High Resolution Wifi Signal Mapping

Didn't realize there could be such a wide variation in signal strength in such a small area. Amazing!
 
I would love to see this in realtime with a wider band. Maybe heatmap the different spectrum bands with different colors. Throw a cell phone in there and watch the fireworks....
 
And THAT is why you have an antenna in your laptop that usually stretches ~1'. Makes sure that it has contact with/intersects multiple "good" zones, and decreases the chances that the antenna only occupies a dead zone.
 
Just further proof that radio waves are black goddamn magic.
 
He needed to go one step further.

Set up a wireless hotspot, record a 3d area. Then physically move the wireless hotspot a set distance away (two wavelengths?) and re-record the 3d area. Compare the two.

Then figure out a way to show this in realtime.
 
evilsofa said:
Well, I'd wonder if the mill was affecting the signal strength as it was scanning (the observer effect).
Click to expand...

Most likely. This interference could be reduced with a simplified machine: A pulley system powered by two stepper motors on the ceiling controlling orthogonal rails (like an etch-a-sketch) carrying a third stepper motor with a spool of thread with the detector device on the end. All devices could be synchronized to carry out their program in unison. Rather than use a camera, simply store the signal strength over time and the 3 stepper motors' movement over time. You end up with point data of x,y,z, and r.

lilbabycat said:
... Compare the two.
Click to expand...

I would like to see this... the interference patterns have a lot to do with the type of antenna and nearby objects. It would be interesting to try lots of scenarios using the automation I mentioned above.
 
I would like to see this with multiple scans over the same area, something a little more controlled. The nerd in me thinks it would be cool to see the (average) shape of the signal.
 
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