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Sun Shield?
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The NanoVNA is great, among various reasons, because it is so small and light (and inexpensive if damaged) and great for use in the field! Otherwise known as "outside", where there is often bright light, which can make it hard to see the screen.
Any suggestions for making a sun shield? This weekend I grabbed a handy piece of light cardboard and cut into pieces that I then taped together to make a rectangular tube. It works sort of¡I need a darker cardboard, and it sometimes triggers the touch screen. Anyone with experience or advice? Thanks, -kb |
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Seems to me there is work to be done for those with a 3D printer.
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Op ma 1 mrt. 2021 15:54 schreef Kent Borg <kentborg-nanovna@...>: The NanoVNA is great, among various reasons, because it is so small and |
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I¡¯m envisioning the green plastic/rubber hoods we had on the old Tektronix
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oscilloscopes... the ones that were shaped to fit tightly against your face around your eyes... Nowadays the test equipment is smaller than the scope hood ! On Mon, Mar 1, 2021 at 8:54 AM Kent Borg <kentborg-nanovna@...> wrote:
The NanoVNA is great, among various reasons, because it is so small and |
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I am thinking that, short of using a 3D printer to create a hood, a small box maybe twice the length and breadth of the nanoVNA that opens by the top lifting off, hinged at the back and with flaps that tuck into the sides of the box when closed would work if spray painted flat black. I think I might havevone of those lying around.
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DaveD On Mar 1, 2021, at 11:59, Dave Fugleberg <dave.w0zf@...> wrote: |
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That¡¯s a good idea. If one could find one of those Tektronix ¡®scope hoods that had the right dimensions so that the nanoVNA could be ¡°tucked¡± into the hood such that it would fit tightly towards the narrow end of the hood might work quite nicely.
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DaveD On Mar 1, 2021, at 11:59, Dave Fugleberg <dave.w0zf@...> wrote: |
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How about using a piece of privacy glass/plastic - the type that allows you to see the display straight-on?
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I think it would block out light from the side.? Of course, it would be useless if the sun was behind you.... On Monday, March 1, 2021, 9:54:51 a.m. EST, Kent Borg <kentborg-nanovna@...> wrote:
The NanoVNA is great, among various reasons, because it is so small and light (and inexpensive if damaged) and great for use in the field! Otherwise known as "outside", where there is often bright light, which can make it hard to see the screen. Any suggestions for making a sun shield? This weekend I grabbed a handy piece of light cardboard and cut into pieces that I then taped together to make a rectangular tube. It works sort of¡I need a darker cardboard, and it sometimes triggers the touch screen. Anyone with experience or advice? Thanks, -kb |
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Hmmm...I¡¯ve had to use those at work where my cubicle let sunlight impinge on my monitor. They work pretty well particularly if the sun is behind one and shining directly onto the screen.
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I wonder if soneone makes ¡°little¡± ones? DaveD On Mar 1, 2021, at 12:38, Larry Rothman <nlroth@...> wrote: |
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On 3/1/21 9:38 AM, Larry Rothman wrote:
How about using a piece of privacy glass/plastic - the type that allows you to see the display straight-on?There's two kinds of these - one is little tiny louvers (Light Control Film), the other is a circular polarizer (the reflection flips the polarization, so it gets blocked on the way back out). I'm not sure how the CP ones would work on a LCD display (since the light from the display is polarized). (I'm looking into this for another application, so I've just started researching it) |
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Speaking of which - I saw a Hack-a-day article a few years ago where someone actually removed to top polarized surface of an LCD screen (very carefully) and made what looked like glasses out of the material.
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Since the display panel no longer had the top polarizing layer - no one could read the display without wearing/looking-through the polarized material. It was touted as a privacy project. Look here: On Monday, March 1, 2021, 2:03:08 p.m. EST, Jim Lux <jim@...> wrote:
On 3/1/21 9:38 AM, Larry Rothman wrote: ? How about using a piece of privacy glass/plastic - the type that allows you to see the display straight-on?There's two kinds of these - one is little tiny louvers (Light Control Film), the other is a circular polarizer (the reflection flips the polarization, so it gets blocked on the way back out). I'm not sure how the CP ones would work on a LCD display (since the light from the display is polarized). (I'm looking into this for another application, so I've just started researching it) |
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Good point and an argument for using the guitar pick style of stylus.
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DaveD On Mar 1, 2021, at 21:31, n5kzw <n5kzw@...> wrote: |
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I had the same problem, and after trying many times, finally added a NanoVNA-F to my test instrument collection. It's much better outdoors, but still not perfect. And it's more expensive.
Indoors, I usually pull out the small -H because it's handier, and my indoor workspace/hamshack "bench" is small and crowded. -- Doug, K8RFT |
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I also had the same problem ... when I am outside I solved it in a little bit strange and somewhat complicated way, using the NanoVNA as if it were a photo plate camera of other times.
When I do the measurements outside I fix the NanoVNA to a photo tripod and than I cover my head and the NanoVNA with a dark cloth. It's the only way that worked for me to see the screen perfectly when I'm outside and it's sunny bye Tony |
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On 3/4/21 4:24 AM, antonino.miuccio@... wrote:
I cover my head and the NanoVNA with a dark cloth.Interesting. In my current packaging of portable stuff I have my KX2 transceiver wrapped in a cloth to give it a little bit more protection. That cloth might be (or maybe could be) big enough and dark enough to help shield the sun. Thanks for the idea, -kb |
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Googling for "drone display sunshade" finds all kinds of things that could be pressed in to use with the NanoVNA.
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The same search on eBay finds a plethora of likely options. Chris G8IPN On 04/03/2021 15:50, Kent Borg wrote:
On 3/4/21 4:24 AM, antonino.miuccio@... wrote:I cover my head and the NanoVNA with a dark cloth.Interesting. |
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