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Hi Larry,

My programming and compilation knowledge is not the best ones to do it but I totally agree with you.

Holger and Gyula told me how to do it with the Python and I was able to run it (yours help is very best) , ….
but it would be nice if someone compiled the latest versions for win 10 / 32-64....

Vy 73
Enrique LU8EFF



-----Mensaje original-----
De: [email protected] [mailto:[email protected]] En nombre de Larry Rothman
Enviado el: martes, 14 de julio de 2020 20:14
Para: [email protected]
Asunto: Re: [nanovna-users] NanoVNA Saver 0.3.3 or 0.3.4

Holger,

One of the newsletters I receive had an article on malware written in Python.
Part of the discussion revolved around how to get the size of the windows package down and there were 3 different Python to EXE utilities presented that are used for non-malware Python to Windows uses.

One of these is: Nuitka -

Right now, the NanoVNA-Saver EXE application is very large and takes time to execute.
What Nuitka does is to convert Python code to C and then compile.
The resultant application size is a fraction of what you get with py2exe or pyinstaller and runs much faster.

Could you try Nuitka on NanovnaSaver to see if it speeds up the application?
I did not look over the entire website but if Nuitka compiles C, it might be able to generate both 32 and 64 bit binaries.

Thanks,
Larry




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El software de antivirus Avast ha analizado este correo electrónico en busca de virus.

The following files have been uploaded to the Files area of the [email protected] group.

• /Nano VNA Saver/Instalar Python 3.8 para NanoVNA-Saver.pdf

By: Enrique A. Wembagher LU8EFF

Description:
Spanish doc for Python Installation on Windows 10 – 32-bit to work NanoVNA-Saver program in later versions to 0.2.2.exe -- Thanks to Holger Müller <dg5dbh@...> and Gyula Molnar <gyula.ha3hz@...>

Holger,

One of the newsletters I receive had an article on malware written in Python.
Part of the discussion revolved around how to get the size of the windows package down and there were 3 different Python to EXE utilities presented that are used for non-malware Python to Windows uses.

One of these is: Nuitka -

Right now, the NanoVNA-Saver EXE application is very large and takes time to execute.
What Nuitka does is to convert Python code to C and then compile.
The resultant application size is a fraction of what you get with py2exe or pyinstaller and runs much faster.

Could you try Nuitka on NanovnaSaver to see if it speeds up the application?
I did not look over the entire website but if Nuitka compiles C, it might be able to generate both 32 and 64 bit binaries.

Thanks,
Larry

OneofEleven & DiSlord,
Currently, the location of the display you need to touch and hold for a screen capture is very small and can take a few attempts with your fingernail along the bottom edge.
I'm wondering if the portion of the display you need to press could be moved over to the battery icon area which is currently not an active touch area of the screen. That would provide for an easy touch location for a stylus.

Also, why do we need both a battery icon and a charge percentage readout? - It's kind of redundant. How about a console switch - one or the other?

Thanks for the great UI & functional improvements folks!
Cheers,
Larry

Traceback (most recent call last):
File "NanoVNASaver/Charts/Polar.py", line 45, in paintEvent
File "NanoVNASaver/Charts/Polar.py", line 87, in drawValues
OverflowError: argument 2 overflowed: value must be in the range -2147483648 to 2147483647
Aborted (core dumped)

Still..............

Screenshots are excellent, and I see buttons that respond more quickly. Fine!

On Tue, Jul 14, 2020 at 01:22 PM, WB2UAQ wrote:

It is based on a paper from Agilent and agrees with G3TXQ's method.

Hi WB2UAQ,

Do you have a link or title for the Agilent paper? I'd very much like to take a look at it.

Many thanks, and 73,

- Jeff, k6jca

Hello Roy.

I believe these type numbers are pretty universal, although I was directly taking the numbers and graphs from my Fair-Rite catalog.

Stackpole, Ferronics, and quite a few other manufacturers use different model designations for the same material...too bad. But they generally state "like 43 material" which has a perm value of 850 nominal. For example Stackpole would designate 4C4 and so. Bottom line, you really need to find out what is the perm value. When I finally know what I have, I paint white out on the sample and use a black ink pen to label the perm value.

Just added two new SD card serial commands that can be used to list the files on your SD card and to also read a file from the card.

"sd_list"
"sd_readfile <filename>"

Typing "help" on the command line will list all the available serial commands.

I id cores by first measuring their physical dimensions. I then measure the inductance at low frequency (even as low as kHz) and calculate the inductance index, AsubL. With these two parameters I have been able to ID the cores against published specs for Fair-Rite Products. The test freq must be below where the real and imaginary permeability begin their rapid changes. Also the drive level must be kept low as well (<10 gauss). I have been doing this for years with good results.
Some where along the way I put a spreadsheet on this site using the S21 Series method of measuring CMC Z. It is based on a paper from Agilent and agrees with G3TXQ's method. In the Agilent paper there is also an S21 Shunt method for measuring low inductances at low freq. 73

On Tuesday 14 July 2020 04:06:08 pm alan victor wrote:

Wind 2 turns on all units whose perm values vary from say 40-10,000 (type 67, 65, 64, 43, 73, 75, 76)

Just curious, do the types you refer to here mean any specific manufacturer? Or are the same type numbers used by more than one? I have started to collect some mfr. data but haven't gotten very far along that path...


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Hi Graeme,

These plots as you stated represent the inductance and loss terms for the ferrite material. Dependent on the construct for the sample to be tested, the leakage inductance can vary and hence the loss term. So as a consequence the crossover point can move dependent on the sample build, for the same ferrite. Consider, if you have Identical ferrite forms, say 2 - hole cores, same physical size. Wind 2 turns on all units whose perm values vary from say 40-10,000 (type 67, 65, 64, 43, 73, 75, 76) you should see a plot of initial permeability (perm values that are well below the crossover point), that increases with larger perm. In all cases, if the measurement frequency is kept low, say below 1 MHz, the L value obtained from a S11 measure would simply increase. That would be a good place to start in an effort to be able to categorize the ferrite material.

Alan

I'll test it right now !!
Thank you!

When you save the screen shot keep your finger on the screen until it tells you all is OK. That way you know it's saved.

Vy Thanks Holger and Gyula !!!

I try...

Vy 73

Enrique LU8EFF


-----Mensaje original-----
De: [email protected] [mailto:[email protected]] En nombre de Gyula Molnar
Enviado el: martes, 14 de julio de 2020 13:43
Para: [email protected]
Asunto: Re: [nanovna-users] NanoVNA Saver 0.3.3 or 0.3.4

ps.: /g/nanovna-users/attachment/10650/0/Installing%20Python%20on%20Windows7-32%20for%20nanoVNA-Saver.pdf

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*** If you are not part of the solution, then you are the problem. ( ) ***




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Have fixed the SD card routines now Igor.

You can change your email preferences for the nanovna-users group by logging into the nanovna-users group and going to your account preferences web page.

DaveD

I upload my firmware to file section
/g/nanovna-users/files/Dislord%27s%20Nanovna%20-H%20Firmware

I am new to using Python, but I have it installed On Windows 10. What is the command syntax to compile the new build?

Gary

Take the link to the Wiki.

Then click Subscription in the Left Column. You have the choice to set your preferences.


73 KE0ZUW