Looking to create a simple circuit

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SDRandy

Member - Posts: 15

Joined: June 28, 2002

Location: United States

Posted: October 24, 2006 at 7:57 PM / IP Logged

Im looking to create a simple circuit to enable a very basic form of passive locking. Has anyone done something similar to this? Obviously, any help, suggestions or comments is appreciated.

Input1 = Doors or interior light

Input2 = Accessory power

Output = Door lock

1. Wait for Input1 == HIGH (Wait for any door to be opened)

2. Wait for Input1 == LOW (Wait for all doors to be close)

3. Wait 30 seconds.

If during 30 secs, Input1 = HIGH, GOTO 2 (Door is again opened)

If during 30 secs, Input2 = HIGH, GOTO 1 (Key is turned)

4. Pulse Output (Lock all doors)

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Big Dog

Gold - Posts: 1,265

This member consistently provides reliable information

Joined: May 02, 2002

Location: Quebec, Canada

Posted: November 01, 2006 at 3:33 PM / IP Logged

Thanks for the challenge!

Here's what I came up with. I didn't have time to build a prototype but if I didn't miss something, it'll do what you ask.

It's built using common parts which should be around five bucks and change.

Looking to create a simple circuit -- posted image.

Prepare your future. It wasn't the lack of stones that killed the stone age.

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Looking to create a simple circuit

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