Building an Arduino speed detector using IR technology to measure the speed of a moving object is much more cost-effective, ...

[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board, and a convenient software library intended to measure the value of capacitors.

We’re used to Hall effect devices as proximity sensors in ... a UGN 3503U Hall effect device. The circuit is extremely simple, comprising the sensor, an Arduino Nano, and an OLED display.

Explore a small board with sensors, versatile pins, and multiple connectivity options—designed for IoT projects. Read more!