开云体育

My previous post was about missing Smith chart. If you have problems with installation sometimes it happens because there is a problem with file. Have you tried to reupload that zip-files, or some older version.

I had this kind of problem when I started using Saver. The reason was missing files. There are Smith chart images in the zip-files which are needed.

Note too that on Debian derived systems you need to specify python major version when you apt libraries.? e.g., "apt install python-numpy" gets for v2.? "apt install python3-numpy" gets for v3.

On 1/15/20 3:54 PM, n5kzw wrote:

Just wasted the afternoon trying to build or install PyQt5 on Ubuntu 18.04

???? In Mint, which is based on Ubuntu, it's python-pyqt5.? And it comes from Ubuntu:


apt show python-pyqt5
Package: python-pyqt5
Version: 5.10.1+dfsg-1ubuntu2
Priority: optional
Section: universe/python
Source: pyqt5
Origin: Ubuntu
Maintainer: Ubuntu Developers <ubuntu-devel-discuss@...>

Hi Graeme,
you can definitely install Python 3.7 next to Python 3.6, if your OS
requires it.

I'm a little confused as to the decision on the Linux Mint packagers to
release 19.3 late last year with Python 3.6, when 3.7 was already more than
18 months old, and 3.8 had just been released as well. Going with a version
that old is bound to cause problems for the users.

--
Rune / 5Q5R

On 1/15/20 4:12 PM, Graeme Jury wrote:

I can't simply unload python 3.6 and upgrade to python 3.7

???? You don't have to, you can have both 3.6 and 3.7 installed. 3.6 remains the default for the Mint applications, and when you want to start something that requires 3.7, you simply preface it with python3.7, like so:? "python3.7 nanovna-saver.py."?? I currently have the following python versions installed on Mint 19.1 Cinnamon:


jim@jim-P55A-UD3P:~$ python --version
Python 2.7.17

jim@jim-P55A-UD3P:~$ python3 --version
Python 3.6.9

jim@jim-P55A-UD3P:~$ python3.7 --version
Python 3.7.5

I install again the SP and VC++ but still receive the same error.

At the first try, I installed previously the "api-ms-win-core-xxx.dll" separately because I had error that they were missing. Step by step, I was able to go further in the install process.

I try to remove one of those dll with the identical result.
Install it again let me go further.

After new install SP and VC++, I'm still having "nanovna saver has top working" at the end of the installation.

Any idea how to solve ?

PS: I install successfully on my Win 10.

Yves

On 1/15/20 11:02 AM, Alberto I2PHD wrote:

Unfortunately apt-get does not know any of those....
I tried installing PyQt5, numpy, scipy and pyserial, but apt-get declared those as unknown packages...
Probably they are part of a bigger package, but here I need the advice of a Linux expert...

???? apt-get probably won't find them unless you use the exact name.? Synaptic, on the other hand, probably will.? Is Synaptic available in your distro?

On 1/15/20 6:31 AM, Chuck Carpenter wrote:

I do have some background writing User's Guides, Training Manuals and so forth

Does that mean you just volunteered to write a better book?

On Wed, Jan 15, 2020 at 06:01 PM, KD8CGH wrote:

" My nanaVNA-H only works with PC programs with the C to A cable. It powers up with the C to C but I can't connect to it. It seems that each has its own personality. "
====================================================
The original NanoVNA-H's were missing the termination resistors on the PCB that allow C to C data connection. This was corrected in the NanoVNA-H units that hugen currently sells at his Alibaba store. Hugen now even includes a C to C cable in the accessories specifically for this purpose.

- Herb

I meant sudo of course.

73

-Jim
NU0C

On Wed, 15 Jan 2020 20:22:17 -0600
"Jim Shorney" <jshorney@...> wrote:

install with susdo

I have it running under Kubuntu 18.04 without a lot of effort. Using the Muon package manager I easily located the proper dependencies and installed them. Installed Python 3.7 from the deadsnakes ppa.



The install instructions for nanvna-saver worked at that point up until the dreaded permision error on /tmp. Running the install with susdo fixed that. In retrospect, I may not have even needed that. K/Ubuntu has a python-pyqt package listed in the package manager.

All this apt-get CLI stuff is great, but Muon can be your best friend. Disclaimer: I usually don't like installing from ppa because I have had strange things happen in the past, but I do make occasional exceptions for ppas that have good reputations.

73

-Jim
NU0C

On Wed, 15 Jan 2020 15:54:41 -0800
"n5kzw" <n5kzw@...> wrote:

My parents gave me my first "computer" (a Brainiac) back about 1962. I have been building and programming them ever since then. I thought Pascal was a pretty stupid language, but in all my years I have never encountered a language as fucked up as Python. Just wasted the afternoon trying to build or install PyQt5 on Ubuntu 18.04 following every web tutorial I could find with the result that I now have a bunch of junk to scrub from my system, and no PyQt5, numpy, PtSci, sip ... What a waste. - Ed

That's it! How could I not remember deadsnakes....

I generally use the muon package manager to search for packages that I don't know the exact name of. Command line apt-get is for when you know what you want. :D

73

-Jim
NU0C


On Wed, 15 Jan 2020 14:29:49 -0800
"Rick Commo" <rick.commo@...> wrote:

Jim,

By any cgance was it the one shown below? I got this from:

sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt-get update
sudo apt-get install python3.7

Thanks,
-rick, K7LOG

On Jan 15, 2020, at 13:58, Jim Shorney <jshorney@...> wrote:


When I was researching how to install 3.7 alongside my system default version (Ubuntu/Kubuntu) without breaking it I found what is claimed to be a "preferred PPA" among Python developers. It indeed installed 3.7 without clashing with the system's preferred version. Where there is a will, there is a way.

73

-Jim
NU0C

On Wed, 15 Jan 2020 13:22:27 -0800
"Rick Commo" <rick.commo@...> wrote:

One practice is for a distro to have both Python 2.7 and python 3.x installed. The command “python” usually defaults to Python 2.7.

If the distro has done this then you will probably find the following in /usr/bin (taken from my Rasberry Pi 2B)

lrwxrwxrwx 1 root root 9 Mar 28 2015 python -> python2.7
lrwxrwxrwx 1 root root 9 Mar 28 2015 python2 -> python2.7
-rwxr-xr-x 1 root root 3201580 Sep 26 2018 python2.7
lrwxrwxrwx 1 root root 9 Dec 5 2014 python3 -> python3.4
-rwxr-xr-x 2 root root 3816928 Sep 26 2018 python3.4

The critical thing to realize here is that the command “python” can quite easily be changed to any installed version of Python. However you do have to remember that some programs that use “python” may, in fact, assume a prticular version.

To get Python 3.7, you might have to add a PPA for it to the repository list. After that your do an "apt update” and you should be good to go.




On Jan 15, 2020, at 12:40, Oristo <ormpoa@...> wrote:

Probably they are part of a bigger package,
but here I need the advice of a Linux expert...

You probably want e.g, python3-numpy, python3-pyqt5, etc
Be aware that there are incompatible versions of Python
and many Linux distros try support more than Python 3..

My nanaVNA-H only works with PC programs with the C to A cable. It powers up with the C to C but I can't connect to it. It seems that each has its own personality.

On Wed, Jan 15, 2020 at 03:51 PM, Steve London wrote:

" Why did they even go with a USB-C jack on the NanoVNA "
===================================================
The USB-C jack is not polarized and the cable can be inserted in either direction. You would be surprised how many people damage their phones or tablets by forcing a cable into a micro-USB port in the wrong direction. My wife, who I love to death, is one of them.

- Herb

I have had issues as well.? I own two nanoVNAs.? One has had the USB connector removed due to a short.? Now I can't put it back because the pins are too small and too close together for my old eyes.? So I soldered a cable to the board temporarily to charge the battery but of course I have no data acess.
The other one has the issue that when it's plugged in, the nano won't run.? I have to unplug it and then it works; after it's running I can put the connector back and all usually is ok.? I don't know if it matters how the other end of the cable is terminated.
Both issues are such that I can still get use from the units but it would be nice to have them as original.
Bob

@Oristo, Hey, I got it working! I was mixed up on the two names (SimpleUsbTerminal on Github, and Serial USB Terminal on Play Store. Anyway, with the CDC device, it works the same as with my PC. Thank you!

Alberto, are you a member of the dialout group? If not this is likely to be the reason for needing root access.

Graeme

Ahh this is turning out to be more tricky than I thought. I am using Linux Mint 19.3 which uses python 3.6. It was no problem to load the dependencies which I listed for python 3.6 but they would not work when I used them with python 3.7 which although it looked in the right place for the dist-packages it could not load them so I guess that there are significant changes. Unfortunately I can't simply unload python 3.6 and upgrade to python 3.7 as 3.6 is integrated into too many Mint packages and is really a system file. I guess that I am stuck with nanoVNAsaver 0.2.1 for the next 2 or 3 years until a new Mint version brings a higher version of python or unless I switch to another distro like Arch or openSuse which keep very current.

I like Mint but don't like not progressing nanoVNAsaver.

73, Graeme ZL2APV

Probably they are part of a bigger package,
but here I need the advice of a Linux expert...

You probably want e.g, python3-numpy, python3-pyqt5, etc
Be aware that there are incompatible versions of Python
and many Linux distros try support more than Python 3..

===================================

Thanks Oristo,

SUCCESS AT LAST !

I installed these three packages :? python3-numpy, python3-scipy and python3-serial
and then the command

sudo python3.7 ./nanovna-saver/nanovna-saver.py

did work. I was forced to execute it under sudo, otherwise I got some permission errors,
don't remember now the details.

TNX

--
/*73 Alberto I2PHD*
<<< >>>/