Raspberry Pi: Vocal Intruder Warning System

pi-and-pir_bb

class think has a fun project idea for building a vocal 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.

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