Subscribe to Make Magazine Today!

BeamGreat how to on detecting a laser pointer “break” using a serial port – Chard writes “Ever wanted to make your own laser beam security system. You know the kind they have in the movies, with dozens of lasers and the thief has to limbo through them. Well, I just made a simple laser beam break detector. My computer can now tell when the beam is broken. The parts I used are: 5.6k resistor, photo diode, Digikey part #PDB-V107-ND, serial port from my PC…” Link.


0 Responses to Laser beam detection with a serial port…

Your Thoughts?

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

Related Supplies at Maker Shed