Re: on off switch

Posted by Chuck on 9/22/2006, 12:55 pm, in reply to "on off switch"
66.110.228.51

This is the old "electric eye". Just use a photocell and light source (laser). This is how automatic doors used to work, before radar and IR sensors...

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Message Thread: on off switch - Dave 1/17/2006, 12:14 pm Re: on off switch - Chuck 9/22/2006, 12:55 pm Re: on off switch - Murali Harikrishnan 1/19/2006, 6:54 am Re: on off switch - rwt 3/13/2006, 8:37 am Re: on off switch - fadsf 3/13/2006, 8:37 am « Back to thread

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