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  • Saleem: If you ask in the wanted thread for free fpv goggles and get some then I call you spent git beforehand! Lol
    September 24, 2016, 22:44:46
  • Saleem: Also someone offered him fat sharks,find and reD,if you think it's good deal and you can't get better elsewhere and u got dish then you got possible source for goggles.
    September 24, 2016, 22:44:03
  • Saleem: No,someone asked £30 for some quanum goggles in slayers wanted thread for fpv goggles
    September 24, 2016, 22:42:57
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    September 24, 2016, 22:25:59
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    September 24, 2016, 22:25:16
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    September 24, 2016, 21:56:37
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    September 24, 2016, 21:15:14
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    September 24, 2016, 20:09:50
  • insx: Did you manage some decent flying, Stu?
    September 24, 2016, 19:23:40
  • Saleem: Now it seem a lot better,I think once you arm the quad you will see the pic in your goggles slightly deteriate but before it was fuzzy lines that just got soo fuzzy the pic in goggles was like snow
    September 24, 2016, 17:33:31
  • Saleem: I had a line filter on the cam so I put one on the tx,then the pic went realy dark so I pulled the one on the tx then put it on the cam,then the cam went black pic but I could see the osd,the osd looked s bit crackly,so ended up pulling its power plug.it was on the esc pins/power rail so ended up wiring it direct to the reg 5v on the pdb
    September 24, 2016, 17:31:54
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    September 24, 2016, 17:28:53
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    September 24, 2016, 16:39:02
  • Saleem: Think the shutter needs changing
    September 24, 2016, 16:37:51
  • Saleem: I just nipped out front where I live and flew horizon for a min to check the pic,it seems more stable but can needs adjusting
    September 24, 2016, 16:37:39
  • Saleem: Bad news with the pic though,couldn't see a lot through them
    September 24, 2016, 16:37:00
  • Saleem: I just finished fitting 2205 red bottoms,boy can you tell the difference!
    September 24, 2016, 16:36:37
  • Saleem: But them are better than the older motors inhale,was running 1806,so them are bigger than my dys I just replaced
    September 24, 2016, 16:36:04
  • Stupotsthelot: Just the cheap generic 2204- 2300 that come with the eachine.
    September 24, 2016, 16:34:05
  • Saleem: Think it might be sorted now but can't realy try
    September 24, 2016, 16:27:06
  • Saleem: I can't fly it's far too windy on top that since I shoved red bottoms on the quad the pic I get on goggle gos snowy realy fast,it's like flying in a blizzard
    September 24, 2016, 16:26:46
  • Saleem: What motors are on the quad?
    September 24, 2016, 16:25:14
  • Stupotsthelot: Im all for faster and more reactive.... I just wasn't expecting it. And wow, the power of this thing is really impressive.
    September 24, 2016, 16:06:26
  • Saleem: Yard,that's quad,sorry
    September 24, 2016, 15:50:47
  • Saleem: Even though it's nice to have horizon as its good for beginners the best way to fly is on acro,you have a yard that is basicly free of the flying aids so it feels more natural,also it will fly faster and corner faster!
    September 24, 2016, 15:50:13
  • Stupotsthelot: Very possible.
    September 24, 2016, 15:40:16

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Author Topic: My NAZA GPS is REPAIRED!!  (Read 13352 times)

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Offline Gav

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My NAZA GPS is REPAIRED!!
« on: January 11, 2013, 18:37:30 »
:laugh:As some of you guys know (forum chat) I have been suspicious of my Naza gps since a mid air crash in Dec.  The GPS outer case was wrenched open a little but all I did was just re-set the case with some glue.   It worked on and off after that with it taking forever to get a sat lock. 
I resigned myself to thinking I would just have to buy another.  So opened up the GPS case again (more difficult this time with my added super glue)...noticed the gps antenna itself had 2 hairline cracks running through the ceramic.  Flexed it a little and sure enough the crack was running all the way through basically the antenna was in half.  It was toast.

 Just desoldered the antenna and it fell appart - no chance of picking up anything in that state.   I was thinking of pinching the gps antenna from my wifes car which has an old style navigation system.  You know the type, the little external antenna sits on the dash behind the windscreen... but thought hmmm better not even though it never gets used anymore.   So I ordered a £6.36 inc vat GPS dielectric from RS Components.  collect on Monday.  Well for 6 quid it has to be worth a punt.  Otherwise 100 smackers for another Naza GPS module booohoohho  waaaaahahahaaaaa  >:(   :wallbash:

Will keep you posted if it works.  If it doesn't then I will go sit in a dark room for a long time.

http://uk.rs-online.com/web/p/gps-antennas/7249075/?searchTerm=gps+dielectric&relevancy-data=636F3D3126696E3D4931384E44656661756C74266C753D656E266D6D3D6D61746368616C6C7061727469616C26706D3D5E5C442B5C735C442B2426706F3D3926736E3D592673743D4B4559574F52445F4D554C54495F414C504841267573743D677073206469656C6563747269632673633D592677633D4E4F4E4526




Also here's the reason my gps got smashed

! No longer available

« Last Edit: July 04, 2016, 19:21:06 by Gav »


5.8GHz Skew Planar Wheel FPV Antenna for sale: https://www.facebook.com/FPV.Antenna

Offline johnrs

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Re: My NAZA GPS is defunct
« Reply #1 on: January 11, 2013, 19:03:54 »
be interesting to see if this works
New to Quads but loving it

My YouTube Channel

Techie-Review

Offline KK1W

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Re: My NAZA GPS is defunct
« Reply #2 on: January 11, 2013, 19:27:21 »
Sure looks like it should work. If the SMA connector snaps in I would think you'll be fine. You said it was marginal with the smashed antenna, even if this one isn't perfect it should be a lot better.

Looking though the .pdf spec sheet I noticed a predicted 5 MHz drop in center frequency when put in a radome. Makes me wonder if the ones being sold without a radome would work better if we put them in one. They also specified the gain figures with a 70mm ground plane under the antenna, FWTW.

The antenna bandwidth is pretty wide, so without a radome you'll have lower gain and higher SWR (or return loss). Without the ground plane the gain will probably be lower and the pattern slightly different? I'll have to talk with some of my other radio friends to get up to date on this stuff.

But my money is on it working just great  :smiley:
Jim/KK1W

Offline benchmark

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Re: My NAZA GPS is defunct
« Reply #3 on: January 11, 2013, 20:43:38 »
I will be interested in hearing if it works , i am afraid the naza firmware will not recognize it as firmware in general is written to recognize a particular GPS unit and there are hundred different ones out there , unless you find the exact same gps module that DJI uses.
Let is know the outcome.

Offline Gav

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Re: My NAZA GPS is defunct
« Reply #4 on: January 11, 2013, 21:17:04 »
I'm not sure I follow? 
I'm only replacing the patch antenna on the original module itself.

The exact same patch antenna is available in china but am using the rs components one as a possible  quick fix.

See how it goes.
5.8GHz Skew Planar Wheel FPV Antenna for sale: https://www.facebook.com/FPV.Antenna

Offline Gaza07

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Re: My NAZA GPS is defunct
« Reply #5 on: January 11, 2013, 23:50:20 »
I think it will work as the gps unit its self is still on the naza board your just changing the antenna and im not sure the naza gps which is only a ublox neo 6m can tell if its been changed,
I cant tell from the pictures if there is a small circuit under the antenna the active part ?
if there isnt then your going to just need to remove the active part from the replacement as it must be on the board with the gps module, I hope it all goes well Gav  ~~

Offline benchmark

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Re: My NAZA GPS is defunct
« Reply #6 on: January 12, 2013, 00:56:33 »
I always assumed that the patch antennas were unique for any GPS units own internal algorithms for computing coordinates. Thats what i meant. If that particular algorithm is changed , the firmware cant recognize it. At least that is what immersionrc say about their EzOSD gps unit if its to be replaced. Like i said, i may be wrong or the gps antenna you bought may even be interchangeable with DJIs own model, let us know , i think its a good experiment considering the cheap price.

Offline KK1W

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Re: My NAZA GPS is defunct
« Reply #7 on: January 12, 2013, 01:38:19 »
From looking at the spec sheet it's just a 50 ohm patch antenna. If the connector fits the rest of the NAZA GPS shouldn't be able to tell the difference. That being said it will be good to see confirmation - thanks for being the guinea pig!
Jim/KK1W

Offline Brian

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Re: My NAZA GPS is defunct
« Reply #8 on: January 12, 2013, 03:24:49 »
I hope this works as I'm always crashing!!

Brian :wack0

Offline Gav

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Re: Re: My NAZA GPS is defunct
« Reply #9 on: January 13, 2013, 20:53:34 »
I hope this works ....

Brian :wack0

You and me both mate LOL

Can't wait to collect the antenna and try....  pleeeeeease work 
5.8GHz Skew Planar Wheel FPV Antenna for sale: https://www.facebook.com/FPV.Antenna

Offline Gav

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Re: My NAZA GPS is REPAIRED!!
« Reply #10 on: January 14, 2013, 15:42:03 »
OK earlier I fitted the replacement antenna - went outside and I got a sat lock within 30 seconds.  I could of jumped for joy when I saw the GREEN only flashing light.  Just this minute got back from a test flight too with good gps correction and position hold.  I also initiated a butt clenching failsafe RTH /RTL and it came back.  RESULT!



RS COMPNENTS part number 7249075










« Last Edit: January 14, 2013, 22:00:46 by Gav »
5.8GHz Skew Planar Wheel FPV Antenna for sale: https://www.facebook.com/FPV.Antenna

Offline Gaza07

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Re: My NAZA GPS is REPAIRED!!
« Reply #11 on: January 14, 2013, 15:45:05 »
Excellent news Gav very well done I'm sure this will help others in the future  :bravo:

Offline benchmark

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Re: My NAZA GPS is REPAIRED!!
« Reply #12 on: January 14, 2013, 16:45:37 »
Wow, that is great news, i would have bet it wont work. I gotta save this thread inc ase i have to do likewise one day. Well done again  :beer2:

Offline Gaza07

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Re: My NAZA GPS is REPAIRED!!
« Reply #13 on: January 14, 2013, 17:43:01 »
There is a bookmark feature in the extras bit on the froum that will keep a bookmark to threads you want to keep  ~~

Wow, that is great news, i would have bet it wont work. I gotta save this thread inc ase i have to do likewise one day. Well done again  :beer2:

Offline Brian

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Re: My NAZA GPS is REPAIRED!!
« Reply #14 on: January 14, 2013, 18:05:24 »
That is awesome news mate! I'll be keeping this in my bookmarks in case the same thing happens to me!

Brian :wack0

Offline Smeagol

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Re: My NAZA GPS is REPAIRED!!
« Reply #15 on: January 14, 2013, 21:12:46 »
Well done Gav ... don't need it yet  but maybe ... just maybe ...  :whistling:

Offline Gav

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Re: My NAZA GPS is REPAIRED!!
« Reply #16 on: January 29, 2013, 10:45:49 »
This post is just for reference.  Below is a link to buy an exact gps antenna replacement (albeit pre mounted to a board with pig tail).  If you're ok with 'diy repairs' and don't mind the risk of spending 20 quid or so for a diy fix, then this could also be an option (might be able to tease off the gps dielectric from the small board it is mounted on):

http://www.aliexpress.com/store/product/GPS-ANTENNA-connecting-wiht-module/606369_445451135.html

also hobbyking

http://www.hobbyking.com/hobbyking/store/__31135__NEO_6M_GPS_Module.html

« Last Edit: January 30, 2013, 10:11:46 by Gav »
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Offline realpastaman

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Re: My NAZA GPS is REPAIRED!!
« Reply #17 on: August 14, 2014, 19:47:24 »
Thanks GAV mine is also fixed after a Pile Driver Crash on the GPS!!!!!
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Offline blankers

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Re: My NAZA GPS is REPAIRED!!
« Reply #18 on: February 10, 2015, 23:16:24 »
Gav,

Looking on the RS site they have 4 gps antennas ranging from £1.96 - £5.75 exc vat. They all look pretty much the same. Why did you choose the one you did ?

Would anything be gained by changing the existing 2mm antenna for a 4mm antenna ?
It's bigger so must be better.....right ?

Offline Gav

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Re: My NAZA GPS is REPAIRED!!
« Reply #19 on: February 11, 2015, 07:41:46 »
I went for a replacement as close as I could get, locally, to the smashed one.  I guess checking / comparing the spec of other antenna, will tell you if its better.  Check out
Acquisition & Tracking sensitivity.
:)
http://www.labsat.co.uk/index.php/en/applications/receiver-sensitivity-testing

Cheers
Gav
5.8GHz Skew Planar Wheel FPV Antenna for sale: https://www.facebook.com/FPV.Antenna

Offline realpastaman

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Re: My NAZA GPS is REPAIRED!!
« Reply #20 on: February 11, 2015, 08:14:29 »
Have you seen these? I've just repaired a NAZA lite with one! at $10 thet are a bargin! Great quality and arrived really quickly.

http://www.ant-king.com/homeweb_en/catalog_detail.php?infoscatid=8&ifid=7