Hi there fellow NanoVNA V2 owners

I would like to use a coaxial dielectric probe to analyse some fluid. The taking of a single reading is simple enough, but I would like to calibrate once and then take multiple readings at 2-sec intervals. The data collected I can then integrate with other time dependent variables such as temperature and volume (as some of the fluid evaporates).

Does anyone in the community have an idea as to the simplest solution (beyond multiple screen grabs and painful retrospective manual data capture)?

Thanks with much anticipation

On 2/15/22 9:47 AM, Dylan wrote:
> Hi there fellow NanoVNA V2 owners
>
> I would like to use a coaxial dielectric probe to analyse some fluid.
> The taking of a single reading is simple enough, but I would like to
> calibrate once and then take multiple readings at 2-sec intervals. The
> data collected I can then integrate with other time dependent
> variables such as temperature and volume (as some of the fluid
> evaporates).
>
> Does anyone in the community have an idea as to the simplest solution
> (beyond multiple screen grabs and painful retrospective manual data
> capture)?
>
> Thanks with much anticipation
> _._


Does the nanovna2 have a command line interface like the nanovna? You
just send the command to the serial port to get a datapoint (or a
sweep's worth), shove it in a file, and parse it later.

On 2/15/22 9:47 AM, Dylan wrote:
> Hi there fellow NanoVNA V2 owners
>
> I would like to use a coaxial dielectric probe to analyse some fluid.
> The taking of a single reading is simple enough, but I would like to
> calibrate once and then take multiple readings at 2-sec intervals. The
> data collected I can then integrate with other time dependent
> variables such as temperature and volume (as some of the fluid
> evaporates).
>
> Does anyone in the community have an idea as to the simplest solution
> (beyond multiple screen grabs and painful retrospective manual data
> capture)?


ANother approach is to borrow the code from NanoVNA-Saver - there's a
python module NanoVNA-V2.py which exposes a pretty simple interface.

Many thanks Jim

This is precisely what I was looking for.

Additionally I found a purpose built Python script by Kevin O'Brien which
offers a command line interface --- works when placed in the NanoVNA
directory.

https://nanorfe.com/forum/attachments/automating-NanoVNA-saverRe-nanovnav2-Python-or-Matlab-file-for/5ad55bf91344-0/nanovnacmd.py

Thanks again.

Dylan.

On Wed, 16 Feb 2022, 07:10 Jim Lux, <jim@luxfamily.com> wrote:

> On 2/15/22 9:47 AM, Dylan wrote:
> > Hi there fellow NanoVNA V2 owners
> >
> > I would like to use a coaxial dielectric probe to analyse some fluid.
> > The taking of a single reading is simple enough, but I would like to
> > calibrate once and then take multiple readings at 2-sec intervals. The
> > data collected I can then integrate with other time dependent
> > variables such as temperature and volume (as some of the fluid
> > evaporates).
> >
> > Does anyone in the community have an idea as to the simplest solution
> > (beyond multiple screen grabs and painful retrospective manual data
> > capture)?
>
>
> ANother approach is to borrow the code from NanoVNA-Saver - there's a
> python module NanoVNA-V2.py which exposes a pretty simple interface.
>
>
>
>
>
>
>
>

On 2/15/22 11:28 PM, Dylan wrote:
> Many thanks Jim
>
> This is precisely what I was looking for.
>
> Additionally I found a purpose built Python script by Kevin O'Brien
> which offers a command line interface --- works when placed in the
> NanoVNA directory.
>
> https://nanorfe.com/forum/attachments/automating-NanoVNA-saverRe-nanovnav2-Python-or-Matlab-file-for/5ad55bf91344-0/nanovnacmd.py
>
> Thanks again.
>
> Dylan.
>
> On Wed, 16 Feb 2022, 07:10 Jim Lux, <jim@luxfamily.com> wrote:
>
> On 2/15/22 9:47 AM, Dylan wrote:
> > Hi there fellow NanoVNA V2 owners
> >
> > I would like to use a coaxial dielectric probe to analyse some
> fluid.
> > The taking of a single reading is simple enough, but I would
> like to
> > calibrate once and then take multiple readings at 2-sec
> intervals. The
> > data collected I can then integrate with other time dependent
> > variables such as temperature and volume (as some of the fluid
> > evaporates).
> >
> > Does anyone in the community have an idea as to the simplest
> solution
> > (beyond multiple screen grabs and painful retrospective manual data
> > capture)?
>
>
> ANother approach is to borrow the code from NanoVNA-Saver - there's a
> python module NanoVNA-V2.py which exposes a pretty simple interface.
>

Aha.. that's exactly what Kevin did.  Excellent.