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Old Oct 26, 2010, 07:28 PM
FPV Pilot
ttucker's Avatar
United States, OR, Beaverton
Joined Mar 2008
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Poor man's altitude indicator

I've seen some pretty ingenious things invented for helping with FPV flight, bank, pitch and stall indicators, but has anyone come up with a simple altitude indicator that dosen't need to be through an OSD? I'd love a simple and cheap altitude indicator solution I can mount on plane's dash. I guess they're all based on barometric pressure so that means it can't be too homemade? Any ideas out there to share?
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Last edited by ttucker; Oct 26, 2010 at 07:35 PM.
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Old Oct 26, 2010, 07:33 PM
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ashdec87's Avatar
United States, MI, Detroit
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I use/used a bubble level. You can see it pretty well through the camera
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Old Oct 26, 2010, 07:34 PM
FPV Pilot
ttucker's Avatar
United States, OR, Beaverton
Joined Mar 2008
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Yea, I got the bubble level going, I'm looking for altitude solution though.
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Old Oct 26, 2010, 07:42 PM
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ohh I read attitude
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Old Oct 26, 2010, 08:25 PM
FPV Pilot
ttucker's Avatar
United States, OR, Beaverton
Joined Mar 2008
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What are you talking about?
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Old Oct 26, 2010, 08:30 PM
$#|+
mkmkmk13's Avatar
United States, CA, Orange
Joined May 2007
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maybe something like this


http://cgi.ebay.com/Hiking-Digital-A...#ht_6122wt_905
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Old Oct 26, 2010, 10:35 PM
FPV Pilot
ttucker's Avatar
United States, OR, Beaverton
Joined Mar 2008
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Yea, this is excellent except for weight. I think this is around same as a 1800 ma battery pack. Darn.
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Old Oct 27, 2010, 12:17 AM
Expat
Japan
Joined Apr 2010
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Quote:
Originally Posted by ttucker View Post
What are you talking about?
Attitude = position relative to horizon -> bubble level

What are all these other poor man's indicators you're talking about?
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Old Oct 27, 2010, 02:04 AM
The simplest, the better!
pdemon's Avatar
Italy, Europe
Joined Apr 2002
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This may be what you are looking for: http://www.hexpertsystems.com/zlog/
Attitude DIY and Zlog altitude indicators...


FPV equipment testing #1 (2 min 8 sec)
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Old Oct 27, 2010, 02:40 AM
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Joined Feb 2005
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ttucker,

you could try to get the altitude part of this:

http://www.thefind.com/sports/browse...inox-altimeter

It's fairly small and light, if you can find one.

Mlke
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Old Oct 27, 2010, 03:40 AM
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QUIKSILVER's Avatar
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I modded my Zlog

Have a look here:

http://fpv-community.com/forum/showt...highlight=zlog

i used a small round mag glass and made my own dash...

let me know what you think
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Old Oct 27, 2010, 10:26 AM
FPV Pilot
ttucker's Avatar
United States, OR, Beaverton
Joined Mar 2008
351 Posts
Thanks for the info guys. I've seen reference to the Zlog device and thinking about getting one, but is it stand-alone? Is something else required with it to continually display instantaneous altitude? Otherwise it just logs max altitude points during flight, right?

Of course I have the usual wet ball compass (see attached pics) I mounted in my Easy Star nose that, in addition to heading, does a pretty good job of pitch and roll indications, when referencing against the white line around the middle of the ball. I also added the mylar stall indicator. All works pretty good but I'd really like some indication of altitude.
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Old Oct 27, 2010, 11:06 AM
Expat
Japan
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That's a great idea with the ball compass! I 'll try that now.
How does that Mylar stall indicator work exactly?
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Old Oct 27, 2010, 11:09 AM
my karma ranover my dogma
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Edmonton,Canada Eh
Joined Jun 2007
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Quote:
Originally Posted by ttucker View Post
Thanks for the info guys. I've seen reference to the Zlog device and thinking about getting one, but is it stand-alone? Is something else required with it to continually display instantaneous altitude? Otherwise it just logs max altitude points during flight, right?



.............

No, It is stand alone and has a digital readout. Real time updating.

The Z-Log is great!

I have one.
Unfortunately it is out of production...
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Old Oct 27, 2010, 11:22 AM
FPV Pilot
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United States, OR, Beaverton
Joined Mar 2008
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Quote:
Originally Posted by TheNiceGuy View Post
That's a great idea with the ball compass! I 'll try that now.
How does that Mylar stall indicator work exactly?
Yea, I actually saw both ideas on the FPV forum somewhere. Its critical to get a really good quality wet ball. I bought too cheap of one initially and it tended to hang up inside the ball casing, not giving dependable readings. The one I have now (still only $7) moves very smoothly and reliably and is in camera field of view when looking forward in default flight mode.

The mylar stall indicator is so simple its complex. This is simply a piece of thin mylar (most any similar material will work) attached at the trailing edge. When air is moving over it, the strip bends upwards in your field of vew. When air is not moving over it, i.e. near stall, it tucks back down against the nose of plane. Obviously, not good for accurate air speed indicator, but does give simple, quick indication of how close you might be to stall. I haven't fully tested mine yet, and might be somewhat annoying, bouncing around in field of vew, but simple to remove if that is the case. See following clip:
Stall indicator is added. (5 min 55 sec)
.
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