I might be spared that task :P

Is anyone else trying this out ..
My experience so far:

OMG the Com port is not being detected ... read loads of crap on STMicroelectronics Virtual Com Port from ages back ... then noticed instead of /dev/ttyUSB0 it makes /dev/ttyACM0 .... DOH!!

Tried setting up NanoVNASharp with playonlinux ... so far no go but have not tried too hard yet .... UGH!

nanovna.py came with some issues as well but not hard to sort out just a little ugh

so first make sure you install the dependencies:

$ pip install numpy
$ pip install scikit-rf

I found pip install scikit-rf needed sudo so

$ pip install numpy
$ sudo pip install scikit-rf

Then nanovan.py complains about the com port ...

Traceback (most recent call last):
File "./nanovna.py", line 330, in <module>nv.set_port(opt.port)
File "./nanovna.py", line 58, in set_port self.send_command("port %d\r" % port)
File "./nanovna.py", line 48, in send_command self.open()
File "./nanovna.py", line 40, in open self.serial = serial.Serial(self.dev)
File "/usr/lib/python2.7/dist-packages/serial/serialutil.py", line 240, in __init__ self.open()
File "/usr/lib/python2.7/dist-packages/serial/serialposix.py", line 268, in open raise SerialException(msg.errno, "could not open port {}: {}".format(self._port, msg))serial.serialutil.SerialException: [Errno 2] could not open port /dev/cu.usbmodem401: [Errno 2] No such file or directory: '/dev/cu.usbmodem401'

Tried passing the port to nanovna.py using the -P switch:
$ ./nanovna.py -P /dev/ttyACM0
Usage: nanovna.py: [options]
nanovna.py: error: option -P: invalid integer value: '/dev/ttyACM0'

Then brain kicked in ... it is the the OMG early hours right now :P and used the -d switch -P must be for setting he channel Port BIG DOH!!

With that working I have been trying to get plots all seems to go ok only I get a screen showing a plot (wish I could attach (admins?))

will try an explain

running ./nanovna.py -d /dev/ttyACM0 -P 0 -v -W gets me a graph in matlib x 0.0 to 3.0 y 1.000 ti 1.025 at this point i was all YAY .. then I zoomed out and moved around no data showing out of these scales ... ok me thinks pass a frequency and perhaps those numbers move so just a test i pluck 7Mhz out of my head and run ./nanovna.py -d /dev/ttyACM0 -P 0 -F 7000000 -v -W and get exactly the same graph .... have i missed something the -h doesn't specify how to send the Freq (i.e. Hz Khz Mhz)

So after my long winded post (sorry all) am am left with:

How do you get a graph of the area you want?
What is the -c scan by script option anyone played with that yet?
And the biggy has anyone coded a live updating graph like the vna/j software ... or better yet a plugin for vna/J?

Cheers All

Tim M0THM

Bob,
The charging circuit is part of the 3.7v to 5v inverter.
I soldered (welded ;-) ) an old Motorola really thin cell battery to mine and it charges without issue.

Q: when you apply power via the USB, is there a blue flashing LED?
When there is no battery or the battery is low, it flashes.
Mine stopped flashing and stayed ON after my battery was charged.
Post a photo of your board (remove the rear cover) so you can compare to mine.

73 Larry

Folks:

Regarding batteries, I ordered mine on Banggood, and the description
contained this caveat:



* Batteries are not included because of the safety of international
transportation. But we have reserved a power management IC, you can
weld your own batteries.
Or use other power sources, such as power bank, to supply power to it
through USB interface.
*

Sure enough it doesnt charge, and as they advise above, I run mine off a
USB battery bank. I havent cracked the case to look, but I imagine I will
add a battery sooner or later.

73;
Bob KV4PC

While playing with NanoVNA Sharp (1.02), I realized there are no marker functions. Do any of the SW people know if markers can be added?
Thanks
Frank

I wouldn't worry too much about the message "This user is no longer registered on eBay". Often the cause of the message is the seller hasn't paid the fees that are due so ebay suspends the account. Most sellers pay the fees and get the account reinstated; once in a while one fades away, never to be heard from again. Usually the latter happens when sellers having little or no feedback. With an item of this expense the seller most likely will send it with some sort of tracking number attached. If you have a tracking number, go to Postal Ninja and see if the package is enroute. If you don't have a tracking number or the package isn't enroute, submit a refund request and ebay should process it fairly quickly.

Regards,
George

The firmware I compiled has been optimized for the touch screen of my hardware，Download to to other hardware may require recalibration. You can use the shell connection and calibrate via the "touchcal" command.

Hugen,
I noticed that the accuracy of the touchscreen is not the best. I was going through the NanoVNA GitHub source and I saw a few calibration and self test routines in control.c .
Do you know how to get to them or do you need to recompile the code with a runtime flag to enable?

Thanks

On Wed, Jun 26, 2019 at 01:47 AM, <f4htq@...> wrote:

Dear Gen ( i hope Gen is your first name)
Glad to meet you in this forum.
Have you planed to make this C# software open source ?
I have the same question for the 900MHz NanoVNA firmware.
Regards,
David, F4HTQ.

There's no plan for open source nanovnasharp in the short term.
The 900M firmware will comply with the gnu License and open source after fixing some errors.

Dear Gen ( i hope Gen is your first name)
Glad to meet you in this forum.
Have you planed to make this C# software open source ?
I have the same question for the 900MHz NanoVNA firmware.
Regards,
David, F4HTQ.

I've pushed both the nanoVNA_900_AA_20190611.dfu and nanoVNA_900_ch_20190505.dfu firmware to my 'Gecko' VNA and have found that they were compiled by gen111.taobao.com as that URL appears on the startup screen under the nanoVNA name.

I would be interested to hear if any others have pushed any of the firmware found in the download archives mentioned previously in this group.

I've noticed that they don't always start up and just hang at the boot screen.

Comments?

I would check ALL the solder joints.
I thought I got ripped paying $75 for mine, but maybe a better manufacturer :-)
It's all Chinese junk

mdmcpq.inf c:\windows\inf
usbser.sys c:\windows\system32\drivers

If it is a x64 system, try to modify themdmcpq.inf

[FakeModemCopyFileSection]
usbser.sys,,,0x20

to

[FakeModemCopyFileSection]
;usbser.sys,,,0x20

Thanks Frank, I will take a look at the usb socket soldering. Perhaps that is the issue?
72
Dom
M1KTA

I connected it to a USB cable and turned it on, nothing. Pulled the USB and there it came up. Plugged the USB in again, and was able to get it to connect to Nanovna sharp (v1.20). Running it in auto update, I can see my tunable filter move without having to hit "get data"

I hooked mine (White Gecko) to a tunable filter (63 to 125MHz) and I was impressed with what I saw S21 and S11 looked lit was when I swepted it at work. I was recently?? laid off (retired?) and want to do some duplexer tuning, and needed something to do it with . I have a sweep gen and hybrid coupler (plus detector) but you cant get return loss
I think it is good enough for most ham work. I'll have to look at some of my antennas

It will detune hi freq stuff. Having worked in RF from the KHz to GHz, I know it effects sensitive circuits plus it picks up all kinds of crap. Better off cleaning it off with alcohol then blowing it off. If you dont plow it off, the stuff just moves around the board. I always soaked in 99% IPA (industrial), but above 70% is OK. You can get some 91 to 98 or so at some drugs stores

Tried the gecko version with various different USB cables that do work with phones and other electronics and do NOT see the board either under Linux or Windows.
I might try with an ICSP header.
So that is a big fail for me.
The flux HAS to be cleaned off this is basic QC really. It has started to collect dust/fluff anyway even though has not seen much more than the bench.

72

Dom
M1KTA