Re: Is my off brand a Brick?
Thank you Larry and Orist for your patience.
All is well. I am now running hugen79/NanoVNA-H build time Jan 18 2020 23:46:29.
Now back to Calibrations.
73
John
TI4JWC
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Re: Running NanoVNA-Saver on Windows 7
Hello Dick,
as others have mentioned, I do build the binaries on and for Windows 7 32
bit - at least for as long as Microsoft will allow me to, we'll see :-)
On first startup, the .exe unpacks a temporary Python environment,
including the requirements - PyQt5, numpy etc. This takes a while - and
crucially, some forms of antivirus have been quite unhappy with it! So if
you have a third party antivirus software, it *might* be blocking this
operation.
I don't want to recommend that you disable your antivirus on principle. But
if you have downloaded the executable from my github page, it should not
contain any code that your antivirus needs to protect against.
I hope you figure it out, and that you enjoy using the software!
--
Rune / 5Q5R
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On Tue, 28 Jan 2020 at 19:25, Dick <w1ksz@...> wrote: I wanted to install NanoSaver on an older laptop running Windows 7 Home
Premium.
It has Service Pack 1 installed.
I downloaded and installed Visual Studio Community 2019, which I thought
was the
proper thing to do after following the Link from Github.
Opening NanoSaver, I get to the screen with the blinking curser and get no
further.
So, it looks like the Github link was not the right thing to do.
How does one get NanoSaver to work on Windows 7 ?
Thanks for the help.
Dick, W1KSZ
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Re: Running NanoVNA-Saver on Windows 7
Yes, it will take a moment before the program starts, but here too NanoVnaSaver works on 32 bit Win 7.
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Re: Running NanoVNA-Saver on Windows 7
Hi Dick - I downloaded and installed Visual Studio Community 2019,
which I thought was the proper thing to do after following the Link from Github. My experience with Python from Visual Studio Community (on Windows 8.1) was that it did not add that Python to Windows' default path, which I did, then still had to add pyserial, etc.
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Many purchasers of a NanoVNA are first time users of a VNA. They want to know how a VNA works, an understanding of calibration, basic terminology (Return Loss, VSWR, Smith Charts) and how to make accurate measurements.
I came across this excellent 3 part video VNA tutorial by a company that sells lab grade equipment. In total the three videos take 35 minutes and it is time well spent if you really want to learn the basic principles.
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Re: Running NanoVNA-Saver on Windows 7
Dick,
Rune develops NanoVNA-saver on a Windows 7 computer so it definitely runs on that operating system. On his GitHub page, , he states, "The downloadable executable runs directly, and requires no installation. For Windows 7, it does require Service Pack 1 and Microsoft VC++ Redistributable. "
- Herb
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Re: Running NanoVNA-Saver on Windows 7
NanovnaSaver should work without issue if you're running the EXE file on Win7 with SP1.
How long did you let the screen with the blinking cursor sit for?
Did you close it after a few seconds?
The first time you run the EXE, there are some tasks that need to complete in the background - that can take up to a minute.
There have been other discussions regarding that in the forum.
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On Tuesday, January 28, 2020, 1:25:50 p.m. GMT-5, Dick <w1ksz@...> wrote:
I wanted to install NanoSaver on an older laptop running Windows 7 Home Premium.
It has Service Pack 1 installed.
I downloaded and installed Visual Studio Community 2019, which I thought was the
proper thing to do after following the Link from Github.
Opening NanoSaver, I get to the screen with the blinking curser and get no further.
So, it looks like the Github link was not the right thing to do.
How does one get NanoSaver to work on Windows 7 ?
Thanks for the help.
Dick, W1KSZ
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Re: characteristic impedance
Hello,
It looks like, that *nanoVNA-Partner version 0.20* does have a problem with the firmware
from *Hugen, version 0.4.0-3*.
So I tried with *nanoVNA-saver* and it works pretty well, see the appended screen shots.
73, Rudi DL5FA
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Running NanoVNA-Saver on Windows 7
I wanted to install NanoSaver on an older laptop running Windows 7 Home Premium.
It has Service Pack 1 installed.
I downloaded and installed Visual Studio Community 2019, which I thought was the
proper thing to do after following the Link from Github.
Opening NanoSaver, I get to the screen with the blinking curser and get no further.
So, it looks like the Github link was not the right thing to do.
How does one get NanoSaver to work on Windows 7 ?
Thanks for the help.
Dick, W1KSZ
|
Re: Is my off brand a Brick?
I'm not sure what you're looking at but the link in that document is still valid on the STM site but you need to register before you can download.
It also appears you have not downloaded from an open Google Drive location before.
You do NOT need to purchase anything - all you need to do is right-click on the file and select download - just worked for me.
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On Tuesday, January 28, 2020, 12:54:10 p.m. GMT-5, John via Groups.Io <n0ure@...> wrote:
Larry, that IS the exact document I am using.
The URL listed in that file on the third line is no longer valid.
When I go to Hugen's Google drive and try to DL the Dfu tool no DL occurs
It appears that I must purchase Google Drive space before a transfer will occur. .
NOT the arrangement I am look for.
John
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Re: Is my off brand a Brick?
Larry, that IS the exact document I am using.
The URL listed in that file on the third line is no longer valid.
When I go to Hugen's Google drive and try to DL the Dfu tool no DL occurs
It appears that I must purchase Google Drive space before a transfer will occur. .
NOT the arrangement I am look for.
John
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Re: Is my off brand a Brick?
Larry, that is the exact documentation I am using.
The second line of that document has the EXACT URL that is no longer valid.
John
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Re: Is my off brand a Brick?
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On Tuesday, January 28, 2020, 12:27:34 p.m. GMT-5, John via Groups.Io <n0ure@...> wrote:
I have the small dfu file.
I am having problems DL DfuSe Demo.
The URL? is not longer valid.
Searching the st sight I do find a download for a replacement product. They ask for name and email.
When I receive the email and select the DOWNLOAD button I get 403? Disallowed ! ??
What program can I DL to push a replacement dfu file?
John
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Re: Is my off brand a Brick?
I have the small dfu file.
I am having problems DL DfuSe Demo.
The URL is not longer valid.
Searching the st sight I do find a download for a replacement product. They ask for name and email.
When I receive the email and select the DOWNLOAD button I get 403 Disallowed ! ??
What program can I DL to push a replacement dfu file?
John
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Re: iffy readings for swr
If you cal and measure at the rig end, that will indicate the antenna
impedance as altered by the length of coax. If you cal at the end antenna
end of the coax and them measure at the rig end, that will give you the
impedance of the antenna as you have included the coax length in your cal.
We term this the location of the 'measurement plane'. If you measure at
the rig end and knowing the length of coax (which you do) and the coax type
(likely RG-58) for the velocity factor (likely 0.67), you can use SimSmith
to 'take out' the impedance transformative characteristics of the coax run.
Dave - W?LEV
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On Tue, Jan 28, 2020 at 3:57 PM <nanovnauser@...> wrote: Hi all,ive a antenna consisting of 2 80m mobile whips in a dipole
configuration as i dont have room for anything else,i get different
readings on both my analysers,the antenna is at the end of a 60ft run of
coax,is it better to cal the vna by putting the cal load and short etc at
the end of the cable run,ie where the coax joins the antenna?,thanks in
advance.73
--
*Dave - W?LEV*
*Just Let Darwin Work*
*Just Think*
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Re: Interesting VNA design articles in the HP Journal from 1984
I still feel cheated when I do tests at home on my NanoNVA, and thinking back to when I was young, doing the same tests on a huge old HP-machine... how far technology has came. The same applies to my Siglent Spectrum Analyzer compared to the first spectrum analyzers I used, from a Singer something, to a Tektronix 491 to HP141 to the HP8565's. In the old days, working at 100MHz was a challenge, working at 900MHz was Black Magic, 10GHz was just plumbing.I remember servicing old synths (PLL's back then was magic), it was a huge rack to generate 1GHz. (125MHz PLL, followed by a string of multipliers). Now I can do all that with a single IC....
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Re: Setting the vbat_offset
Hi Alberto,
I set it up by measuring the voltage at the battery connection points, and noted this.
I checked the voltage displayed with nanoVNA-Saver or nanoVNAPartner. I typed the difference between the two with Terra Term at vbat_offset.
That is all. ===================== Hi Gyula, ? thanks. Have you perhaps checked if the offset so measured corresponds to the voltage drop across D2 ? That would seem logical... -- /*73 Alberto I2PHD* <<< >>>/
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Re: Recognizing NanoVNA-H4 for software
Hi Herb,
thanks for that information! Exactly what I needed! I will try to implement
that for the next version of NanoVNA-Saver :-)
--
Rune / 5Q5R
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On Tue, 28 Jan 2020 at 16:41, hwalker <herbwalker2476@...> wrote: On Tue, Jan 28, 2020 at 07:04 AM, Larry Rothman wrote:
What does the info console command return?
If it says H4 somewhere, why not use that?
================================================
The info command returns the following:
Kernel: 4.0.0
Compiler: GCC 8.3.1 20190703 (release) [gcc-8-branch revision 273027]
Architecture: ARMv7E-M
Core Variant: Cortex-M4F
Port Info: Advanced kernel mode
Platform: STM32F303xC Analog & DSP
Board: NanoVNA-H 4
Build time: Jan 18 2020 - 22:54:30
Its a lot of information to parse but I guess sudo code like < If in
info_cmd 'STM32F303xC' > or < If in info_cmd 'NanoVNA-H 4' > would work.
As far as actual capture coding goes, the following, pulled from your
NanoVNA-saver capture module, works for me:
ser.flushInput() # Clear the buffer
cmd = "capture" + "\r" # Add return to command string
ser.write(cmd.encode())
ser.flush() # Send out now
try:
timeout = ser.timeout
ser.timeout = 2
ser.readline() # trash echoed command
image_data = ser.read(320 * 480 * 2)
ser.timeout = timeout
rgb_data = struct.unpack(">153600H", image_data)
rgb_array = np.array(rgb_data, dtype=np.uint32)
rgba_array = (0xFF000000 +
((rgb_array & 0xF800) >> 8) +
((rgb_array & 0x07E0) << 5) +
((rgb_array & 0x001F) << 19))
# ((rgb_array & 0x001F) << 3))
image = Image.frombuffer('RGBA', (480, 320), rgba_array, 'raw',
'RGBA', 0, 1)
image.show()
image.save(str(sys.argv[1])+'.png')
print("\nCaptured screenshot")
ser.close()
print('\n closed: {}'.format(port))
except serial.SerialException as exc:
print("Exception while capturing screenshot: %s", exc)
When I used your original ((rgb_array & 0x001F) << 3)) the H4 captured
screen colors were incorrect. Changing it to ((rgb_array & 0x001F) << 19))
produced correct captured screen colors on my set-up.
If you need a beta tester I'd be glad to help.
- Herb
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Re: Recognizing NanoVNA-H4 for software
Hi Larry,
there's no reason not to use it - other than not knowing what it actually
returned :-) I see Herb has now answered that question ;-)
--
Rune / 5Q5R
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On Tue, 28 Jan 2020 at 16:04, Larry Rothman <nlroth@...> wrote: What does the info console command return?
If it says H4 somewhere, why not use that?
On Tuesday, January 28, 2020, 9:55:34 a.m. GMT-5, Oristo <
ormpoa@...> wrote:
Hi Rune -
Can any of you help me with this? I just hacked my Perl script to handle this by brute force, namely:
keep reading into a buffer until len(buffer) does not increase,
then use that accumulated buffer length to sort screen size.
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Re: characteristic impedance
On Tue, Jan 28, 2020 at 07:48 AM, <nanovnauser@...> wrote:
has anyone written a decent manual for the nanosaver s/w?
=======================================================
Probably the best write up has been by Gunthard Kraus at
There is a lot of other information available in the groups Wiki. You might try your hand at producing a manual and contributing back to the group if you produce something decent.
- Herb
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Oristo
Roger Need
Dick
Alberto I2PHD