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how long will a cr123a battery at 3.0v or a rcr123a battery at 3.x volts power through a lava micro flexdrive? apparently once the power drops below 2.5v it dies.. so im just wondering how long the battery will last before that occurs

i got this on ebay: http://cgi.ebay.com/3-Watt-CR123-Black-Luxeon-LED-Flashlight-Torch-Battery_W0QQitemZ150261555878QQihZ005QQcategoryZ106988QQssPageNameZWDVWQQrdZ1QQcmdZViewItem took it apart, removed the LED and have negative and positive wires sticking out. i have a multimeter. how do i...

i purchased a 20-30mw 1 watt mxdl design blu ray from jake21 on ebay recently and i was wondering is there a way to make it stronger. he claims its a 803T. all the dirty work of soldering wires to the diode is done for me which is great. what can i do to make stronger?

im sorry but i just got a blu ray with a single-lensed aixiz housing and im not too satisfied with the output the beam spreads out all huge over long distances .. i want a nice compact tight razor sharp dot from far distances.. that would require two lenses in a housing would it not? what type...

anyone have one looks like i missed the group buy above

http://cgi.ebay.com/150mW-405nm-Blue-Violet-blu-ray-Laser-Diode-in-Module_W0QQitemZ180255263366QQihZ008QQcategoryZ42884QQssPageNameZWDVWQQrdZ1QQcmdZViewItem any good ?

I think i may have ruined it when i cleaned it with this microfiber towel... :( i wont know till i test it, but, how likely is it? unless of course they can put up with a little bit of static OK.. would it be the jolt of static electricity from one rubbing their feet on the carpet and touching...

Had to cram the subject in, I managed to get the diode out after.. gasp.. 1 hour of work was my first time.. but turns out having 'helping hands' really would have helped as i do need a third hand.. one to hold the diode assembley and clasp it firmly by its heatsink, one hand to apply solder...

Can a custom made pointer be made so that it can take both types of battery without harming the components of it?

got my geeks.com hd dvd museum artifact today. i want to perform the sacred extraction! can somoene help me with the first steps? i am at the part where ya open it and remove the circuit board

Can a laser be strong enough to nuke a popcorn kernel and make it into it's final fluffy product? or would it basically incinerate?

I know at target they have this little device in the dental care aisle that is a little box where you put your toothbrush inside and it has a ultraviolet light inside of it that sterilizes the germs from your toothbrush will a 405nm laser have this sterilization effect if i shine it on my...

i have a cache of cr123a batteries i need to use. i found the best deals on these pocket micro led flashlights(product description in url)...

just ordered a 803T hd dvd drive from geeks.com im a laser newb. i understand i need to obtain a good driver and such. my first question on this project is - i understand this sled has two diodes, a UV and an IR ideally I'd like to practice with the IR diode first, just to kind of get myself...

since most any pair of sunglasses you can buy for $10+ say they are UV shielded(stickers on the front) will they work as safety glasses for blu-ray lasers at 407nm?