On Sat, Jul 4, 2009 at 3:29 AM, cdb wrote: > During the times of the Samurai, the Japanese > used to have a Nightingale floor, special floor made of wood, > designed to creak and 'sing' if someone walked on it. > > The target customer being a paraniod Samurai who feared being killed > in his sleep - the floor would wake him or his guards if such a thing > were attempted. > > I wonder if the knowledge exists to build one today? Nowadays we are using PIR sensors and 120dB sirens to make noise when someone is attempt to walk in our house while we are sleeping in upstairs :-) Tamas -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist