There are a lot of Arduino-based metal detectors using various technologies. This is one of them that uses direct frequency measurement.
Project tutorial by Andrius Purr
The detector can detect a small metal coin at a distance of 15 centimeters.
Project tutorial by Mirko Pavleski
Speedometer that uses a GPS for speed sensing and an RGB LED to indicate speed to the user. Also features a blinking white light.
Project tutorial by Jeremy S. Cook
Pulse induction metal detector, built on the Arduino Nano.
Project showcase by FoxyLab
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.
Learn how to use a PIR motion sensor to detect movement. You will also learn how PIR motion sensors work and how to use them.
In this project I created a pretty simple digital level using a LCD screen and a gyro sensor.
Project showcase by elegoo-arduino
An Arduino based device to monitor the levels of combustible gases, carbon monoxide, relative humidity and temperature in the kitchen.
Project showcase by Mustafa Hesham
It's a screen with colorful backlight that shows you some information about printing progress.
Project tutorial by ralex2304
Experimental system for Structural Health Monitoring (SHM), based on the Arduino.
Project showcase by lamaripalma and e-structure_UNO
It is a standard INA219 module but this has an isolated measured voltage from the MCU.
Project tutorial by Tadeas Dvoracek
A modular orientation and acceleration data logger using a pair of ultrasonic sensors, RF transceivers, and a 1Sheeld.
Project tutorial by HyperChiicken
Project tutorial by dev009
Simple project to measure temperature (with two sensors) and humidity, and send them to the terminal (monitor) and also to a LCD display.
Project in progress by brunogomezgil
This little project will show you how to use a soil moisture sensor.
How to use the small module to measure distance for high frequency applications... or low.
Project tutorial by SurtrTech
A digital stadiometer for human height measurement.
Project tutorial by fmarzocca
Use three HC-SR04 ultrasound sensors and two battery displays to show you how close the obstacles are and from which side.
Now we can check out the depth of the sea level by using a pressure sensor (MS5803–01 BA) connected to an Arduino, and display sensor data.
Project showcase by Varul Jain
Copy colours from outside environment.
Project tutorial by Vishwas Navada
How I built an Arduino energy monitor and data logger to collect energy data for different loads and plotted that data using Excel.
Project tutorial by Sridhar Rajagopal
Detect the presence of alcohol with Arduino.
by Yashik Ibrahim
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