Powered by an Arduino Uno, this laser tripwire alarm project ... made up of a laser directed at a light sensor — that's placed somewhere the intruder can easily trigger, such as a door or ...

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.

In this project, we create a joystick-controlled laser by connecting two servos to ... The following is excerpted from the book Arduino Project Handbook: 25 Practical Projects to Get You Started ...

In this fun project an ultrasonic distance sensor is used to detect a “target” (i.e., a person, a cat, a burglar, etc.). The Arduino illuminates (blasts) the target using an inexpensive laser diode ...

[Rodney] put that trait to work by automating the movement of a red laser pointer. After mounting it on a servo motor he got down to work programming an Arduino ... IR proximity sensor to help ...