Instructables user [1234itouch] recently built a simple laser tripwire alarm that can be mounted virtually anywhere, complete with a keypad for disarming the device.

[Gordon] sent us a tip about this simple laser trip wire system after reading yesterday’s post on a more complicated laser security unit. That build did a lot to provide functionality, such as a ...

How to build your own simple laser trip wire alarm. The author of 'Arduino Project Handbook: 25 Practical Projects' takes us through the steps.

The Arduino powered Laser trip wire system project is currently over on the Kickstarter crowd funding website looking to raise $3,000 pledges to make the jump from concept to production.

That’s when I saw several instructables (Laser Tripwire Alarm, Arduino – Laser Tripwire Alarm System, and Super Easy Laser Tripwire, among others) using a laser tripwire.

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 ...

Wemo launches a new, smaller smart plug, one of our listeners builds a HomeKit-compatible laser tripwire, Eve updates its app and brings forecast triggers to Eve Aqua, and Stephen gets started ...

It works in a home aquarium with toys, but could this laser tripwire alert people to hungry sharks approaching swimmers?