Hi All,
This is for a simple home project i'm cooking up. I need an optical component that signals high (or low..) as a beam it emits is interrupted (basically, what the had in the old elevators to open the door if somebody interrupted while it was closing). I'de rather have a retroreflector on one side to keep all the wires together so a trasmitter and receiver should be incorporated in one component controlled by a microcontroller. The distance beteeen component and retroreflector should be ~50cm-1m.
A cheap solution would be nice..
Thanks, gilad.