Kye Shi

Keyless Door Opener

Have you ever wanted to lock your door and not worry about a key?  Kye's design will open the door from the inside based on a secret knock.  The retrofit design is especially useful if you live in a dormitory and are not allowed to change the hardware on the door.

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Kye's designed the electronics using an Arduino Nano and a stepper motor.  Kye designed and 3D printed his own custom retrofit housing for the door knob.