RGB Laser Projector Is A Jaw-dropping Build | Hackaday
Another Home-built Laser Projector | Hackaday
Building a Laser Show
Victor Cazacov på Twitter: "My DIY laser projector from an old HDD. Presented yesterday at #munich #arduino meetup. More: https://t.co/lXDImfgZct http://t.co/SbxgkMUVgL" / Twitter
Alphanumeric Laser Projector With Arduino : 5 Steps - Instructables