[time-nuts] Toy Radiolocation

[Hendrik Dietrich]

Have a look at Bluetooth low energy. I am working with some nice Modules 
from Bluegiga (BLE112), they just announced a long-range version.
Although they are already very conservative with power and will run for 
a while even with a button cell, a mercury switch (sorry)  could trigger 
them upon movement. You might be able to read a relative signal strength 
(RSSI), but dont expect it to be good.

Hendrik