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Pixhawk PX4 No GPS LED

Started by Casper Round, Tuesday,October 10, 2017, 11:31:50

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Casper Round

I';m a DJI user, and very new with Pixhawk etc, chose it because it seems allot cheaper than DJI flight controllers.
I bought a setup from here: https://www.amazon.co.uk/gp/product/B06XSBNXSD/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
Which comes with pretty much everything for the flight controller it seems, I';ve got it running with bare bones at the moment.
Connected GPS, bat monitor, and reciever. I can connect to it in mission planner, and the Transmitter and RX work fine. Motors spin up etc, the only problem I have which might be related to the GPS is that it keeps flying forwards.

I picked it up, carefully and span the motors at half throttle to see whats going on, I move the right stick forwards - This should make the quad tilt forwards however for some reason it keeps tilting on the front right motor. Seeming like its in a + orientation however in mission planner its set to a X frame not a + frame. The GPS and Pixhawk board are both facing forward on the flat surface of the drone. Its only a little 250 type.

The GPS has no LED, and yes its connected correctly to the 12v power and the GPS socket on the Pixhawk board, the first time I powered up via USB the GPS blinked, after installing the firmware in the Mission Planner it no longer has an LED on the GPS. Nor can I see any GPS fix.

Whats going on?

hoverfly

Hard to diagnose remotely, but I would reset level and check motor order.
Reptile folder , alien 500 , F/ Shark Attitudes,
 .Tarot 650, Air-rio Kinetic.. DX9  Various wings and planks.. Taranis x9D+..Mavic..Armattan.. Chameleion...
Massive over draught.....

Casper Round

I';ve reset the level, re-calibrated orientation, checked motor order however still no luck. Now it wont even arm, Battery is fully charged 3S 3000Mah. And it keeps displaying board voltage low??

DarkButterfly

There is a new firmware available which may have some bug fixes for the PX4, I suggest a full erase and re-flash. ~~
Why use 4 motors when you can use 6?

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JonathanOrlan

d correctly to the 12v power and the GPS socket on the Pixhawk board, the first time I powered up via USB the GPS blinked, after installing the firmware in the Mission Planner it no longer has an LED on the

pheasant_plucker

12v to the GPS!
It's usually 3.3 - 5v you have probably cooked it.

Gerry
The man serving me in the canteen said "Look, You can see the face of Jesus in the Margarine" The Asian guy next to me replied "I can't believe it's not Budda"
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UrbanFPV

No light on GPS generally means it can't get a fix.  If it's flashing or solid LED then it's trying to establish a fix or locked.  It's a Ublox GPS and they all do that.  I have that particular GPS on my Wing and it doesn't get a fix indoors very well.  I'd take it outside with a good clear view of the sky.

The Pixhawk central light should also turn green once it's got a lock and home position.
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