With a standard old HC-SR04 ultrasonic sensor ... As simple as this project may sound like for anyone who has a bunch of these little Arduino-compatible modules lying around and has probably ...

A DIY The Wrench maker has built a smart desk dustbin with an automatic iris-style lid, adding both functionality and a ...

While early scientists and inventors famously underestimated the value of radar, through the lens of history we can see how useful it became. Even though radar uses electromagnetic waves to detect ...

Besides helping you test prototypes of your wacky Arduino ideas ... or another temperature sensor. Likewise, ultrasonic and ...