Secret keylock – with Arduino

I’ve seen many electronic keylocks, but this project is probably unique :)

In a nutshell – Arduino listens to knocking on a door and, if you are knocking with a specific rhythm, then it unlocks the door. Along with this, a simple method of learning the new cipher and it’s finished :)

If someone is interested, the details can be found on ArduinoFun a blog – code, diagrams, etc.

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