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Re:Now, I can see wifi signals by ChuckMcM on Saturday February 14, 2015 @08:37PM (#9051475)
That is interesting also, but it is 1D only, the light stick's total illuminated length is signal strength. If they re-did that project using RGB LEDs and each LED colored from Red to Blue based on the signal strength at the LED then you would get a 2D plot, And of course if did as the author and photograph an LED at intervals in a 3D space you could do the 3D plotting.

The whole thing has my head buzzing with ideas. Imagine a drone which has a string of RGB LEDs hanging from it making such plot using GPS/6DOF IMU data to allow a computer to reconstruct the scene. Could be very cool indeed.

Re:Now, I can see wifi signals by jrk_ on Sunday February 15, 2015 @07:42AM (#9052452)
I was thinking the same about drones. Take a drone and let it automatically cover an area you're interested in. Maybe following a certain pattern or just random movement.