Ha I just bought the Ev800's. Not used em yet. Not been flying long. I have built 2 quads, a diatone G10 diy Im learning on & a ZMR250 that has all the kit on. I'm from UK so with this brexit lark,we expecting price hikes on everything. So i was buying spares each week but came across a problem I thought was with the Tx & built a 2nd quad to see if it persisted. It did.
So I'll start from the beginning in case anyone has the same problem & comes across this post. A bolt came loose on an arm = a 130' drop which in turn ripped a ground wire off the home made pdb. FC was OK & very lucky no short out. So fixed her up even better, only to find after a gyro, esc & accelerometer calibration that I was getting opposite correction, as in, if I held it & tipped forward it would push forward & back push back, left ect.
I took a week off work with perfect flying weather only to land this problem. Well I didn't get to fly all week but someone called RENOV8R on this site. massive thumbs up. Suggested do a default reset on the fc, it worked a treat but by this time I had built the quad I'm pretty much learning on now. The diatone takes a beating for sure. And the zmr I haven't flown much as I have camera & vtx with its own 2S supply all neat tidy, clean ready for when the other one pegs it.
Oh by the way. The mini TS5823 with the 1g camera 5v on a step down, supplied by a 850mah 7.4v lipo. Gives 16 minutes of signal time. Enough for 2 flights at least. & still get my 8-9 minutes off my main battery for flying. Boy do I go on. Breaks over now.