I-TripleLocked

Inspiration

We wanted to build a lock that didn't need keys, codes, or fingerprints. Just a simple hand gesture. That idea became I-TripleLocked — a safe that unlocks when you wave your hand in front of it.

What it does

I-TripleLocked is a gesture-controlled security container. When the mechanical locking system is housed inside its custom enclosure, it uses an active motion sensor to detect user presence. A simple wave of a hand in front of the container instantly toggles the system, triggering the mechanical lock to smoothly engage or disengage. It delivers a completely touchless, reactive physical security solution for localized storage.

How we built it

Code: We used an Arduino microcontroller programmed in C++ to manage the system's state logic, read sensor data, and control the lock's actuator.

Mechanics: We integrated a motion sensor with a mechanical lock mechanism, writing logic to ensure crisp, reliable transitions between states.

Structure: To hold everything together and create a functional testing environment on a student budget, we used rapid-prototyping techniques to build a custom box out of structural cardboard and straws.

Challenges we ran into

Getting the sensor to detect waves correctly without false triggers
Making sure the servo had enough torque to operate the latch smoothly
Positioning the sensor so it reliably catches the wave every time

Accomplishments that we're proud of

Translating digital sensor data into reliable physical motion via clean, lightweight C++ code.

Building a fully functional, highly interactive hardware prototype within a single quarter.

Successfully implementing a touchless interface that feels intuitive and satisfying to use.

What we learned

We learned how to turn sensor data into physical actions using a servo
We learned how simple components can work together to build something functional and creative