3A Buck / Constant Current / Laser POWER / LED Driver TTL Modulation 12V FOR 1W 2W 3W 405nm 445nm 450nm 520nm RED BLUE GREEN|Integrated Circuits| - AliExpress
TTL Output by Arduino - Project Guidance - Arduino Forum
BLS-Series Software/TTL Controlled LED Controllers with BNC and 2-pin Aero Connectors - Mightex : Mightex