Arduino Combi-button Lock optional Android support

Recently, I decided I would like to attempt to make a passcode lock with my newly acquired Arduino Uno, but all the tutorials I could find made use of a modified keypad, something that not every Tom, Dick and Harry has lying about. I therefore decided to set out and make a version using only things every Arduino user should have in their component box - buttons. Ladies and Gentlemen, I bring to you - the Ar ...

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