In this fourth installment, endow your Desktop Pal with more sensors to increase its functionality. You’ll add a second ultrasonic sensor to enable your Pal to have a kind of “stereo” vision; a passive infrared (PIR) sensor to detect nearby motion, and even a “squawkbox”, to give your Desktop Pal a rudimentary sound effects – also helpful for audible feedback during development.
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/arduino-powered-desktop-pal-lesson-4-adding-stereo-ultrasonic-vision-and-passive-infrared-sensing
