Re: [Paparazzi-devel] LPX530AL Gyro board - would it work?

[Joy Morris]

Please quit sending me these emails.

Joy Morris http://www.imdb.com/name/nm1192340/

-----Original Message-----
From: David Carlson <address@hidden>
To: address@hidden
Sent: Wed, Apr 21, 2010 8:24 am
Subject: Re: [Paparazzi-devel] LPX530AL Gyro board - would it work?


Yes.

And with gyros, you generally get what you pay for.  But I have only 
ever seen a roll gyro used.  I'm not sure if the pitch gyro is actually 
used in the code.  Somebody who knows more than I about the paparazzi 
code will have to answer that.

Buzz


On 04/21/2010 03:09 PM, Rokas Adiklis wrote:
Thanks David. Can I remove the wires from the receiver board and use 
the connector on the adapter board?

And what about the gyros?

Thanks.


On Wed, Apr 21, 2010 at 10:28 AM, David Carlson <address@hidden> 
wrote:

Rokas,

That adapter will allow you to have a backup battery (capacitor) 
attached to the board.  I have two of them and they work just fine.  
This is also the reason that the wires are not very securely fastened.  
There is no way to do it without removing that male adapter.  So that 
just leaves attaching to small resistors and capacitors.  When I return 
I hope to have some of those boards made.

Buzz


On 04/20/2010 10:33 PM, Rokas Adiklis wrote:


Good evening everyone,

first of all - huge thanks for all the work you guys have created! It's 
amazing how professional things can be done in opensource way. I have 
some questions, maybe you could help me out a bit.

I was looking for a cheap gyro, and came up with this one:

http://store.diydrones.com/product_p/br-trigyro-lpx530al.htm

It seems to have analog outputs, and 2.7-3.6V input. I don't have a 
good knowledge in electronics, so I would very much appreciate your 
professional oppinion - would it work with TWOG? As far as I 
understand, I will only be able to use two channels, as I couldn't find 
anything about third axis (YAW) gyro configuration in airframe file. So 
maybe two of these would be a better choice?

http://store.diydrones.com/product_p/br-0005-10.htm

Also, I saw that the recommended gyro (ADXRS613) has sensitivity of 
150deg/s, and the above ones have double of that (300deg/s). How would 
this influence the performance?

And last, but not least - I'm changing my GPS receiver to "LEA-5H with 
Active Sarantel helical" (from CheBuzz). It doesn't have internal 
battery (so it starts up longer), and it came with wires ripped off. 
The latter is not a big problem, but I've found this adapter, that 
might solve both issues:

http://store.diydrones.com/product_p/br-0008-01.htm

Do I get it right - if I attach this adapter to my GPS receiver, it 
would enable it to hotstart, and to have a more convenient cable plug?

I have way more questions left unaswered, but I'll stop for now, as I 
haven't read EVERYTHING yet :) And thanks in advance for your support.

Sincerely,
Rokas Adiklis.



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