Have another question for the modders of this thread. :D
I'm trying to make something for my 3D Design class that involves tripping a laser alarm, but instead of the alarm, I want it to trigger something else, for example, like turning on a hairdryer.
Talked to some friends and here's a suggestion they came up with.
1) Get an existing laser alarm system, somehow open it up; and then cut the wire to the alarm.
Problem with this one is I...