Custom Red 16x Mitsubishi Laser 190mW Power, Portable and Rechargeable, Testing and Burning Tricks

Here, I've devised a new 5.6mm 660nm laser using a PWM constant current regulated driver consisting of a RC-type circuit. I'm using a lithium-ion battery as the current source and a regulator and other discrete components.
Made entirely from spare parts and analog electronics.
Technical datasheet: www.richtek.co...
Additional info: en.wikipedia.o...