Will HDMI Glasses work with P3A?
- Thread starter JFHughes08088
- Start date
Update, here is my cheap VR viewer modification. This is NOT 3D but 2D. You are looking at one whole screen, just greatly magnified. It is the same VR viewer as ParsnipHysorter shows but has a fabric face cushion and a HooToo brand name. The foam one may be better. I did a lot of playing around with lenses, etc. and seeing how close the phone could be without double vision, etc. I basically took this VR viewer and added a 2" spacer to move the focal distance further out. Then I removed the Google CardBoard VR style lenses and replaced them with 6+ aspherical lenses from a pair of cheap reading glasses. The end result is a headset that is somewhat comfortable and makes my 5.7" Samsung Note 5 look like a big screen TV. I am not sure how to measure FOV but it is really wide. Because I am NOT using the HDMI output I have all the same telemetry of the phone/tablet but in a FPV headset. Yes it looks dorky, but I have about $45.00 invested in this and it works really well and does NOT have those horrible Fresnel lenses that distort everything and add lines, etc. I need reading glasses already and my last mock up used 4+ readers and still looked good. You basically need whatever glasses that will let you see your phone clearly at only ~5" away from your face. Some friends say they still see double but some people can see it just fine. I think if I moved the phone ~6" away that would make it clear for anyone. I was shooting for the smallest size possible. My wife and daughter both watched YouTube videos on it for 10 minutes each the other day. This may also be great for movies etc. I am not sure since I have only worn it for 20 minutes or less at a time. I now fly only by FPV. I can also MiraCast the image to another Android device for friends to view if I am near my Wifi. I am sure there is a way to do it over Bluetooth or WiFi hotspot as well when I am away from home.
P.S. I didn't upload in order but you can see I made a ring of thin plastic as the spacer, then hot glued it in. Just take a piece of thin plastic and used a heat gun to soften it so you can bend it. You could use Styrofoam, cardboard, etc. too.
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Here is another set of optics in it. I decided to make a mount for the lenses that come with the jeweler magnifiers you see on Amazon and eBay. You need the magnifiers with the big round lenses. The magnifiers with the short square lenses won't offer the same FOV. I used a dremel tool to take out some more plastic and then drilled two holes in the top to allow 2 tie straps to hold the bar that the jeweler lenses snap onto. It works great and now different users with different eyesight can now swap between lenses by just snapping a new one in. The sizes are 3.5x 2.5x 2.0x and 1.7x magnification. There is just a little bit of blurring at the far edges of the image but not enough to be a deal killer. This is because the plastic jeweler lenses are not as high quality as true aspheric reading glass lenses. My FOV is very wide (I estimate at least 85-95 degrees) and the image feels very close. It may be wider but I could not calculate since I am using magnification so I cannot truly measure the width of the subject (my phone) as viewed vs. distance, etc. For reference the sides of my screen are mostly peripherally viewed so I find myself looking left and right to check things. It is that wide. I am only 4" from the lens to the phone so that is probably pushing the short distance a bit too. I have used both my Note 5 with 5.7" screen and my Galaxy S4 with 5" screen. The 5" screen was plenty wide and not wide enough to see any blurring at the far edges. I almost like it better since I don't have to look left and right as much. Like I said the blurring was very minimal and you can still see everything just fine. For FPV seekers on a budget this is the way to go IMO. I am past the point of something that works great for me. I am trying to design a low cost homemade solution for anyone that rivals something like Headplay viewers. We Phantom pilots have the advantage/disadvantage of being tied to a phone/tablet device for our video stream. I just think it is waste for us to reinvent the wheel by forgoing what we already have. A self powered, hi resolution, high brightness HD phone with GPS and gyros that easily connects to our remote and shows all the telemetry we need. Most FPV solutions involve buying an expensive lower resolution viewer meant for 5.8ghz pinhole cam drones, then add external batteries, HDMI ports, HDMI cables etc. in addition to the phone tablet we already have just to try and get a good FPV experience. The Litchi app for Cardboard VR is a cool option but honestly after about 5 minutes I realized it is gimmick and not good enough to fly by FPV in my opinion.
As far as the original lenses, I was able to just barely see the edges of the lens cups that extend into the VR box. I was going to pull them and just cut them down a bit since all I really need is the rings that hold the lenses. The deep cups are just light blinders for VR separation which I don't need. I decided to just switch lens style so I could swap lenses in and out easily. Both work just fine but the first style needs reader that fit your vision.
P.S. The last photo showing screen looks distorted. This is the camera view through one lens. The image viewed by your eyes is perfectly square and clear.
As far as the original lenses, I was able to just barely see the edges of the lens cups that extend into the VR box. I was going to pull them and just cut them down a bit since all I really need is the rings that hold the lenses. The deep cups are just light blinders for VR separation which I don't need. I decided to just switch lens style so I could swap lenses in and out easily. Both work just fine but the first style needs reader that fit your vision.
P.S. The last photo showing screen looks distorted. This is the camera view through one lens. The image viewed by your eyes is perfectly square and clear.
The main flaw I still have is that it pushes a bit hard on my face at the bottom since it is more front heavy than it was designed for. I may just widen the bottom pads a bit for more comfort. I already put some stick on 1/2" insulation foam under the existing face cushion to make it thicker.
Dear All,
you know what? I'm still wandering, wondering which 'goggle approach' it's the best for P3A/P. In this path, I have identified 3 main directions ... trying to recap here below:
Please feel free to modify it ...
Cheers
fabbio
you know what? I'm still wandering, wondering which 'goggle approach' it's the best for P3A/P. In this path, I have identified 3 main directions ... trying to recap here below:
1) Zeiss VR ONE (or similar) + smartphone + specific flying app:
PROs: real HD display, big immersive experience, extreme picture quality, cheap (no HDMI daughterboard required), FULL telemetry, neat (not many cables to mess around and no new batteries to depend on), external view (through phone's camera), re-usable (you can use your goggles for other purposes ... as in "pornizer 3D"
), autonomy (you depend on your smartphone's battery), prescription glasses usable, and last but not least... you can touchlessly INTERACT with your app (trough customizable buttons)
CONs: you currently cannot use DJI Pilot app and you're constrained to specific apps designed for these goggles, you don't have a "real" tablet to interact with once you remove your goggles
2) Small-factor goggles (as in Accupix Mybud, Fatsharks, FlySight, etc.):
PROs: size, you can use most apps as DJI Pilot, tablet hooked to RC for full degree of controls
CONs: less immersive experience, you are limited to the scarce DJI telemetry via HDMI, FOV limited, more cables+batteries, no prescription glasses, HDMI daughterboard required
3) Big Players (as in Sony HMZ-T3, HeadPlay):
PROs: HD display (720p), extreme picture quality, FOV, big immersive experience, you can use most apps as DJI Pilot, tablet hooked to RC, reusable (for TV/PC/Consoles, [price (for HeadPlay)]
CONs: size, more cables + batteries, you are limited to the scarce DJI telemetry via HDMI, HDMI daughterboard required, [price (for Sony)]
SO THE WINNER IS ?????PROs: real HD display, big immersive experience, extreme picture quality, cheap (no HDMI daughterboard required), FULL telemetry, neat (not many cables to mess around and no new batteries to depend on), external view (through phone's camera), re-usable (you can use your goggles for other purposes ... as in "pornizer 3D"
), autonomy (you depend on your smartphone's battery), prescription glasses usable, and last but not least... you can touchlessly INTERACT with your app (trough customizable buttons)CONs: you currently cannot use DJI Pilot app and you're constrained to specific apps designed for these goggles, you don't have a "real" tablet to interact with once you remove your goggles
2) Small-factor goggles (as in Accupix Mybud, Fatsharks, FlySight, etc.):
PROs: size, you can use most apps as DJI Pilot, tablet hooked to RC for full degree of controls
CONs: less immersive experience, you are limited to the scarce DJI telemetry via HDMI, FOV limited, more cables+batteries, no prescription glasses, HDMI daughterboard required
3) Big Players (as in Sony HMZ-T3, HeadPlay):
PROs: HD display (720p), extreme picture quality, FOV, big immersive experience, you can use most apps as DJI Pilot, tablet hooked to RC, reusable (for TV/PC/Consoles, [price (for HeadPlay)]
CONs: size, more cables + batteries, you are limited to the scarce DJI telemetry via HDMI, HDMI daughterboard required, [price (for Sony)]
Please feel free to modify it ...
Cheers
fabbio
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Right now i guess i'm goin for mybud..
Some of the cons (no telemetry and having to buy hdmi module) are not a problem cause i use the shield k1 so i can use that transmission port and having the same informations that i have on the tablet on the glasses too.
Do you think mybud would be less immersive even if you cover them with rubber and some kind of hood mask?
And again (but still i hvent heard enough from advanced owners): will the 2mbps Vs 10mbps lightbridge difference ruin my fpv experience?
Some of the cons (no telemetry and having to buy hdmi module) are not a problem cause i use the shield k1 so i can use that transmission port and having the same informations that i have on the tablet on the glasses too.
Do you think mybud would be less immersive even if you cover them with rubber and some kind of hood mask?
And again (but still i hvent heard enough from advanced owners): will the 2mbps Vs 10mbps lightbridge difference ruin my fpv experience?
I have not used HDMI out because I don't have it but I have read that 2mb vs 10mb makes a big difference. I am probably going to upgrade my P3A to P3P because of it. If you are using a Shield K1 then you won't have that issue since you are mirroring what you already have on the tablet right?
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Well, i guess i'm gonna have it anyway cause the "bottleneck" is the transmission between the bird and the controller, so whats's showed on my shield and then eventually on my fpv glasses would be already compressed or low quality.
I read some time ago of a guy flyin with p3a and using glasses and he was pretty happy with it... I realize i'm wishing to hear all the p3 advanced guys telling me that their fpv experience with glasses is really cool and without any problems..
I read some time ago of a guy flyin with p3a and using glasses and he was pretty happy with it... I realize i'm wishing to hear all the p3 advanced guys telling me that their fpv experience with glasses is really cool and without any problems..
alokbhargava
Premium Pilot
Let's be happy with what we have today, things will definitely improve in times to come. I remember we used to crave for a goggle sometime back. Transmission was poor 480p 4X3. We now have at least 720p with P3. It's good enough to get you a great experience with current technology. I have P3A and enjoy it.
Please see what you can achieve best with your $$$. There are people who are thrilled with home made goggles and there are who are not even satisfied with available current technology. I'm sure things will improve as demand and expectations grow. We need to have patience. If you are thinking of 4K goggles for great immersive experience, better dream of sitting on a drone and flying.
Please see what you can achieve best with your $$$. There are people who are thrilled with home made goggles and there are who are not even satisfied with available current technology. I'm sure things will improve as demand and expectations grow. We need to have patience. If you are thinking of 4K goggles for great immersive experience, better dream of sitting on a drone and flying.
I think the best option for P3A users like me is probably viewing what comes on your phone/tablet from USB since it seems we got crippled on the HDMI out option due to 2mb limit. That is why I have been working on a good phone FPV viewer experience without the distorted Fresnel lenses. It works pretty good IMO and I can see all telemetry. Since buying an HDMI out board won't yield better quality for P3A I am holding off on it.
alokbhargava
Premium Pilot
Yes you are right. Only difference would be in telemetry data. Picture would be the same.
Yes, sorry for not clarifying. I meant I don't see an advantage to buying the $99 HDMI out board since I would actually have the same image with less telemetry. If I upgrade my camera to 4K then I will probably want it.
Is there any way to have both the tablet and hdmi FPV work at the same time?
I ask because I'd like to fly the drone with my tablet and see what's going on while having my friend/spouse/child view FPV.
When I connect my headplay FPV unit, the tablet video turns off.
I ask because I'd like to fly the drone with my tablet and see what's going on while having my friend/spouse/child view FPV.
When I connect my headplay FPV unit, the tablet video turns off.
alokbhargava
Premium Pilot
alokbhargava
Premium Pilot
