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The Big Picture: Project Overview.............................................................

When you complete this project, you’ll have what we like to call a Couch

Pet-ato.This device is a box rigged with a vibration sensor and recording/

playback setup. You can record your voice, shouting something like, “Get the

&!@!#@ off the couch!” or a shrill noise of your choosing. When your pet

jumps onto the couch, the vibration sets off the playback.

You can see the finished Couch Pet-ato in Figure 14-1.

So what, exactly, will you be doing in this chapter? The project involves

1. Putting together the electronic circuit


2. Fitting the circuit into a wooden box


3. Attaching switches, a microphone, and a speaker

Scoping Out the Schematic .........................................................................

You have but one breadboard to pull together for this project. Take a look at

the schematic for the board in Figure 14-2.

Figure 14-1:

The final

product:

a Couch

Pet-ato.

344 Part IV: Good Vibrations