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Taking Things Step by Step.........................................................................

Creating your Couch Pet-ato involves wiring the circuit; installing the speaker,

microphone, battery, switches, and circuit board in the box; and then con-

necting the whole shebang.

Start at the beginning — by wiring the circuit. Follow these steps to build your

Couch Pet-ato circuit (but be sure not to let Rover know what you’re up to).

1. Place the voice chip IC and four terminal blocks on the breadboard,
   as shown in Figure 14-4.

The four terminal blocks shown in this figure will be used to connect

two wires each to various components in the circuit. The wires from

these four terminal blocks go to the battery pack, on/off switch, record

switch, and microphone, respectively.

Speaker Resistor

Battery pack Record switch

Electrolytic capacitor Microphone Tilt switch

Ceramic capacitor On/off switchTerminal blockVoice chip

Figure 14-3:

Key

components.

348 Part IV: Good Vibrations