Abstract: Vehicle over-speed detection and accident-avoidance system is an Internet of Things (IoT) based system which collects data via sensors such as ultrasonic sensors and alerts the driver. The ...

If you read about Hall effect sensors — the usual way to detect and measure magnetic fields these days — it sounds ...

This easy-to-build walking reindeer can be constructed with only a bow motor, battery, wires, and a few other parts.

Abstract: A high-sensitivity microwave sensor design scheme is proposed in this letter, which is used to measure the permittivity of solid and liquid materials. The proposed sensor is based on double ...