Tired of forgetting your keys and accidently getting locked out of your house? Well our team created a way to make sure that doesn't happen again. With the use of three argons, an ultrasonic sensor, a button, and the use of the phone's GPS service, we put together a new door-lock system.
The phone publishes an event for when you walk up to your door, where it signals the motor to unlock the door for four minutes, and then automatically lock back up. The ultrasonic sensor senses when the door is being opened, which then sends a notification to your phone that someone is opening your door. A button is also used inside of the house to unlock from it for people on the outside.
Schematic of how the door lock system operates
ultra sonic sensor and circuit
Ultrasonic ranger data for door locking
servo motor and door lock circuit system