Do you need a last-minute Halloween decoration to scare your friends and trick-or-treaters? Try building a scream box that lets out blood-curdling screams when it's opened!
This guide will show you how to hack a standard-issue Halloween-store fog machine to add lights and reactivity, and also how to use Adafruit IO to control your lights and fog from your smart phone -- from anywhere in the world!
Learn about inputs–electrical signals used to provide information to an Arduino board. We cover digital input with switches and analog input with potentiometers.
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