5A High Current NDB7A75 3.5-4.5W 445nm Blue Laser Driver 12V Step-Down Constant Current Drive Circuit w/TTL : High Power Burning Laser Pointers,DPSS Laser Diode LD Modules, Kinds of laser products
Laser TTL help - Project Guidance - Arduino Forum
TTL Laser Diode - 5mW 650nm Red - 50KHz Max : ID 1056 : $18.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Adjustable 520nm 1W 1000mW Line Green Laser Diode Module TTL Engraving | eBay