Hello, I'm picking a list of parts to build an endurance big rig quadcopter. The idea is to lift a Sony A6000 for mapping (nadir, no gimbal). What are your suggestions on my build?
DAYA H4 680 (FPVmodel)
T-Motor 3508 380KV (GetFPV, but currently out of stock)
15x5 propellers (APCprop for plastics (testing), and CF from T-Motor)
Tattu 10,000mAh 6S
Hobbywing Xrotor 40A (I hear these are very dependable for use with Pixhawk)
Pixhawk 2.1 "The Cube" + GPS
Your propulsion system picks look good - i've used 3510 350kv motors (DJI 620S esc & 6S lipo) on pixhawk driven endurance multirotor carrying hard-mounted (vibration damped) Sony A6300.
You could probably get slightly improved efficiency with smaller current oriented ESCs - you'd be fine with a high quality 20A esc based on ecalc specs. Improvements prolly marginal.
I wasn't able to make it work but you may want to try Li-Ion batteries which will give better efficiency, if you can get away with their low C rating (current discharge max is much lower than LiPo). DIY guys built packs using 18650 cells
Daya H4 frame looks pretty okay but I don't have any experience with it. My best frames have been ones we've built ourselves and every off-the-shelf frame we've used has its' ups and downs...
Out of interest - did you build this?
Also looking at DAYA 680, can't find anything 'wrong' with it but chatter in general has also gone quiet about it