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This is an interface that requires 4 people to blow simultaneously, as hard as they can, in order to initiate the Espionage chain.
It uses a homemade fan attached to a hobby-style DC motor as an induction generator. The Arduino reads that analog pin for a current and if it's over a certain threshold, triggers the send sequence.
Thanks to Syed, Jason, & Yonghoon for testing & Lara for shooting!
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