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Old 05-13-2006, 11:19 AM
bobterry99 bobterry99 is offline
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Join Date: May 2001
Location: Las Vegas, Atlanta
Posts: 670
I've designed a circuit to automate the rough that I have simulated on a PC with PSPICE. It will be a few days before I get the parts to build it and try it out. Cost: less than $3 for a pair of 3-input NOR gates, some resistors and capacitors.

I will freely share this design with anyone who is interested and would welcome ideas on improvements. However, I don't think I am interested in building completed circuits to sell to others.

Lea: All the I/O is right there at the switch for the top. It's so simple. When the switch to open/close is held long enough for the lamp in the switch to come on, the lamp signal holds the output until the lamp goes off (motion finished). The only part I have not settled on is how to extend the output for an additional 5 to 7 seconds to allow for the windows to close during a closing operation. I'm going to consult a friend on this. My thought is a 555 timer or a simple R-C network.
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