need help

This is my first build and I have a few ? I'm going with a lens, driver, module 405-445 kit from Aixiz; a 1w- 1.5w A140 blue diode in copper sink; w a C60 host.
1) When wiring, I was going to soilder the diode pins directly to the board (driver) as is typical in most small store bought pointers. In the youtube video they are soildering the case pin to the - pin which goes to the - side of the driver, + pin to the + side of driver, the spring end of the board goes to the neg (-) of the batt; where is the lead out of the +pos that ,I assume goes to the body for the +pos of the batt. And if that is correct, why is the case pin attached to the - if the host body is conducting the + side.
2) What guage wire would be best for the + leg as I know too small annd you fry the wire, too big and you have power drop.
3) Why are some people using 2 cr123 batt (6v) vs. 1 16500 (3.7?v)

1) No, actually you got mixed up polarities of green lasers and common 445nm wirings. Most common is case NEGATIVE for 445nm you are building, so battery negative is going through host, to case pin to negative pin and negative side of the driver.

2) Seriously whatever. Just don't use solid core, use multiple-strand wire and you're good. Just don't use too thick otherwise it's going to be difficult to cram it all inside the host without applying too much pressure via wires to somewhere bad.
3) Because that depends on your driver. If it's a step down driver, (linear or buck), you need more voltage than what diode needs. If it's a boost driver, you need less voltage than what diode needs.


Just a note, you're in the wrong section, you've posted in Rules and Stickies, maybe "General" or "445nm blue" lasers section would be more suitable. Simply for organization sake and if anybody else with same problems as you comes about, they can find the answers more easily. Think of others :beer:

Thanks Hak, but the thread is a year and a half old

Except faheem's post, that's recent. For some reason.