I want reed switch to automate the curtains of my conference room. when the projector screen is pulled down, the curtains should be drawn. I will place a magnet on the lower end of the screen which would trigger the reed switch which in turn should trigger the motor. Is it possible to do so using a reed switch? If yes the please let me know how to make connections and which controller will b e most suitable to use and easy to program.
i do not think the '51 will be fast enough to sense it. a typical '51 will need <= 1us to 'see' int0, if the person that has no idea about what 'enough' is does not believe that 1us is a 'guaranteed' close of the reed switch in this application, I have some swampland in Florida to sell.
of course you can hammer a thumb tack in with an anvil, but even a shoe will do.
Erik