Here is an ultra simple Arduino Night Alarm project wired around a handful of inexpensive and easily available components. One advantage of using Arduino as a security system is the flexibility!

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 ...

Posted in Arduino Hacks, Medical Hacks, The Hackaday Prize Tagged 2020 Hackaday Prize, alarm, coronavirus, COVID, Covid-19, distance sensor, face covering, HC-SR04, intruder ...

The goal of this module is to teach students about the properties of sound and computing distance with an ultrasonic sensor. The program can also be used to measure the relative distance. This module ...

Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic distance sensor, and an Adafruit Wave Shield.

Once you get the alarm set up, it’ll sense movement near the Arduino, snap a picture, then send it over to you using If This Then That. All you’ll need is an Arduino Yún, PIR sensor, a USB ...

A new alarm system is now being developed to provide early detection of possible fire occurrences in the forest. Built with a smoke sensor and a 3G network connection, prototype units of the ...