On Apr 20, 2012, at 7:45 PM, Jules Richardson wrote:
  On 04/20/2012 02:19 PM, Holm Tiffe wrote:
  There is no Application jou can just build out of
a 555 
 You can use them as an alarm system, scattering them upside-down around the fridge, for
detecting when kids in bare feet sneak downstairs for a midnight snack...  ;-) 
True, but LEGOs are much cheaper. :-)
(at least if you get them in bulk)
- Dave