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  #11  
Old 02-18-2019, 09:00 AM
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Brantel Brantel is offline
 
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Originally Posted by 622BH View Post
I got excited when the possibility of using glasses for "HUD" was published - quickly that morphed into the current technology.
What interests me even more is the advancement to not requiring an android (or iPhone) interface between the data source and the HUD. A direct serial connection would be simplest and (my opinion) preferred.

Brian - you mentioned Dynon systems were being worked on. Does that include the Advance Flight Systems EFIS as well, or are they still in the "next iteration" phase?
Advanced Flight can be added if they have an appropriate data stream output. I did a quick search and could not find any info on their's if it exist.
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Last edited by Brantel : 02-18-2019 at 09:39 AM.
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  #12  
Old 02-18-2019, 09:06 AM
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Saville Saville is offline
 
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Originally Posted by jacoby View Post
Yes, sensors can be added if it morphs into a permanent install. Realistically though, I would think that most people who would embrace a HUD would already have an EFIS onboard and would rather hook it to power + a serial stream vs power + pitot static + OAT. I could be wrong.

The focus and visibility issue is real. I don't know all the details but it has been discussed. There doesn't seem to be a practical solution right now. You can choose between the ~$1k hudly or go off into the certified world and spend a magnitude more.
I wasn't advocating for the Raspberry Pi path - I was simply pointing out that there are ways to add capability to a Pi-based solution.

I agree that if EFIS outputs can be easily accessed and used, that would be the way to go.
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  #13  
Old 02-18-2019, 09:09 AM
jacoby jacoby is offline
 
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Quote:
Originally Posted by 622BH View Post
I got excited when the possibility of using glasses for "HUD" was published - quickly that morphed into the current technology.
What interests me even more is the advancement to not requiring an android (or iPhone) interface between the data source and the HUD. A direct serial connection would be simplest and (my opinion) preferred.

Brian - you mentioned Dynon systems were being worked on. Does that include the Advance Flight Systems EFIS as well, or are they still in the "next iteration" phase?
I, personally, see this as something that will take multiple forms of input and normalize that into a hud output. It could be the onboard serial or a ahrs + gps daughter board or the stratu[sx], et al. The protocols are all simple to parse and map to the HUD.

We have d100, g3x, mgl, and skyview data streams and parsers. If you, or anyone else, wants to capture an AFS data stream and send it to me or Brian, we can attempt to get it parsed and supported. Documentation on the format would be appreciated as well.
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  #14  
Old 02-18-2019, 09:16 AM
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Brantel Brantel is offline
 
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Originally Posted by Saville View Post
As far as I can tell the unsolved problem is a HUD display focused at infinity that does not requires a massive disruption of the instrument panel/glare shield, and which is visible at all Sun angles.

Hudly is a step in the right direction but it's only focused a few feet from the prop and I think I read somewhere that it's not always easily seen at certain Sun angles..
Quote:
Originally Posted by 622BH View Post
I got excited when the possibility of using glasses for "HUD" was published - quickly that morphed into the current technology.
Quote:
Originally Posted by jacoby View Post
The focus and visibility issue is real. I don't know all the details but it has been discussed. There doesn't seem to be a practical solution right now. You can choose between the ~$1k hudly or go off into the certified world and spend a magnitude more.
Most that use the auto based HUD displays seem to comment that the focus to infinity problem is true but ends up not being much of an issue. Visibility in some cases can be compromised as well but reports are that this is also mostly a non issue. Heck even the best EFIS screens and definitely Ipad's have visibility issues in some cases so there are trade-offs all around.

I am no optics expert but I do ponder on why it is so hard to make an inexpensive HUD display focus to infinity? Why is that so? One thing I have learned is that VAF usually has a trained expert on just about everything there is. Someone on here knows....

As for glasses, that is still a possibility if we find some with the right capability. Glasses based attitude displays can be disorienting unless we add some sort of head tracking AHRS to the glasses and this gets complicated fast! All the other info could be added though without too much trouble.

I have a Kivic display on the way to test with. I like the Kivic because it seems to have the best all in one footprint and might work better for a tipup canopy. Will report my experiences with it.
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RV-10, #41942, N?????, Project Sold
---------------------------------------------------------------------
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Lyc. O-360 carbed, HARTZELL BA CS Prop, Dual P-MAGs, Dual Garmin G3X Touch
Track N159SB (KK4LIF)
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Last edited by Brantel : 02-18-2019 at 09:26 AM.
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  #15  
Old 02-18-2019, 09:31 AM
jacoby jacoby is offline
 
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Quote:
Originally Posted by Brantel View Post
I am no optics expert but I do ponder on why it is so hard to make an inexpensive HUD display focus to infinity? Why is that so? One thing I have learned is that VAF usually has a trained expert on just about everything there is. Someone on here knows....
I did a bit of research when this was discussed on the email group and it seems most of the issues come from the light source. Apparently it has to be lined up parallel in all directions (like a laser except bigger). So you need one big array of light so there is no disbursement of the rays when they are reflected back from the glass.

I have no clue how the true infinite focus displays manage this or how to get close enough with COTS hardware. Maybe an array of fiber and LEDs?
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  #16  
Old 02-18-2019, 09:33 AM
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Snowflake Snowflake is offline
 
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Interesting, I hadn't heard of the Kivic. Still, this doesn't look like it'll fit "cleanly" on the glareshield like a Hudly would:

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  #17  
Old 02-18-2019, 09:44 AM
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Problem with the Hudly Classic is that it has been discontinued. The Hudly Wireless has issues like tinted glass and it is flat not curved which causes issues.

Tipups also have different challenges vs sliders or the RV10.
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Check out my RV-10 builder's BLOG
RV-10, #41942, N?????, Project Sold
---------------------------------------------------------------------
RV-7/TU, #72823, N159SB
Lyc. O-360 carbed, HARTZELL BA CS Prop, Dual P-MAGs, Dual Garmin G3X Touch
Track N159SB (KK4LIF)
Like EAA Chapter 1494 on Facebook
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  #18  
Old 02-18-2019, 09:55 AM
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Saville Saville is offline
 
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In general I would think having the image focused at infinity is important for final approaches. You want to flick back and forth between the HUD ("Am I too slow?") and the runway ("are there animals on the runway?" and other important facts like is my spot moving down the windshield, staying in the same spot, or moving up?).

Maybe less of an issue for Cruise.
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  #19  
Old 02-18-2019, 01:22 PM
ops_geek ops_geek is offline
 
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Quote:
Originally Posted by Brantel View Post
(Think back seat display for tandem aircraft).
Bingo. This is something I'm very interested in.
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  #20  
Old 02-18-2019, 02:15 PM
Ron77 Ron77 is offline
 
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Default Hudly Classic

Hudly Classic HUDs is available through GRT.

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