These days, most of us have a smartphone. They are so commonplace that we rarely stop to consider how amazing they truly are.

For those starting out in Arduino, there are tons of resources to get better acquainted with the community and the types of projects you can tinker with.

This paper shredder bin monitor is an easy Arduino project for beginners to get into. It uses an ultrasonic sensor, which is placed inside the bin, to detect the trash level.