Abstract:
pH scale is used to measure the acidity and basicity of a liquid. It can have readings ranging from 1-14 where 1
shows the most acidic liquid and 14 shows the most basic liquid. 7 pH is for neutral substances that are neither
acidic nor basic. Now, pH plays a very important role in our lives and it is used in various applications. For
example, it can be used in a hemodialysis machine to check the quality of water. Similarly, pH measurement is
used in a wide variety of applications like agriculture, wastewater treatment, industries, environmental
monitoring even in medical also need the pH measurement to ensure the patient get the best treatment. In this
project, were going to make an Arduino pH Meter and learn how to measure the pH of a liquid solution using a
gravity pH sensor and Arduino. A 16x2 LCD is used to show the pH value on the screen. This projet also calibrate
the pH sensor to determine the accuracy of the sensor
