Visual altitude meter

Projects General Guidance
1

Hi, I'm new in Arduino.

I want to build an electronic visual altitude meter. However I want to do a visual one mounted on sport googles, so one eye will have a sort of small transparent screen attached to one of the lenses, and the other eye will be looking directly through the other lens.

I wonder where can I get such transparent LCD screens so I can stick them o a normal glasses lens. Then it will be linked to the main controller (arduino) through cables going down the wrist.

Any help please? thanks.

2

never seen, but how about a micro projector and a white plastic?

http://micro-projector.com/2010/02/laser-technology-a-revolution-in-handheld-projectors/

just thinking out loud :wink:
Rob

3

Any graphical lcd is transparent, but they are all to big for that, you are asking about high tech displays, not consumer ones..

4

you can google for "head up display sport goggles"

https://www.zealoptics.com/transcend/

5

I can't focus that close without my reading glasses anymore!

6

BillHo:
you can google for "head up display sport goggles"
Head-Up Display Brings Ski Goggles Into the Future
https://www.zealoptics.com/transcend/

That's exactly what I want to do...but for skydivers!

When we jump we usually carry a visual hand altimeter and one or more audible altimeters set to buzz at certain altitudes...what if I could have this information visually on front of my eye??? Even more I can add to it a XYZ sensor, acceleration to help when under the canopy starting the landing routine...and plus a GPS and pre-storing the landing zone, with all the previous information, my device could calculate each time the next step to do to get the position (turn left, turn right, flare 20%, flare 50%, etc..)...

But I need a screen to attach to the googles, otherwise it doesn't worth it..

7

By the way...is there anyway to get a altitude sensor for high resolutions..such <10m.. ?

I mean, the last 10m are crucial when landing, the flare maneuver should start at 3m-4m, so it would be nice to have an altimeter that shows this resolution.

8

Use an ultra-sonic distance sensor with long range, there are ones with 6m range, use the ultra-sonic sensor as a low high precision altitude meter and when above 4-5m meters switch to the pressure sensor one.

9

Senso:
Use an ultra-sonic distance sensor with long range, there are ones with 6m range, use the ultra-sonic sensor as a low high precision altitude meter and when above 4-5m meters switch to the pressure sensor one.

I thought of that too, but the sensors must be installed somehow underneath the shoes...and the user must keep them pararel to the ground, otherwise the echoes would be incorrect right?

10

I thought of that too, but the sensors must be installed somehow underneath the shoes...and the user must keep them pararel to the ground, otherwise the echoes would be incorrect right?

And you must not "ping" into a vertical hole or so too, there are horror stories of crashing landers/choppers due to rabbit holes ... (told with a good beer;)

11

hmm
you'll need to have some way of setting the local pressure (QNH)

it is difficult to believe you could use an altimeter (of almost any sort) for the "last 10m"
not if your life depends on it

I'll not be volunteering to beta test this one - I'm out