topguy wrote:> Would it be necessary to rotate it with motors should I want to detect 360 degrees surroundings?
That is the same for Sonar, Radar or Laser, they all just detect distance in a narrow beam, you will have to move the beam to sample the sectors/areas you are interested in.
I'm curious about which scale you are planning to do 3D maping on, room ? field ? valley ?
Measuring using radar I believe is only good for objects with high density, sound and light will bounce off most walls but radio waves will go straight through plaster and wood.
Ahh... I see... I forgot to consider the structure types we would be sensing...
In general, probably sensing anything from concrete to plastic, plaster, wood and even metal.
As for the environment, we would be mapping places along the lines of a corridor or room to a hall (at max)? Indoor usage essentially.
So I believe I would be using something like this: http://www.lightware.co.za/shop/en/lase ... rf-01.html
which is a laser rangefinder. (As aTao recommended)
I can't seem to find anyone who has used it with a raspberry pi (without an additional Arduino circuit)....
Seeing as to how narrow the beam is for laser rangefinders, I am also worried about the level of intensity the servo motors have to move at and whether that would affect readings.