Hi, I'm new to Arduino and electronics at all. I want to make a simple project, but I have some questions. It will be very good if someone will make some things clear. Are there sensors that calculate distance between emitter and sensors themselves by radio waves like bluetooth with high precision …

Distance radio sensors (motion tracking)

system September 17, 2012, 10:09pm 3

How can I get relative precise initial position of an object?

Theodolite.

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