The HC-SR501 is a Passive Infrared (PIR) motion sensor that is extremely useful. It can be used all by itself or combined with an Arduino or Raspberry Pi
In this article you’ll learn how a PIR sensor works and you’ll build some cool projects using the HC-SR501. You can even make a motion activated camera that will tell you who is stealing your Jelly Beans!
The Google AIY Voice kit allows you to build a natural language recognizer using a Raspberry Pi 3. The kit includes the Voice HAT, a very hackable component which will allow you to not only build your own version of a Google Home device but can also be used to interface with external devices and create your own voice-controlled projects.
In this first of three article about hacking the Google AIY Voice Kit we will build the device and test it out.