It has a range of 6,45 meters (0..255 inches. Must be 8-bit lol) with 1 inch increments.
So it won't be a real Aliens proximity device. It will just detect stuff with high accuracy.
Also, since it's ultrasonic it won't go through the walls, but it should be great fun building it. Scanning for more objects will be achieved by 4 sensors, each turned on for 50 milliseconds (according to specs so they won't mess each other up since it's kinda bat effect where the waves are reflected back ;)
This also means only 4 objects at a time will be shown. (or 4 distances).
I will show each circle at the middle of each sensor range, as I can't really tell where inside the arc of the wave it was detected.
I will probably exchange the small Sony Ericsson display with a white on green LCD of a larger size.
Sounds like great fun and I can't wait to get started.
Notice how (like a software project) I scale back the original idea to fit into the realm of the possible :)
