zlacker

>>belzeb+(OP)
Reminds me of phased array radars. Where they form an array of transmitters into a moveable “beam”

https://en.m.wikipedia.org/wiki/Phased_array

Radar is at its simplistic sensing a pulse out and listening for a return. But then the engineers wanted more.. of course home radar would not be really safe.

Cool project by the way.

>>acomje+i41
It is exactly what it is, except I used ultrasounds (40khz, easy to work with) instead of electromagnetic waves.