- Ever wanted to catch an intruder when they trip a laser beam?
- Want to know how many times your pet (or anything else) is going in and out of your house?
- Someone sneaking into a place they shouldn’t be? - Like to play with lasers and dry ice?
This instructable teaches you how to use a laser pen, mirror, light sensor, and app to detect intruders! You can get alerts via SMS / text message, email, and the web.
Using Valarm with a Yoctopuce “Yocto-Knob” allows you to DIY a powerful, internet + SMS connected, home alarm system, by connecting your Valarm-equipped Android device to switches on windows and doors. And adding a Yocto-Light lets you take your DIY burglar alarm to a whole new level. In this How-To document we show you how to whip up an intruder alert system with a Valarm-equipped Android device, a cheap laser pen, mirror, and a Yoctopuce Yocto-Light external USB sensor