Try an old pastime that never gets old: rolling your own sensors using household objects. [Nematic!] needs a way to sense vibration for ... is using an Arduino Nano in the short build video ...

The Raspberry Pi is a credit card-sized computer capable of running full-fledged Linux distributions such as Raspberry Pi OS, ...

you can just build it a custom sensor with an Arduino Uno. This paper shredder bin monitor is an easy Arduino project for beginners to get into. It uses an ultrasonic sensor, which is placed ...