Playing sound (with the MP3 shield) & pressure plates

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Intro

In this tutorial we will be attaching three pressure plates or button to an Arduino. When the pressure plate is activated the Arduino plays a .MP3 file.

Requirements

Arduino Uno (+ usb cable)
Micro SD card (this stores the .MP3 files)
Sparkfun MP3 player shield (available for rent at the Interaction Station)
Pressure plates or buttons (available for rent at the Interaction Station)
An active speaker or headphones
MP3 files