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A comment on Mars Helicopter successfully completed its second flight. Parent comment

Re:Mars Helicopter successfully completed its second flight by hoseja on Friday April 23, 2021 @06:13AM (#26913033)
Is that kind of like optical mouse sensor?
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Re:Mars Helicopter successfully completed its second flight by NovemberWhiskey on Friday April 23, 2021 @02:02PM (#26917401)
Yes it is! Obviously it's a slightly harder problem if you don't know the distance from the surface and you can't provide your own illumination.
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