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It sounds like you should have enough separation on equipment. So if this isn't RF/field related, and it didn't happen before FPV, it must be related to weight distribution contributing to loss of control. Quad descent always involves dropping through unstable air -- prop wash, and carrying...

Those motors are rated for 10" props on a 2S lipo. Watch motor heat. Or consider 9" with the 3S, or 10" on a 2S (3S route is better long term). A lower kv motor would be better still. You'll also need servo wires because the KK2 doesn't come with them, and a power distribution board or...

Flying away from people and traffic, quadcopters seem much noisier! There are many slow-fly planes and gliders you might consider for nature photography. You can't loiter the same way you can with a quadcopter, but you can shut the motor off for brief periods and glide which will disturb...

What's your all-up weight? And does your charger do a balanced charge (using the long small connector with all the wires)? It may be you've got a short cell that needs to discharge and some special attention. I know what you mean about the fun of building. I find I can putter on mine for...

It's just as well you decided to abandon simple mode. If you got into FPV, it would have to go anyway. Did you not configure RTL functionality? That might have saved you. Bear in mind that FPV is difficult with a gimbal because you cannot see your quad's attitude until it exceeds the gimbal's...

I agree the Turnigy 9x has an attractive price, but you'll soon become unhappy with the quality and limitations of it. I moved to the Taranis and I wish I'd started there. You can setup/backup your configuration on your computer and download it -- way easier than navigating the menus! I also...

The most likely cause is the FPV transmitter stepping on the controller or receiver. Have you tried leaving the camera and OSD powered and just cutting power to the transmitter? Or is that the Boscam with the integrated transmitter? If so, try flying the payload unpowered to see if it's COG...

I already have the USB-ASP from my attempts at flashing the Turnigy 9x radio, and now the atmel programming adapter is on order from US warehouse (with a bunch of props). I was going to re-build the quad with MultiStar ESCs anyway! It was my first build and I explored a lot of ideas, leaving a...

If the receiver is powered, there should be at least one LED lit up on it, and that LED should indicate whether it is bound to and receiving signal from the radio. I think the Spectrum binds by putting the receiver in bind mode with a jumper wire or plug that comes with it, and holding the...

So ESC calibration turned out to be the step I'd skipped and the issue causing the problem. Then I mis-interpreted the rotate-on-arm state in APM > 3.0 as a malfunction. It's a setting in Mission Planner that I changed from 70 to 20. Now the motors remain stopped when the quad arms. Still...

Yeah, that's the way! I'm also suspecting the Turnigy MultiStar 45amp ESCs are not starting the motor(s) smoothly. I saw a video comparing them (or the 30amp) side by side with SimonK-flashed ESCs. And my Afro ESCs spin the SunnySky motors (on channel 3 -- throttle) smoothly up from a dead...

Doing more research I found there is something called "ESC Calibration". I ran that procedure, and during the last phase, when the controller isn't doing anything I was able to throttle all motors up and down smoothly. Then when I powered the controller off and back on, the motors spun at a...

Let's see, how did today go? I tried putting the APM 2.5.2 controller in my newer frame with all the power leads pulled from the ESC control leads, so only the power module was powering the flight controller. I took it through all the calibrations in Mission Planner, resetting all flight modes...

So, updating... After switching from 4S to 3S, the QuadLugs 610 frame "tested" yesterday, but as with the Turnigy 9X, the Taranis X9D radio appeared to have reversed pitch/elevator. When I reversed that, the aileron seemed to act as pitch (too)! Basically all the controls are screwed up. The...

There are two issues with the Predator frame. The first is minor -- with the center tube design, there are fewer "decks" to actually mount things on than on a box/plate design like the Alien. The second is, the folded-in tube clips are not supported at the ends (if you look closely, you can...

I'm surprised your eBay frame source was so far off on weight! If you stay with 4S-capable motors, your amps won't rise to where a 40a ESC is necessary. I see others flying the Iron Man 650 with Sunnysky X4108S 600kv, MultiStar 610kv, 690kv, etc. with props between 11" & 15", all on 4S. I...

I figured the pre-drive weight of the frame was high actually, but it's a good idea to see how it turns out, and a better idea to try to make it a net-weight figure. It sounds like you are committed to a 4S configuration, and Afro 30a ESCs provide enough power for a wide variety of motors. I'd...

Nice work on eCalc! I'll have to say one failing of both the Alien 560, and Predator 650 frames is prop size. Even an 11" prop overhangs the deck significantly, and a 15" prop on the Alien would chop off that GPS platform. If you find you need to run props larger than 12", you're better off...

Continuing with Banggood, consider the SunnySky X3108S 720kv motors http://www.banggood.com/buy/X3108S.html Those will run on your 30a ESCs, on a 4S lipo and drive 12" props. Start with plastic props. You can graduate to carbon fiber when you stop hitting things and want to do video. Plastic...

Of course, once you've hung a big battery under your quad, hanging a camera gimbals under there too is going to be a challenge. The best camera mount method is to get the whole works out in front of the deck, so you can avoid seeing props or landing gear in your footage. The most common...