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.

Inside the 3D printed frame of the GlowBlaster is a 5 mW 405 nm module, an Arduino Nano ... 12 mm tactile button which causes the Arduino to fire the laser and sprinkle in a bit of theatrics ...

We've developed numerous Arduino modules for various fields of teaching. Each section is divided into kindergarten through 6th grade and 6th grade through 12th grade. While some of these modules can ...