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Team 852 has had the same problem.
I believe that the sensors emit and track red light (low frequency within the visible spectrum), not infrared. I still need to look at the charts they sent us.
Red light emitted from the sensor reflects very well off of red paper (Red paper is red because it reflects red light, and absorbs a good bit of the other frequencies).
We have not tried it on red carpet, and wonder if anyone else has made such an attempt. Of course, if so, what were the results?
-DB, The Athenian Robotics Collective
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