I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller ... Here is ...

PIR motion sensors use infrared light to detect movement ... This means that they only take up a single data pin on your Arduino board. Counting your own pulse is a thing of the past with ...

He used a stepper motor to rotate the object being scanned, and an Arduino ... The Sharp sensor is cheap and decent, but you’re obviously not going to get amazing accuracy. Still, using the ...

Intrusion Detection Systems (IDS) strive to catch computer system intrusion & utilize by any garnering and analyzing data. Wireless IDSs garner all local wireless transmissions and generate alerts ...

This tutorial will guide you through the process of building a tachometer around an Arduino ... an Infrared beam to measure fan speed. As with last year’s PIC-based tutorial, [Chris] is using ...