We can use them to cut things, create laser light shows, and also as a rangefinder. [Ignas] wrote in to tell us about [Berryjam’s] AMAZING write-up on creating an Arduino based laser rangefinder.

Posted in Arduino Hacks, Laser Hacks Tagged android, iss, object tracking, space station ← 3D Printer Looks Factory Made The Breech Loaded Paintall “Shotgun” → ...

In this project, we create a joystick-controlled laser by connecting two servos to a joystick and using this setup as a pan-and-tilt controller for a laser pointer.

Laser cutters are great DIY tools, but they're pretty expensive. If you'd prefer to build your own, Instructables user SilverJimny shows you how using an Arduino.

To that end La Fabrique DIY has built an automated system powered by an Arduino to endlessly toy with the feline in your life.

There are approximately a zillion DIY laser engraver tutorials on the Web, but of all the homemade builds we've come across, this one from Instructables user MichielD99 is definitely one of the best.