I plan on buying a pair and am saving for them now.

I’m in the market for new goggles..I have the hd-z system.. but havnt installed it. Honestly, I wanted to get more stick time under my belt..I’m not sure how the durability is on the RXs .. especially since I have an original 500mw.

For anyone who is planning to also use the HDZero goggles for analog, just be aware that due to the real-time de-interlacing that Carl has developed which removes vertical jitter for a smoother mage and gives improved diagonal line resolution (i.e. less stair-stepping of the image), the side-effect of doing this is that you get up/down jittering of OSD elements on the screen instead. This is caused by the MAX7456 OSD chip on the FC which was designed for use with the original interlacing mechanism used on other analogue goggles whereby it tries to compensate for the known vertical jitter of the video image in order to prevent the OSD from jittering, so when the vertical video image jitter is removed (which is what the HDZero goggles hardware is doing) you then end up with jitter of the OSD instead.

As the problem is a hardware induced issue there is nothing Carl can do about it and there are no workarounds other than switching off the OSD. So, anyone using the HDZero goggles with an analog module will just have to put up with jittery OSD. It may not be noticeable to some pilots but just keep it in mind.

Ryan Quellet went over the issue and explained it in his recent video -> https://youtu.be/G2vh3V18nVg?t=423

(01-Oct-2022, 11:26 AM)SnowLeopardFPV Wrote: For anyone who is planning to also use the HDZero goggles for analog, just be aware that due to the real-time de-interlacing that Carl has developed which removes vertical jitter for a smoother mage and gives improved diagonal line resolution (i.e. less stair-stepping of the image), the side-effect of doing this is that you get up/down jittering of OSD elements on the screen instead. This is caused by the MAX7456 OSD chip on the FC which was designed for use with the original interlacing mechanism used on other analogue goggles whereby it tries to compensate for the known vertical jitter of the video image in order to prevent the OSD from jittering, so when the vertical video image jitter is removed (which is what the HDZero goggles hardware is doing) you then end up with jitter of the OSD instead.

As the problem is a hardware induced issue there is nothing Carl can do about it and there are no workarounds other than switching off the OSD. So, anyone using the HDZero goggles with an analog module will just have to put up with jittery OSD. It may not be noticeable to some pilots but just keep it in mind.

Ryan Quellet went over the issue and explained it in his recent video -> https://youtu.be/G2vh3V18nVg?t=423

  
 I’m glad you brought that up for I heard Ryan and JB mention it but briefly.
 The OSD is something I use and value.
  I’m curious if it’s just betaflight OSD or if there’s any FC with different chip to eliminate jitters?
 I have seen a pattern with HDZero electronics and so far they have been making a V2 almost immediately after V1.
 
 
  A HDZero V2 goggle would fit the past pattern.

(01-Oct-2022, 02:26 PM)Rob3ddd Wrote:   
 I’m glad you brought that up for I heard Ryan and JB mention it but briefly.
 The OSD is something I use and value.
  I’m curious if it’s just betaflight OSD or if there’s any FC with different chip to eliminate jitters?
 I have seen a pattern with HDZero electronics and so far they have been making a V2 almost immediately after V1.

The OSD jitter issue is caused by the MAX7456 OSD chip (and the AT7456 clone of the same chip) which has been designed to work with traditional de-interlacing techniques. That OSD chip is used on all analog FC's that use character based OSD so there is no way to fix the issue without a hardware change. Maybe Carl can fix or mask the problem with some changes to the hardware in the HDZero goggles themselves but that won't be solved in the HDZero goggles that are going to be released at the end of this year.

Like the jittering of the de-interlaced video image on current analog goggles, the jitter of the OSD on HDZero goggles that are receiving an analog signal may not be noticeable to the naked eye or may just appear as blurring / ghosting og the OSD elements. The only way to find out if it is something that might irritate you is to just try the HDZero goggles with an analog quad.

I'm not sure if the same happens with Pixel OSD but that graphical OSD display technology is only utilised by FrSky / Matek Pixel OSD modules and on some SP Racing FC's.

(02-Oct-2022, 01:48 AM)Rob3ddd Wrote:    SkyZone 04X had the same problem with vertical screen flickering and Carl fixed it for them according to Mad Tech.
  It’s been a while since I watched the video but it turns out Carl has solved many problems with goggles.
   Maybe Ryan can show the OSD movement on YouTube so HDZero purchasers aren’t surprised when they see OSD jumping around if they jump aboard HDZero.
  I use OSD to protect my batteries.
 Hopefully Carl will get the analog OSD resolved before goggles come out.

The video image jittering in the Skyzone SKY04X goggles that Ian (Mad's Tech) mentioned turned out to be nothing to do with those goggles but something that affects all analog goggles, so there was nothing to fix. He published a video on his findings HERE.

Ryan has already demonstrated the jittering OSD issue for the HDZero goggles in his video which I put a link to in post #699 of this thread, and he ezplicitly stated that it's not going to be fixed, certainly not for the upcoming release of the HDZero goggles because all the hardware has already been manufactured and any fix (if even possible) would require a hardware change.

I’m behind on the times and thanks for correcting me on that.
  I’ll take a closer look.
I noticed once the speed is back to 1.0x the flickering isn’t really noticeable.
Is it just DVR footage or live fpv feed in goggles?

(02-Oct-2022, 03:17 AM)Rob3ddd Wrote: I noticed once the speed is back to 1.0x the flickering isn’t really noticeable.
  Is it just DVR footage or live fpv feed in goggles?

The OSD jitter is there in both the live feed and the DVR. While text jitter in the HDZero goggles is going to be more noticeable than de-interlaced video image jitter in other analog goggles (due to the solid colour of OSD text vs blended colours of video image textures), it may not be enough to bother you. You will only know for sure by trying it out yourself.

(02-Oct-2022, 12:36 PM)SnowLeopardFPV Wrote: The OSD jitter is there in both the live feed and the DVR. While text jitter in the HDZero goggles is going to be more noticeable than de-interlaced video image jitter in other analog goggles (due to the solid colour of OSD text vs blended colours of video image textures), it may not be enough to bother you. You will only know for sure by trying it out yourself.

 Thanks for explaining.
 I must admit the HDZero/Divimath testers are really digging in the technology and looking for weaknesses.
  If there is a V2 HDZERO that will be very interesting.

I have not looked at the OSD code in Betaflight or the OSD chip documentation in detail but the shifting OSD elements can probably be worked around by:

- either disabling the OSD elements on every alternating line at the chip (perhaps there is a parameter to do this?)

- modify the Betaflight OSD code to send the OSD elements to the chip differently to counter act what the OSD chip does

I am fairly confident this can be worked around if some smart people have interest in doing this to support better analog de-interlacing.

But I assume since many have moved to digital, analog video related improvements are no longer priority.

For anyone following this thread who didn't already see the other announcement thread, pre-orders of the production version of the HDZero Goggles will be going live in the HDZero Web Shop tomorrow (Thursday, November 10th 2022, 12:00pm noon EST). Full details are in the following thread...

https://intofpv.com/t-hdzero-goggles-pre-order