discostuee
Member
Hi.
My friend wants a sensor on his door so when people enter they trigger the door chime.
I picked up a $8 wireless door bell which has a simple push button on it and uses a mini (23a) 12v battery.
Is there anyway to make this so it produces a sensor line across the door so when someone enters it breaks the sensor and triggers the doorbell?
i have seen them somewhere else where its a reflector plate and a sensor.
Any schematic would be appreciated. Also i do have acccess t bigger power supply / more batteries if needed.
cheers
Stuart
My friend wants a sensor on his door so when people enter they trigger the door chime.
I picked up a $8 wireless door bell which has a simple push button on it and uses a mini (23a) 12v battery.
Is there anyway to make this so it produces a sensor line across the door so when someone enters it breaks the sensor and triggers the doorbell?
i have seen them somewhere else where its a reflector plate and a sensor.
Any schematic would be appreciated. Also i do have acccess t bigger power supply / more batteries if needed.
cheers
Stuart