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When I power up my Telemetry indicates I'm in GPS, just for a second and then it jumps to ATTI and stays there. The GPS switch won't make it go back. This is a new, non-DJI (but advertised as compatible) GPS unit. Do I have a faulty component or is there something I can try to get it working...

Probably because I stupidly forgot to tighten the props my F550 lost a propellor mid flight and spiral down into a very cold freshwater Scottish Loch. Luckily it was only 2 metres down and with some luck I had it on the bank in less than 10 minutes. As it resurfaced one of the ESCs was fizzing...

Trying to fine tune the controls on my pixhawk via mission planner... In the 2 modes I have tested the vertical speed doesn't seem right. In Stabilize if I move the throttle up fill it shoots up like a bullet. And in loiter mode it barely moves up or down at all. How can I tune it so the...

I have 2 x 5000mAh 3s lipos used in series to create 6s power. They are 20C rated. I have made an octo and done a bench test after it crashed from over heated wires. In the test I ran it at mid power which was a current of around 35Amps. After running down the batteries to about 3.4v per cell...

I have an octo diy build which crashed after deans plug melted mid flight. A few months on now and I have rebuilt and done a bench test to repeat the issue. I put an in-line amp meter in to see the current at full power: 85A. This time the deans plugs were ok but the connection popped on the...

..Not sure if that's the correct term for what I'm experiencing. I charge a 3s battery to 12.6v. Once it's off the ground the levels are immediately into the 11.x range. I have a 1st warning beep set on my Tx of 10.6v and 2nd set at 10.4v. Within a couple of minutes I start getting beeps when I...

I have 2 3s lipos in series to create 6s power for an octocopter. Whilst flying I lost all power and found that my positive connection on the deans had got so hot it sunk into the plastic body and disconnected. I had a look at the connection and the gold contact was completely buried. Photo show...

So when I calibrate ESCs it seems there are 2 different objectives and I only see one way of calibrating. Objective 1 - to set brake, battery type etc. - Listen to bleeps and pull stick down when you get to the right bleep - Fine no problem. For Turnigy Multistar hearing the intro bleep and...

I think I have everything correctly set up but when I arm and power up the motors (without props) scream into action. Very sudden and very powerful If the props were on it would shoot through the roof! Where might my problem lie? Pixhawk flight controller. 8 x 45A multistar ESCs 8 x Multistar...

Sorry but reading around and not totally clear how this works.... Moving on from a DJI 550 I'm trying a bigger build using multistar ESCs. I have it all configured but on starting up motors it seems the RPMs are WAY to high. I'm assuming this is where throttle calibration fixes things? I've...

I have connected my pixhawk for the first time to a Mac and ran APM 2.0 to set it up. After loading firmware successfully, I think, there are no further options to move further. The Ardupilot page describes how you can then select 'Mandatory hardware > frame type and so on. I see nothing. Just 2...

I have a 110cm octo frame which I am about to rig with motors and ESCs. I was planning to put the escs right on the very end of the frame as per the picture here. I read elsewhere that having long wires to the ESCs is not good. Distance from ESC to power and controller etc. would be 50cm. It...

I am planning to buy a pixhawk controller which has PPM output. As far as I can understand PPM means a single cable from a flight controller to the Rx unit rather than 8 or more with the kind I have know before - PWM type. My question is - are the any advantages / disadvantages to the single...

I'm looking to do a build and came across eCalc to help select my parts. To get the hang of it I tried entering the details for what I know flies successfully - my DJI 550. The trouble was, none of the settings came up and I can't find the specific details anywhere. As a newbie I have no clue...

Like others I'm also a DJI Naza-2 user looking to try out a pixhawk setup. As I want to go bigger I think pixhawk is more cost effective for Octos and maybe more interesting to learn too. I'm planning to buy in stages but wanted to check all this works.. 1000mm Octo frame 8 x 380Kv motors 8 x...

I have 6 stock DJI props 10" x 3.8 on a F550. I decided I needed some spares and without properly looking into it bought some more 10" blades off eBay. They were in fact 10" x 4.5 type but that didn't mean much to me. I swapped them over and took it for a test flight. The behaviour was very odd...

I have a NAZA 2 which has failsafe feature built in. Now I also have Fr Sky RX/Tx that has its own failsafe feature. Not flown with or set the feature yet. But how does it work if both components have failsafe? To try and answer my own question maybe it is better to have both as a redundancy. If...

I've been using 9x standard Tx / Rx for a while but have now replace with Frsky module to get more reliable range. Swapping it over has thrown up a few issues. 1. When connected top the assistant 1 of the 4 sticks does not move. 2. Continuous fast orange flashing from the Naza. 3. The module...

I'm looking into using my F550 for simple shots at work. I can see this requires qualification, insurance and CAA permissions etc. Regarding the permissions fee it says £113 and renewal is £57. Is this fee for each given location + aircraft for a 1 year period? I wasn't quite sure. Thanks for...

Not sure if this was my fault or a DJI glitch. I was cruising along at about 40m across fields. My OSD said I was 520m away (furthest I've ever been). Suddenly the sticks became unresponsive and the MC continued it's steady flight away from me. About 1 second after losing control it inverted...