Apr 10, 2012 #1 A arlo1020 0 Joined Apr 8, 2012 Messages 13 Points 0 what's the best place to buy one for a 50-70 dollar range?
Apr 10, 2012 #2 marianin 0 Joined Mar 29, 2012 Messages 173 Points 0 if you want to build one very cheap make a simple driver wit a lm317 and a resistor of 10 ohms(link) an buy a phr-893t diode from cajunlasers.com(link) is the simplest way (and the ceapest)
if you want to build one very cheap make a simple driver wit a lm317 and a resistor of 10 ohms(link) an buy a phr-893t diode from cajunlasers.com(link) is the simplest way (and the ceapest)
Apr 10, 2012 #3 lman 0 Joined Feb 23, 2012 Messages 298 Points 0 if you want blue star away from 405nm thats a violet color.