My garage door is constantly being left open but various unnamed members of
the family. I'd like to design a wireless device that detects the door
being open and lights an LED in the kitchen if the door is open and turns it
off if it is closed.
The garage is detached and about 30' from the house and there is a brick
veneer wall on the outside of the house. The kitchen is on the other side
of that wall.
I'm thinking I can tap the state of the limit "closed" limit switch on the
garage door and turn on the transmitter if the switch is open, turning on
the LED in the kitchen.
The logic parts will be fairly easy it is transmitter and reciever and
associatd antennas. that will be tricky.
Anyone have any ideas for a project like this.
Well, one thing you could do is bury a cable alongside the footpath,
but what'd be more fun is an in-or-out detector, which, using PIR or
sonar, detects when someone is leaving the garage without having closed
the door, and blares at about 90 dBa, 'CLOSE THE GARAGE DOOR!!!!" ;-)
Good Luck!
Rich
