Thank you very much. I've tested it and I think it is fried. I have been looking at 1.8 amp X-Drive V6 - $19.99 : Cajunlasers Store
and I'm wondering if this will work with the diode I mentioned above.
"This specific version has fixed current at 1.8A for your 445nm laser diode so you don't have to worry about any pots to play with."
Does this hint at not having to be set?