HDD laser projector - DIY

This is my first DIY laser projector made from old HDD. As signal for galvos I am using just audio output from PC amplified by TDA8560Q. Laser diode is from DVD burner - LPC-815, so power is approximately 200mW. “Smoke“ is made by spraying glycerol on hot iron. Name of song: W&W - . [Sean Tyas Remix]