So I titled this Y.A LED Flashlight(Yet another LED Flashlight). This was my first time actually using a PC-Board in a project, besides in kits. I am using 5 Blue LEDs, and 4 Green LEDs, making a cool light when turned on. So, just follow along and I hope you can do this properly. Please bear with me, as my digital camera's quality is horrible.

Thanks
Here we go!

Step 1: Materials

Here is what you need:
Soldering Iron
Thin Solder
(1)Battery Clip
(9)LEDs *It is up to you how many you want to use*
(1)3 Volt Power Source
(1)PC-Board from Radioshack

Patience and anger management (both of which I do no have).

Step 2: Study the Circuit

This picture of what the circuit should be was provided to me by TehMuffinator. This is the most vital piece of information you need for this project.

Each circle represents one LED. The positive (the longer lead) goes on the outside, and the smaller of the two leads (-) faces the inside.

Please note that the leads stay in a line. If you just randomly place the LEDs, the circuit will not work. (It's common sense), so just keep them in a perfect line.

For when there is the led facing diagonally, you just place the LED diagonally. The leads still stay in line with the others, except they are just facing a different way.

Go to the next step for a video, and more directions for the placement of the LEDs.

Step 3: Placing LEDs on the Board

Here is a video of the way to put your LEDs on the board. I hope you like my sister playing the piano in the background.
(It wasn't planned)

It just basically is a video instead of me explaining it.

If you do not have any flash player installed, I will type out the diretions below:
Alright, as you can see by the drawing in the last step, the first LED is just horizontal. Pick a side on the board and just stick the first one in. You have all the freedom with this one.

Next, you must line up the second LED directly on the same line as the other LED. So, from the (+) lead, if I drew a line between the two, it will be perfectly straight. Eventually we will be connection these with either wires or solder. For now, just place them in.

Do this all the way around the board until you feel the need to stop putting LEDs on the board. You might get thrown off by the diagonal facing LED, but it is the EXACT same concept. Just keep the poles, (+ or -) in the same line as all of the others. It is pretty easy.

Next Step: Lets get ready to solder!

Step 4: Wiring/Soldering It Up

This step can get frustrating and/or confusing. It certanily did for me at first.

What we wan't to do first, is to just solder all of the LEDs in place, so you don't have anything falling out. Make sure though, that the circuit is complete, meaning that the leads stay in a straight line and don't go askew.

In the second picture for this step, I just give an example of how we will wire up the circuit. The wire connects the two LED leads rather than connecting it with solder(which takes alot longer). To make it a little easier, you can fill in the hole next to one of the leads, and place the wire there, as long as the solder of the extra hole touches the solder of the LED lead.

At first, in my pictures, you might see that I filled in the gaps between the LEDs with solder, but that was my mistake for being a noob. Right blow it, you can see the wires.

For some reason my boxes to put on the pictures work off, and on, so just bear with me.

So, what you want to do, is do this all the way around the circuit, connecting all of the (-) leads together, and all of the (+) leads together.

As you could see in the video, I mentioned that you put the battery clip leads, one hole before the first LED leads. Just solder a connection to the hole behind it, and stick the leads in. Black goes on the inside, red goes on the outside.

Step 5: Troubleshooting

We all have problems that go wrong with our projects, so here are some troubleshooting tips.

If the LEDs don't work:
1)Put a multimeter up to the power supply, to make sure that it reads the amount you wish to have put forward.

2)Go through each solder connection to make sure that there is no bridge of solder between the positive and negative solder points/wire points. In other words, if there is any solder that is in contact with both the (+) AND (-) circuit rows, then the LEDs won't work.

3)Make sure that the leads are cut. If the leads are touching eachother ( + touching -), then the leads won't light up.

4)Double check to make sure your circuit looks exactly like the picture in step 2.

5)Make sure that the battery clip is soldered BEFORE all of the LED leads. If it is in front of some, the LEDs behind it, will not work.