Selection of Mini or Micro Quad Copters for Drone Training

After a long review process three mini drones stand out as potential candidates for indoor and outdoor quad copter drone hands on training these are:

1. Hubsan x4
2. Blade Nano QX
3. Syma XC5

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I finally purchased a Blade Nano QX3D.  This was a small quadcopter for indoor training use.  It proved to be quite difficult to control even though it had S.A.F.E. technology, that theoretically allows it to hover.  The throttle control was very twitchy and it overshot or undershot continuously hitting the ceiling and crashing down on the floor.

Went back to the hobby shop and found that the trim was off and one of the engines came off its mount, which caused the drone to go off kilter.  After it was adjusted the sale person showed me how to trim, the radio sent a loud beep when trim is centred.  Pressing the trim button generates a short beep.  when you hit the centre a long beep is generated.  Having done that and adjusted one of the engine mounts, he hovered the drone over the counter.

Unlike the more expensive drones with GPS the toy drones need to have the throttle and flight direction on the radio adjusted by the pilot continuously.  This is not necessary on drones with GPS on their controllers.

Armed with this information I went out into open ground and test flew the Nano.  It worked.  My initial adjustment on the controls caused wide fluctuations on the drone.  It drifted a lot under my guidance.  It took the second battery, the second five minute flight before I got my adjustments to the level that the drone hovered.