S-e-ven
Captain
Flight distance : 5910961 ft
Thailand
Offline
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That could be a vps, which senses ground, but because of no(t enough) light, just a "black carpet".
Any wind, fan blowing?
Without enough light and/or above a very homogen surface, the Spark is "irritated"
Even over some carpet, steady hovering, you pull the carpet slowly, it will follow
There is a video out about this, somewhere.
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