wsemajb Post subject: replacing a photo sensor with RF Posted: Thu
Apr 12, 2007 7:28 pm Captain Joined: Wed Nov 02, 2005
1:50 pm Posts: 11 What is required to replace a small board mounted
photo sensor with an RF trigger? I'm just having fun with a little project
and would like to use something cheap and near at hand like a baby monitor
or walkie-talkie to activate a board that is presently activated by
a board mounted two pin photo sensor. Top wsemajb
Post subject: Posted: Thu Apr 12, 2007 7:28 pm Captain
Joined: Wed Nov 02, 2005 1:50 pm Posts: 11 ...or even a garage
door opener? Top IR Post subject: Posted: Wed
Apr 18, 2007 4:06 pm Site Admin Joined: Mon Jun 27,
2005 2:02 pm Posts: 373 Location: Germany If I understand
you correctly, you will basically need a transmitter and receiver. There
are IC's of this kind operating in the ISM freuqncy bands for example
434MHz, 868MHz, 915MHz etc. The receiver will detect the transmitted
signal and generate a trigger that will operate/enable your circuit.
Hope this helps. Top Kirt Blattenberger
Post subject: Please contact RF CafePosted: Tue May 15, 2007 9:07
am Site Admin Joined: Sun Aug 03, 2003 2:02 pm
Posts: 308 Location: Erie, PA Greetings wsemajb: You have
been selected as a winner in the April 2007 Forum drawing. I sent an
e-mail to your registration address, but have not received a reply yet.
Please contact me at the e-mail on the Contact Us link in the upper
right of the page. I put a notice in the "Win a Free RF Cafe
T-Shirt or Mug" forum. Thanks. _________________ - Kirt Blattenberger
RF Cafe Progenitor & Webmaster
Posted 11/12/2012
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