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Old 03-22-2011, 09:49 PM   #1
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School project


I need to wire for kids project at school. Using battery and 3 led lights and 2 switches. Picture 3 lights one left, center, and right. I need to have the center light on and when I press switch 1 center light goes out and left light goes on when I release switch left light goes out and center light goes back on. When I press switch 2 center light goes off and right light goes on and when switch is released the right light goes off and center goes back on.

The wiring is not the project but what the lights represent is. Any help would be great or is it too advanced?

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Last edited by Sfdecker; 03-22-2011 at 10:17 PM.
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Old 03-22-2011, 09:56 PM   #2
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Cool...have fun.
Or, are you asking how to do this?

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Last edited by jlmran; 03-22-2011 at 09:59 PM.
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Old 03-22-2011, 10:04 PM   #3
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Yes how would we do this
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Old 03-22-2011, 10:06 PM   #4
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The wiring is not the project but what the lights represent is. Any help would be great or is it too advanced?

Last edited by Sfdecker; 03-22-2011 at 10:17 PM.
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Old 03-22-2011, 10:17 PM   #5
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Assuming you want momentary switches (pushbutton)?

You'll need relays which matches the battery voltage and LEDs. One that has a set of NC contacts and NO contacts. Radio shack might have something but I don't know.

If I was doing it and cost was of little concern, I would use a 12 volt battery with 12 V relays.

Last edited by jlmran; 03-22-2011 at 10:25 PM.
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Old 03-22-2011, 10:20 PM   #6
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Quote:
Originally Posted by Sfdecker View Post
The wiring is not the project but what the lights represent is. Any help would be great or is it too advanced?
too advanced? for your kids or somebody here?

and are you limited to what type of switches you can use?

and are you limited to just those components?

and what do the lights represent?

Last edited by nap; 03-22-2011 at 10:29 PM.
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Old 03-22-2011, 10:33 PM   #7
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Quote:
Originally Posted by nap
and what do the lights represent?
I'm guessing right and wrong, or good and evil, or consequences. The switches represent decisions.
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Old 03-22-2011, 10:36 PM   #8
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Quote:
Originally Posted by jlmran View Post
I'm guessing right and wrong, or good and evil, or consequences. The switches represent decisions.
iI guess he didn't really want a solution. It's not difficult and can be done without relays. I just wanted to know if he had any limitations on the devices before I bothered to draw something up and post it.

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Old 03-22-2011, 11:01 PM   #9
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Are you looking for the Boolean expression for this puzzle?
(B notA OR notB A)(B notC OR notB C) this might be close but I haven't worked with Boolean and its notation for a long time
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Old 03-22-2011, 11:07 PM   #10
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Quote:
Originally Posted by nap

iI guess he didn't really want a solution. It's not difficult and can be done without relays. I just wanted to know if he had any limitations on the devices before I bothered to draw something up and post it.
Yep...he logged off. I've yet to think of a solution w/o a relay. Multiple contact blocks on the switches?

Edit: duh...I grabbed some paper and pencil. No relay needed.

Last edited by jlmran; 03-22-2011 at 11:12 PM.
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Old 03-22-2011, 11:25 PM   #11
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This should work
Attached Thumbnails
School project-switch-logic.jpg  
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Old 03-22-2011, 11:35 PM   #12
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Here is my version...

School project-school-project.jpg

Last edited by jlmran; 03-23-2011 at 12:08 AM.
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Old 03-22-2011, 11:38 PM   #13
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yours is exactly like my drawing in front of me except I connected the right and center lights to battery negative. It didn't work until I did.
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Old 03-22-2011, 11:41 PM   #14
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How the heck does one insert a PDF image into the body of a reply?? Is there a sticky on this?

EDIT: Or any type of image. Can't get it to work.

Last edited by jlmran; 03-22-2011 at 11:47 PM.
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Old 03-22-2011, 11:47 PM   #15
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I don't know. How do you even make a PDF


that was an attempt to alter the file type . Didn't work.

edited to protect the innocent
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File Type: pdf school project extra.pdf (10.5 KB, 51 views)

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Last edited by nap; 03-23-2011 at 12:00 AM.
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