If you want to know the acidity (or alkalinity) level of your pool or aquarium water, you need a pH meter. In this article, you'll find a simple but effective solution based on off-the-shelf ...

Here we are interfacing pH sensor and Arduino to make pH meter which can measure the pH values of any liquids and display the pH values on LCD display. You can also learn how to calibrate the Ph ...

This project demonstrates how to interface a piezoelectric sensor with an Arduino Uno. The piezoelectric sensor converts mechanical stress (such as pressure or vibrations) into electrical signals. The ...