Makers, developers and enthusiasts building distance related projects may be interested to know that the HC-SR04 ultrasonic sonar distance sensor is now available to purchase directly from the ...

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 ...

If you live in a relatively dry climate, you probably don't worry about underwater hazards during the flood season. If you attend Tsukuba University, Japan however — just miles from where the Kinugawa ...

Although the idea of a smart, active water tank is more complex and costlier than its passive counterpart, the active type has clear advantages in terms of energy economy and water delivery. To keep ...