Raspberry Pi: Vocal Intruder Warning System Project

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Over on classthink.com I have guest posted a quick tutorial of how you can use a simple module to turn your Raspberry Pi into a intruder warning system.

Thanks to the GPIO pins on the Raspberry Pi, you can attach a lot of external sensors. One such sensor that is excellent for learning with is a Passive Infra Red detector (or PIR). A PIR detects the heat given off from living beings (people, pets etc).
They are normally used to open doors and turn on lights, but what I am going to show you is how you can use a simple £3 module attached to a Raspberry PI and create a fun room entry warning system that will use text to speech to say a warning out loud.

Please pop over and check out the article

http://www.classthink.com/2014/01/12/raspberry-pi-vocal-intruder-warning-system-project/

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