Home Security Lock

Overview:

For our project, we decided to make home security lock. With our smart device, the homeowners no longer have to manually come to the main door to open it for the people. They can now open the door with just a touch of their phone button for safe and secure entry of people. Our prototype consists of two main components: sensor and actuator. Whenever the sensor, which will be attached to the main door, senses movement of a person in front of the door, our device will send an email notification to the homeowner. This will let the owner know that there is someone in the main door. The owner can then open the lock of the door remotely with a touch of a button. With a touch of their phone button, the motor in our device will actuate a mechanism to open the door for the guest. This provides the homeowner safe and easy access to the main door lock remotely from anywhere with their phone. We have used MQTT in conjunction with the MQTT broker to publish message data via the internet. We also used IFTTT in order to use a smartphone app to interface with the microcontroller for controlling our IoT device.

Sensor:

Specifications:

1. The sensor can detect motion up to 20 feet (6 meter).

2.  The static power consumption is less than 0.1 mA. It is small in size and easy to install.

3.  It has repeatability trigger mode.

4.  If the body is in its induction range of activities, the output will go high until the person is out of  range. Then it will turn low.

Actuator: