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    2.2. Make the Gadget

    2.2.1. Parts

    1. Arduino

    2. Breadboard

    3. Mini Sound Sensor microphone (Emartee part number 42021)

    4. 5–10 LEDs, one or more colors, or LED bar display

    5. 220-ohm resistor

    6. 10–15 jumper wires in varied colors

    2.2.2. Breadboard the Circuit

    You can see what the final build looks like in the breadboard view of this circuit in Figure 2-2.


      

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