I know this is contradictory to the believe held by many but so far I have not seen any proof that flying over water with VPS on has caused troubles. Whenever reports about drones taking a bath come out, many will quickly jump to the convenient conclusion that the cause is "water confusing the sensors" in some vaguely described ways. The fact is in quite many cases, flight log analysis has proven that the real cause was something else.
I have done a test with my M2P today. Over land and with VPS on, the drone will hesitate after descending to a height of 0.5 meter. You need to confirm your intention to land by holding the throttle stick all the way down for more than one second before the drone will land. Here is the flight log. You can see that I have pulled the stick all the way down momentarily for multiple times but the drone just held it’s altitude :
This is the response of the drone when VPS is off. The drone will keep responding to the throttle control and descend until it touches the ground. If the throttle stick is held all the way down, it will hit the ground hard :
What I found today is that if the 3D camera at the belly cannot see any clearly discernable patterns ( I tested it by covering up the camera lenses with tapes ), then the drone will be more conservative and stop descending at a larger height of 1 meter ( instead of 0.5 ). Over the water, this is the situation so my M2P stopped descending further at 1 meter over the water surface despite repetitive fully-down throttle inputs were applied. Had the VPS been off, I probably will need to use the DJI care service . This is obviously a desirable protection mechanism that helps the drone to stay dry so why turn the VPS off ?
I have done a test with my M2P today. Over land and with VPS on, the drone will hesitate after descending to a height of 0.5 meter. You need to confirm your intention to land by holding the throttle stick all the way down for more than one second before the drone will land. Here is the flight log. You can see that I have pulled the stick all the way down momentarily for multiple times but the drone just held it’s altitude :
This is the response of the drone when VPS is off. The drone will keep responding to the throttle control and descend until it touches the ground. If the throttle stick is held all the way down, it will hit the ground hard :
What I found today is that if the 3D camera at the belly cannot see any clearly discernable patterns ( I tested it by covering up the camera lenses with tapes ), then the drone will be more conservative and stop descending at a larger height of 1 meter ( instead of 0.5 ). Over the water, this is the situation so my M2P stopped descending further at 1 meter over the water surface despite repetitive fully-down throttle inputs were applied. Had the VPS been off, I probably will need to use the DJI care service . This is obviously a desirable protection mechanism that helps the drone to stay dry so why turn the VPS off ?
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