Chapter 14
Couch Pet-ato
In This Chapter
Looking over the schematic
Laying down the parts list
Breadboarding the Couch Pet-ato circuit
Installing the breadboard and components in the case
Sounding off!
Y
ou arrive home from a fast-paced game of racquetball, eager to grab a
bag of chips and a cold can of soda, and then just veg out on your
couch. As you walk in the front door, though, what do you find but your 30-
pound cat, Reggie, spread out on the couch. Adding insult to injury, he’s
purring loudly — and shedding to beat the band.Want to be saved from this annoying scenario forever after? That’s what this
chapter is all about: using a vibration/tilt switch sensor in a gadget that will
sound off if Reggie (or Fluffy or Rover) so much as lays his paws on your
furniture.