(OKay i just typed a huge replay and it messed up
now i got to type it again)
Well Theres many flashlights out there that you can use like these here...
http://www.laserpointerforums.com/forums/YaBB.pl?num=1181635652
http://www.laserpointerforums.com/forums/YaBB.pl?num=1186966870
If you dont like those you can put it in your own box and dont have to worry about trying to fit everything into the flaslight, a project box from radioshack would be good just find one that fits, or you could make your own box, i made one out of the metel casing of an old vcr player i took apart. (bending the metel was not fun tho
) Once you get a good box next you want to get a good battery, I prefer rechargable because they save alot of money, these eat batteries like crazy. Some good batteries are 6v or 7.2v ni-mh rechargable racing packs (like the kind used for remote control cars) dont forget the charger too, dont get any one with more voltage or you will have to heatsink the lm317(explained later its in the driver) Next you want to make the circuit for the laser here is one of the easiest and cheapest ones to build only costs about 4 dollors...
http://www.laserpointerforums.com/forums/YaBB.pl?num=1185701612
If you cant find a 100ohm pot or 25ohm or similar ones you can use a resistor, a 5ohm would be good put two 10ohms in parallel (if you dont know what a resistor i would look up on then and schematics on google and learn how to read them, it will help alot to build the driver) Or if you want to give it a little less power but be safer you can put two 1ohms in parallel then put them in series with the 5ohm giving you 5.5ohm and less current going to it.
If you bought the aixis and diode sperealty, like its not put in it already heres how you do that...
http://www.laserpointerforums.com/forums/YaBB.pl?num=1190209066
Look at the third post it is a good picture on how to install it.
Heres the final step, you need to get a tantalum capacitor (they absorb spikes faster then electrolytic) a 47uf 20v or higher would be perfect and make sure you solder it right onto the diode because if it disconects and reconects while still on it will kill the diode. But dont think about not including it because its still alot better to have it then not to. Then you basicly just solder the wires from the ld onto the circuit and put it in the box and your done. Oh and i forgot to include if you have a multimetter make sure you check the circuit before you attache the ld (laserdiode) to it. The voltage should be around 6v without a load and to put a load you can put about 4leds in parallel on it and you should get around 3v to it.
When you first turn it on your wondering if it will work and when it does its awsome and the first balloon you pop or match you light is so cool, its just a dot of light but it will ight matches, firworks or pop balloons..amazing.
Enjoy
(Lets hope it works this time..Im gona copy it incase it messes up so i dont have to type it agian
)
....lazer... ;D ;D ;D