mak24

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Re: GPS No Fix
« Reply #30 on: August 02, 2016, 06:03:40 pm »
Thanks kindly.

I was able to find a compiled "next" branch build from this forum and was able to successfully install it on Windows 10 machine (My Ubuntu skills are beginner to intermediate, so will learn to compile builds as I get some more time).

The map seems to be working in "next".  Cannot wait to test the GPS and post a video (I will try to emulate Wagsy's playfulness to the best of my abilities :)).

Thanks for all the help. 
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

mak24

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  • 55
Re: GPS No Fix
« Reply #31 on: August 25, 2016, 02:59:18 am »
Finally got the Naza based GPS.  Connected to Revo.  I now get "No GPS" with the Naza based GPS.  (Both with "next and current 15.09)

Same behavior is seen when connecting the UBX based GPS.  This GPS had shown "GPS No Fix" behavior previously. 

Have I messed up the main and flexi ports?  Is there any way to check Main and Flexi port health? 

Thanks in advance
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

chromvis

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Re: GPS No Fix
« Reply #32 on: August 25, 2016, 05:10:04 am »
If GPS sign in System health screen is not crossed out - you probably have normal communication with GPS. You can look at System tab there are GPS display section on the right and check how many satellites it actually see. In my case NAZA (DJI) do not show any satellites positions only numbers.
BTW you can reasonably check GPS operation only outside and far from tall buildings.
For Naza (DJI protocol) it does no matter if you use Flexi or Main port. With UBlox (two connectors if you use magnetometer) you better use Flexi for magnetometer and Main for GPS.
I personally do not see much sense to use GPS without auxiliary magnetometer - you will not get stable GPS dependent flight (positionHold, VelocityRoam, etc.)

mak24

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  • 55
Re: GPS No Fix
« Reply #33 on: August 25, 2016, 06:56:37 am »
Hi chromvis

Thanks for the prompt reply.  I played around a little bit more.  Think the GPS is not a DJI NAZA compatible.

When I choose DJI in Configuration tab, I get No GPS (See attached).

When I choose UBX, I get no Fix (see attached).

Any ideas?
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

hwh

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  • 1018
Re: GPS No Fix
« Reply #34 on: August 25, 2016, 07:28:25 am »
Post a picture of the board inside the gps and we can tell you if it's a DJI/Naza compatible GPS or not.

mak24

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Re: GPS No Fix
« Reply #35 on: August 25, 2016, 01:58:30 pm »
Attached please see the pics of the 2 GPSs.  Look the same to me.
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

f5soh

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  • 4572
    • LibrePilot
Re: GPS No Fix
« Reply #36 on: August 25, 2016, 02:08:11 pm »
Theses are GPS only.

No Naza gps here for sure, and anyways no Mag chip soldered in both pics.

mak24

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Re: GPS No Fix
« Reply #37 on: August 25, 2016, 02:18:05 pm »
That was a fast response!

I had received both from Banggood.

Here is the link.  One can opt for either a Naze or CC3D
http://www.banggood.com/Mini-Ublox-7M-GPS-Module-for-CC3D-Naze32-Flip32-SP-F3-Flight-Controller-p-1042849.html

I will ask for the refund/replacement.
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

mak24

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  • 55
Re: GPS No Fix
« Reply #38 on: August 25, 2016, 02:55:25 pm »
I am going to order this one

http://www.banggood.com/Ublox-M8N-GPS-Compatible-with-DJI-NAZA-Lite-V1-V2-Flight-Controller-Phantom-1-2-Vision-p-991718.html

Would you be able to tell whether this looks like a good DJ clone with compass/mag?

Thanks in advance
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

hwh

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  • 1018
Re: GPS No Fix
« Reply #39 on: August 25, 2016, 05:21:47 pm »
The last picture in that BG page shows the inside.  That is a clone of the DJI Naza gps and has a mag sensor.  It should work fine with LP.

mak24

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  • 55
Re: GPS No Fix
« Reply #40 on: August 25, 2016, 05:24:55 pm »
Thanks kindly. Will order this one
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

hwh

  • *
  • 1018
Re: GPS No Fix
« Reply #41 on: August 25, 2016, 05:32:07 pm »
For anyone that's interested in the details:

Re: GPS No Fix
« Reply #42 on: August 27, 2016, 06:40:37 pm »
Naming "Naze32" vs. "Naza" is a bit confusing.

If you haven't ordered yet, here is an authentic Naza/DJI GPS for about $43 shipped.
http://www.ebay.com/itm/251862698572

mak24

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  • 55
Re: GPS No Fix
« Reply #43 on: August 27, 2016, 06:46:07 pm »
Thanks kindly.

I had ordered the above already. It is a DJI Naza clone, not Naze 32 clone. The reviews said that it was better than DJI Naza original. Fingers crossed. If it does not work then I will move on to your recommendation.

Once again. Thanks
mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino

mak24

  • **
  • 55
Re: GPS No Fix
« Reply #44 on: October 03, 2016, 03:35:19 am »
OK.  So my S500 quad is now flying (the drunken soldier syndrome is gone)

I am not sure if I should be asking this newbie question about GPS, but everyone in this forum is so willing to help, that I am taking a chance.

I received my NAZA compatible GPS.

I found the NAZA GPS pinout here https://forum.librepilot.org/index.php?topic=902.msg6634#msg6634.  I am planning to rewire this GPS for my revo.  Need some help with that.

Attached are the pictures of my GPS. 

I tried to pull out the connector from the GPS, bit it is stuck quite tightly.  Is it OK that I force it out?  I do not want to damage it.

Second option is that I take the wires out of the current connector  that connects to the FC (second picture) and attach Revo specific connector .  The current connector (picture 2) seems tricky.  Not sure how to take the wires out.  I was thinking of using a blade to cut it or soldering gun to burn the top of the conenctor to get the wires out.

Any advice is appreciated.

mak24

My Quad Build
Alien 450
Emax 25 Amp ESC
2212 980 KV SunnySky motor
10*4.5 APC Props
Revo FC
GCS 16.09 Rhino