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so my cousin bought this, RED LASER MODULE and we cant see to power it... we were using a cr2 or a cr123 battery watever their called, with the negative battery to the spring and positive to the case and made sure we pressed the button while everything was connected. im not completely noob to...

so i bought This module from ebay and was wondering how i can power it. do i just attach a couple AA batteries to the end? also i noticed on mine that the push button didnt seem to be there. the outline of the button was there, but there was no actual rubber button, does this matter. I also...

k so need opinions to my first green laser make. which of these would be better?, and will i need to buy a driver or is it built in like the aixiz ones, also please list some reasons. thx The O-Like module The e-bay module those are the two im comparing. please let me know which one would be...

ok so ive been reading these forums for a couple weeks now and have decided to make my own laser, since i live in Australia and it is illegal to import them. i dont have much experience with lasers, or laser making so i am hoping that maybe someone is willing to help. so far i have bought an...