Re: Upgrade MCU from STM32F072C8T6 to STM32F303CCT6
Hi Ken, I have thought about it, and am used to LQFP transplants. Have you double checked the pin assignements ? Sometimes ST does subtle changes between series (BTW I think they did to much changes
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Jose Luu
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#1645
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If repackaging an NanoVNA, consider adding a bias-T
I think most people accept that the construction quality of any version of the NanoVNA is extremely poor. In my opinion at least, the NanoVNA needs to be put in an enclosure that offers support and
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Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...>
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#1644
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Re: Getting started with the nanoVNA guide
Thank you very much! Highly appreciated your help and work! 73 de Luis CT2FZI [email protected]> wrote:
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CT2FZI
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#1643
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Re: Better, Worse, Worst....... baloney.
Please note that the images you display are significantly different from the images on the test data. The links I have given have clearly tested the difference between the two£¨ #1310£©. If the
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Hugen
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#1642
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Re: Better, Worse, Worst....... baloney.
Hugen With all due respect, the thread you cite says clearly there is no operational difference among the fully shielded, "better" versions, the "worse" clones, and the worst. No one has presented
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Warren Allgyer
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#1641
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Re: Better, Worse, Worst....... baloney.
You're testing two bad clones, and the results of the two tests should be consistent, but you're using a good cloned image when presenting the test data, which can be misleading.The group has already
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Hugen
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#1640
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Re: Various noob questions
It may be worthwhile to attempt soldering the prongs on the other side because it will not only improve mechanical reliability but may also benefit RF performances (however, the RF improvement will
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biastee@...
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#1639
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Getting started with the nanoVNA guide
https://hexandflex.com/2019/08/31/getting-started-with-the-nanovna-part-1/ I have been working on what I hope is an easy to follow introduction to the nanoVNA. It's fairly basic and aimed at users who
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HexAndFlex
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#1638
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Upgrade MCU from STM32F072C8T6 to STM32F303CCT6
Has anyone though of upgrading the STM32F072C8T6 to other MCU with larger SRAM and flash memory? The original NanoVNA author, ttrftech, uses STM32F303 for his other project CentSDR and has the chip
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Ken Liao, AA6KL
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#1637
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Re: TDR Python Script
Jump on in, Reg, the water's fine! Personally, I would prefer that the TDR function be built into a Windows app (e.g. NanoVNASharp) -- I find using the the NanoVNA's touchscreen more than a little
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Jeff Anderson
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#1636
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Re: Various noob questions
to Frank S, I am interested in ur "kit" but cannot find ur contact info, sri as I am still noobie lol pls contact me @ n8aum-at-yahoo-com
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N8AUM
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#1635
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Re: TDR Python Script
I am absolutely blown away by this thread. I was working on TDR via VNA, but had not started to write any code. Just looking at the mathematics very closely. Particularly because of the manner in
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Reginald Beardsley
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#1634
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Re: TDR Python Script
Hello Would it be possible for you to post your s1p file to Github? I've just It is obviously good to have code to do the TDR analysis on a .s1p file. But having the TDR in real time is very useful.
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Dr. David Kirkby from Kirkby Microwave Ltd <drkirkby@...>
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#1633
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Re: nanoVNA for Dummies
Here is the MENU flow chart: /g/nanovna-users/files/Miscellaneous/nanoVNA%20Menu%20Structure%20v1.1.pdf This is helpful as it permits you to get an eagle eye view of the instrument
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alan victor
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#1632
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Re: nanoVNA for Dummies
Hi Bruce, Try this file: /g/nanovna-users/files/NanoVNA%20Calibration%20Considerations%20and%20Procedure_v1.0.pdf It is in the FILE DIRECTORY FOLDER. Also, there is a MENU breakdown
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alan victor
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#1631
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Re: TDR Python Script
(forgot to add...) ....And so I'm happy with the results from the Matlab TDR script. - Jeff, k6jca
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Jeff Anderson
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#1630
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Re: TDR Python Script
Thanks very much, Rune. I was wondering why they weren't exactly the same. And so I compared your code at https://github.com/mihtjel/nanovna-saver to my Matlab script (listed, below). Functionally,
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Jeff Anderson
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#1629
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Re: NanoVNA with a cracked screen
For those looking for the compatible 3.2 inch display, just do a search on eBay with the following two items in the same line: ili9341 3.2 You'll see individual panels for sale. Check the pinouts in
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Larry Rothman
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#1628
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nanoVNA for Dummies
It's always bewildering to wander into someplace and find that you're trapped inside someone's jargon jungle. I've found myself in that shape when I wandered into the nanoVNA Users group. I'm a noobie
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BruceN
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#1627
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Re: TDR Python Script
Wow! Have I got a lot of catching up to do! I tried, but was unable to find out anything about the xtal which on mine is marked "H26.0 D439" and measures ~3.6 x 2.1 mm. Between xtal and cable
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Reginald Beardsley
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#1626
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