I am an extreme newbie (found out about arduino today after mistaking it for android and being corrected by friend).
So let me make it clear that I have close to 0 knowledge about the hardware side, so feel free to correct me if I am wrong.
But anyway, here's my idea, and I'd like to know whether:
1. My idea has any fundamental flaws.
2. It could work.
3. If it could, Arduino board and peripherals I would need
3. If there were a cheaper alternative.
4. Level of difficulty.
So, what I think I want to do is to hook up an Arduino device with:
1. 4 infrared sensors arranged in 2x2 array.
2. A switch.
1. A LCD/LED shield to display stuff.
2. A motor (rotating) connected to lock located on the other side of door (...yeah...)
So here's my idea in a shell:
when button is pressed, the infrared sensors get activated for a period of 8 seconds after it. When the sensors return data, and if our heat signature is found in only one of the 4 sensors for 1 second with 1 second time interval, then the motor rotates once to unlock door by pulling lock when locked, and rotates inversely to lock if entered while unlocked. LCD prints success/faliure and state on pressing button.
1. The sequence in which the sensors are returned should maybe be incremental in a kind of quaternary system so that the password changes everyday?
2. the motor is able to detect whether the room has been locked from the inside and display change of state?
3. Maybe a bluetooth remote to remotely lock room from inside?
Any help is much appreciated.