The pH of a solution can be determined using a pH meter or a pH indicator solution. The module utilises Hydrogen-ion activity also known as the “proton activity” for measuring pH of the liquid. This ...

Connect the pH sensor module to the Arduino: VCC to 5V; GND to GND; AO (Analog Output) to A0 (Analog Pin 0) If using an LCD display, connect it according to its datasheet or use an I2C LCD for easier ...

This project demonstrates how to use an ESP8266 microcontroller to interface with a pH sensor. The pH sensor measures the acidity or alkalinity of a solution and outputs an analog signal that the ...

The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator, gives ...