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Re: NanoVNA application by OneOfEleven #applications

 

v0.1.63 should be fully working now with .bin, .dfu and .hex files.

Let me know if not.
Re: Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

[email protected]
 

Roger I'll check that too and report back. All help is appreciated thank you guys for taking the time to help me with this.. Much appreciated. Thank you sirs!!!!
Re: Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

[email protected]
 

I'd bet anything it's either a shorted or bad component. Little smd capacitor or something. And I'll trace it down. Again I ain't no master of electronics. But I'm nice with a meter and an iron. But thank you for your help Larry. Hat off to you sir
Re: Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

[email protected]
 

OK so I peeled the screen out and soldered the main flex ribbon. Buy it didnt help.THEN....boy I had unplugged the battery for safety and forgot. Well I plugged it in an boom. On it comes display works no problem. The tinkerer in me suspects a short in the charge circuit. Which is directly affecting the display. I'm no engineer but seems to make sense. Figured I'd put this out there in case anyone else buys from these dirt bags
Re: Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

 

Hi Roger,
The issue was described as sometimes the user gets a white screen and sometimes the unit displays everything correctly on the LCD.
Several forum members and I had a similar experience and resoldering the flex fixed the problem.
...Larry

On Tuesday, August 4, 2020, 3:36:51 p.m. EDT, Roger Need via groups.io <sailtamarack@...> wrote:

Larry,

I seem to recall some posts where the firmware was not installed correctly or the unit was in DFU mode and the NanoVNA had a white screen.? Jumpering the pins to DFU mode and reinstalling firmware solved the problem.

I am probably wrong and you have a better answer.

Roger
phase /delay lines

Mike
 

Hello Group,

Is there any tutorials on measuring phasing harness for Chrisman phased verticals?

Thanks

Mike WA3O
Re: NanoVNA application by OneOfEleven #applications

 

On Tue, Aug 4, 2020 at 04:22 PM, OneOfEleven wrote:


On Tue, Aug 4, 2020 at 08:17 PM, DiSlord wrote:
I use DfuSe v3.0.6 from STM
That's what I've been using too, but I only get DFU files with a single image
element within it.

Can yourself or Igor send me the DFU file it's not working with please ? .. I
can fix things then.
==================================================

/g/nanovna-users/message/16157
Re: NanoVNA application by OneOfEleven #applications

 

On Tue, Aug 4, 2020 at 08:17 PM, DiSlord wrote:
I use DfuSe v3.0.6 from STM
That's what I've been using too, but I only get DFU files with a single image element within it.

Can yourself or Igor send me the DFU file it's not working with please ? .. I can fix things then.
Re: NanoVNA application by OneOfEleven #applications

 

I use DfuSe v3.0.6 from STM
Re: Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

 

If, when the unit is running on battery only, the activity LED is flashing, check the LCD cable.
If the LED is not flashing - you've got other hardware or firmware problems.
Since there are a number of manufacturers of the original Nanovna, and the quality varies, you'll have to go slow and eliminate each area.
Good luck.

On Tuesday, August 4, 2020, 2:58:56 p.m. EDT, bmanthug@... <bmanthug@...> wrote:

OK that's what I was looking for. I'm not sending it back. I'm way too much of a tinkerer to bother with that. I'll just buy another and leave negative feedback. But knowing it's the ribbon I'll just pop the screen out and fix it. Anything specific I should know or do you not know
Re: NanoVNA application by OneOfEleven #applications

 

Could have your DFU file DiSlord to use and fix the problem with ?

It's not a bug, just a small limit I have placed on the DFU file format, I can modify to allow more DFU types.

What did you use to compile to the DFU file with I wonder ?
Re: Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

[email protected]
 

OK that's what I was looking for. I'm not sending it back. I'm way too much of a tinkerer to bother with that. I'll just buy another and leave negative feedback. But knowing it's the ribbon I'll just pop the screen out and fix it. Anything specific I should know or do you not know
building from source

Glen K4KV
 

Apparently, I made a big mistake.? I let the Eclipse run and run.? It now has all

project boards known to man in it.? When I did a clean then build all, it took more than

half an hour.

I kept seeing the boards coming across on the Console, like F103Dicovery, then Olimex, then Nucleo, etc.

Perhaps 100's of them.

I guess I have to figure out how to select one project board only...

It apparently, now, compiled almost all of them without errors. I will have to search the hard drive for

the files...

73

Glen K4KV

ps - Life was a lot more simple, when I wrote all the code myself and did not use Github
Re: Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

 

If you bought it on eBay, you need to open a refund complaint with eBay support and send this unit back to get a refund.
It sounds like you were sent a faulty unit - ebay is very good at keeping its vendors honest.

Aside from that, if you see the activity LED flashing (not the charge LED) when the display is white, it's most likely a display issue.
If you're VERY careful, you can pop the LCD out of its frame and touch up the solder on its ribbon cable.

On Tuesday, August 4, 2020, 2:49:08 p.m. EDT, bmanthug@... <bmanthug@...> wrote:

I have the nano vna h and brand new out of the box it has white screen. Now I assumed I was seeing the back light and the screen was toast. No response from "the888store" on ebay where I bought it. But I was using it with the computer and the coax cable I had to solder to it in true hacker fashion. Because they didn't send me any cables at all either. But I had it plugged in to the computer and when I unplugged it.... The screen stared working perfect. Upon plugging it back in when it died...the screen stopped working. I need to know what it is that's causing it to be in and out like this. Anyone has any info I would greatly appreciate it
Brand new vna screen messed up #crash #hardware #improvement #nanovna-h_v3dot4 #white

[email protected]
 

I have the nano vna h and brand new out of the box it has white screen. Now I assumed I was seeing the back light and the screen was toast. No response from "the888store" on ebay where I bought it. But I was using it with the computer and the coax cable I had to solder to it in true hacker fashion. Because they didn't send me any cables at all either. But I had it plugged in to the computer and when I unplugged it.... The screen stared working perfect. Upon plugging it back in when it died...the screen stopped working. I need to know what it is that's causing it to be in and out like this. Anyone has any info I would greatly appreciate it
Re: NanoVNA application by OneOfEleven #applications

 

On Tue, Aug 4, 2020 at 11:36 AM, OneOfEleven wrote:


And try not to upload a .HEX file - for now.

Stay with .DFU or .BIN files - for now.
87189 bytes loaded OK from G:\Github\forkNanoVNA\nanoVNA-H4 v1.0.12 beta.dfu
Invalid number of DFU elements [2]
Re: NanoVNA application by OneOfEleven #applications

 

OneOfEleven.
Error in FW by DiSlord.
It looks Ok with your FW.
73.

FW_DiSlord.PNG
FW_OneOfEleven.PNG

Re: NanoVNA application by OneOfEleven #applications

 

And try not to upload a .HEX file - for now.

Stay with .DFU or .BIN files - for now.
Re: building from source

 

Using an Ubuntu 18.04, here are the instructions in order to have a build from the excellent work of DiSlord

=======================================================================================
wget
sudo tar xfj gcc-arm-none-eabi-8-2018-q4-major-linux.tar.bz2 -C /usr/local
PATH=/usr/local/gcc-arm-none-eabi-8-2018-q4-major/bin:$PATH

git clone --single-branch --branch H4
cd NanoVNA
git submodule update --init --recursive

make
===================================================================

After that, successful build output files reside in NanoVNA/build folder.
Hope these help you guys.
This is the method I use and it works and builds ok for me here.

73,
Christos SV1EIA
Re: NanoVNA application by OneOfEleven #applications

 

I've finished off the firmware upload code but I canonly test on my little NanoVNA-H (STM32F072 MCU), I can't test on the H4, so proceed with caution.

If you try it and it fails then do let me know, and also make sure you have an ST-Link of some sorts to hand to recover your VNA.

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