The easy method to determine free fall detection with the help of a simple 3-axis accelerometer.

A digital finger sensor to protect against theft.

A beginner project utilising an Arduino and a BME280 sensor capable of giving you 4 environmental readings.

Sunglasses that serve an even more useful purpose than protecting the eyes of the blind. They can help them detect objects in front of them.

Monitor the world's rivers and lakes through a collaborative cloud allowing you to monitor any body of water with a fleet of devices.

Building a rain sensing alarm with Arduino.

This fully functioning Geiger counter was designed after the PKE Meter from the 1980s Ghostbusters movie.

Remote temperature monitor using a Bluetooth module and an NTC thermistor. An Android app made with App Inventor is used to read data.

This is an image processing based fire detection and extinguisher system using Arduino and OpenCV.

Learn how to build a digital weight scale and force gauge with HX711 load cell module and Arduino.

In this project, use the YF-S201 1/2-inch water flow sensor to measure the water flow rate (L/min) and display it on an LCD.

In this article, you'll learn how to develop a simple thermometer using digital temperature sensor with Arduino.

+ LCD/OLED can be used to measure body temperature or to detect movement... in Celsius and Fahrenheit!

It is a miniature counterpart of radio altimeter used on commercial aircrafts to be used with RC aircrafts and multirotors.

It might be the simplest room temperature and humidity - no breadboard attached.

You can close your eyes, but you cannot close your ears.

This smart stick can help blind people walk on the street safely without any help.

There are a lot of Arduino-based metal detectors using various technologies. This is one of them that uses direct frequency measurement.

The detector can detect a small metal coin at a distance of 15 centimeters.

Speedometer that uses a GPS for speed sensing and an RGB LED to indicate speed to the user. Also features a blinking white light.

Pulse induction metal detector, built on the Arduino Nano.

In this tutorial, you will learn how to use a soil moisture sensor. Practical examples are also provided to help you master the code.

In this tutorial, you will learn how to calibrate and use MQ9 gas sensor with an Arduino board.

Easy to build, but comparable with professional seismometers, homemade Arduino seismometer.