Idea is to have transmitter and a reciever
Transmitter
Sits on door/wall.
Signal reciever when ever someone opens door or moves in that way
Problem is,
This must very compact.
Must take very less power.
Reciever
Drives an external device after some delay (which must be adjustible)
This also must take less power on standby mode.
Please sujjest how to begin?
Transmitter
Sits on door/wall.
Signal reciever when ever someone opens door or moves in that way
Problem is,
This must very compact.
Must take very less power.
Reciever
Drives an external device after some delay (which must be adjustible)
This also must take less power on standby mode.
Please sujjest how to begin?