As a preview of his latest book, Arduino Project Handbook: 25 Practical Projects to Get You Started, Mark Geddes takes us through the project to create a simple laser trip wire alarm. You've probably ...

You might be interested in a new Arduino ... simply aim the laser directly at one of the four sensors!” So if you think Laser trip wire system is something you would like to build yourself ...

What's a security system without lasers, though? In the video above, MAKE Magazine shows how to create your own laser tripwire for just a few dollars worth of electronics equipment. If you want to ...

[over9k] used his Arduino to set up a laser trip wire. The laser is mounted along ... Video after the break walks through each of these steps. This build is a bit rough around the edges but ...

[Ronnie] built a laser trip wire complete ... to the Arduino. When the laser beam is interrupted, the output voltage drops, the Arduino sees that voltage drop and then turns on the alarm buzzer.