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over 5 years ago from Kirk Castro, Co-Founder at Shepherd Software Inc.
Nintendo uses the infrared motion camera in the right Joy-Con to detect which key is pressed on the piano, presumedly by using a reflective tape on those keys.
Oh that's pretty neat. I had no idea it had those cameras built into the controllers.
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Have feedback?
I dont get how the piano keys are connected to the switch? Anyone know?