Instructables
Picture of LED exit sign
I was browsing on allelectronics.com and saw an exit sign on sale..... $3.00. I found that offer irresistible.

Now, for the instructions this is all about......




Note: This was made after this was built so excuse the average photos and steps.
 
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Step 1: Materials and tools needed

Picture of Materials and tools needed
Material:

1.) A light-up exit sign
2.) 4 red 5mm LED's
3.) Small PC bread board
4.) 9v battery clip
5.) 9v battery
6.) ON-OFF switch
7.) Wires( I got mine from CAT- 5 cables)
8.) Resistor (unknown type)


Tools:

1.) Soldering iron
2.) Solder
3.) Screwdriver and pliers

Step 2: Opening the sign

Picture of Opening the sign
After you have your sign, you need to open it. This can be easy or difficult depending on the sign you have.

Step 3: Creating the circuit

Picture of Creating the circuit
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This circuit can be different depending on how you want to wire it, but this is what I used;

I set up a pretty simple LED, resistor, and switch series circuit. To make this, you solder the the 4 LED's together. Make sure to test the LED's and check polarity before soldering.

Note: the resistor can be different depending on what you have.


This is the schematic.

Step 4: Assembly part 1

Picture of Assembly part 1
To assemble this, you first need to find or make a hole for the switch. This can be done with a drill, or another tool of preference. I didn't require this because mine came with a pre-made hole for mounting. It turned out that it's the same size as my switch. After adding the switch, continue to the next step.

Step 5: Assembly part 2

Now you need to install the board. I used electrical tape to attach it to the back panel. You could use hot glue, glue, or another type of tape or adhesive.

After attaching the circuit with a preferred method, Connect the battery and switch if you haven't already.

Step 6: Finally

Picture of Finally
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Test the circuit and close up the sign.

You now have your own personal exit sign for your room, your dorm, or any other anything else.




If you have any comments or questions, I'll be glad to answer.

ry25920
tinker2343 years ago
wow i have one of those at my home got them out of the dump
AndyGadget3 years ago
(You've forgotten to put the battery in the schematic #;¬)
Cool! Just some pointers on using PCBs: The little copper bits around the holes are meant to be used to solder onto (see pic). This provides a cleaner, sturdier finished product. Besides that, this is a nice project!
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ry25920 (author)  Radioactive_Legos5 years ago
I understand what you mean, that's what I tried to do. I just little new to soldering.
I think you were soldering on the wrong side of the board.
IT would have worked like the picture posted by radioactive_legos if you just flipped it around.
Ive used the same type of board, it doesn't have the copper rings it was just blank on both sides. They work fine just a lot cheaper than the copper hole ones.
OOOOOOOOHHH really? Nice. Well I love the project either way "P
twist2b5 years ago
Hey, so you can "fuel" this with AC (plug it in) and it will last forever.... its VERY simple..... would you mid adding it as an option???

http://www.discovercircuits.com/PDF-FILES/acwhiteleds.pdf

Very simple.... lasts forever :)
ry25920 (author)  twist2b5 years ago
This sign had the AC inputs and bulbs built in. I just wanted battery power. ry25920