Sense when garage door is open. Light/LED light turns on?
I have an automatic garage. But sometimes i forget to close it and it stays open all night. Apart from someone being able to steal stuff, it would also allow an intruder into the house while we are asleep!
So what I am looking to do is whenever the door is open, that a light inside the house turns on.
My garage door is a panel lift door. My initial thought was to use alarm sensors. One on the wall and one on the door. If the sensors are not near each other, a light in the house should turn on.
The serial circuit would look something like the following.
GarageDoor > GarageDoorSensor > Less than an inch of air/space > WallFixedSensor > Wire > CentralLogicDeviceWithBattery > Wire > TinyLight/Led.
The hardest bit would be what I have called the CentralLogicDeviceWithBattery. I would like to know what parts i would need and which part connects to which part.