Researchers in Germany have developed a ring laser that tracks Earth's axis movements without telescopes or satellites.

Strictly speaking, a Theremin uses a pair of antennae that act as capacitors in a specific R/C circuit. Looking at ...

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

Arduino Library for the SparkFun SparkFun Ultrasonic Distance Sensor The SparkFun Ultrasonic Distance Sensor - TCT40 (sen-24805) a user-friendly upgrade to the popular HC-SR04 sensor, offers ...

An Arduino library for the I2C mode of ultrasonic distance sensors RCWL-1605, RCWL-1005, and probably HC-SR04P, with some extra info - ftjuh/RCWL_1X05 ...