In this post, I introduce a new pH Sensor Library for Proteus, designed to enhance your simulation capabilities. This tool is invaluable for those familiar with pH sensors, which are essential for monitoring the acidity or alkalinity of various fluids. Since the Proteus software does not include a built-in pH sensor, we developed this library to fill that gap. With this new pH sensor, you can simulate connections with a variety of microcontrollers, such as Arduino, PIC Microcontroller, 8051 Microcontroller, and more. We hope you find this addition helpful for your projects.
Click here to download the library ZIP file provided by The Engineering Projects where you can see step-by-step guide on how to install the library on protuse if you are not familiar with it.
Interface of PH sensor with Arduino Mega 2560
Now I will connect and interface a pH Sensor v1.0 with an Arduino Mega 2560, as you know A pH sensor is a tool for measuring the acidity or alkalinity of a liquid of solutions in various scientific, industrial, and environmental applications, and by connecting it to an Arduino Mega 2560, you can read and display the pH value on a serial monitor or an LCD. This guide will walk you through the necessary components, wiring, and coding steps to achieve this.
Components
1-pH Sensor v1.0
2-Arduino Mega 2560
3-pH Probe
4-BNC Connector
5-LCD Display Breadboard
6-Jumper
7-wires
8-Power supply
Connect the pH Sensor to the Arduino Mega 2560
Connect the pH Probe to the BNC Connector and then attach the pH probe to the BNC connector on the pH sensor module.
Wiring the pH Sensor Module to the Arduino Mega 2560:
-PO (Analog Output) on the pH sensor module to Analog Pin A0 on the Arduino.
-VCC on the pH sensor module to 5V on the Arduino.
-GND on the pH sensor module to GND on the Arduino.
PS: In the Schematic Capture of Proteus, don’t forget to double-click on the pH sensor, go to the program file, and choose a file called “pHMeterLibraryTEP.HEX” before you run the simulation.
Connect the LCD Display (Optional)
–VCC on the LCD to 5V on the Arduino.
–GND on the LCD to GND on the Arduino.
–SDA on the LCD to SDA (pin 20) on the Arduino.
–SCL on the LCD to SCL (pin 21) on the Arduino.
Install the Required Libraries
Ensure you have the necessary libraries installed in your Arduino IDE
LiquidCrystal_I2C library for the LCD and wire library for I2C communication (included by default).
Write the Arduino Code
Before we start coding, it’s important to note that this Arduino sketch is designed for pH measurement using an analog sensor. The sketch reads voltage from a pH probe connected to analog pin A0, converts this to a pH value using a calibration factor, and outputs the results to a virtual terminal. The code needs to be optimized for use with Proteus simulation software, utilizing an Arduino Mega 2560 board.
Every second, the virtual terminal screen is cleared, and updated voltage and pH readings are displayed in a formatted layout. This setup allows for real-time monitoring of pH levels in a simulated environment, making it ideal for pH measurement systems.
Click here to download the Arduino IDE code
ZIP Password: hussamalhayek.com
Conclusion
Integrating a pH sensor with Proteus 8 Professional CAD and an Arduino Mega 2560 provides a robust and efficient way to simulate real-time pH measurement systems.
This project demonstrates the way to set up the hardware and software, optimize Arduino code for Proteus, and monitor pH levels accurately. By leveraging Proteus for simulation, you can test and refine your pH measurement system before deploying it in a real-world scenario, ensuring accuracy and reliability. This approach is ideal for educational purposes, prototyping, and developing applications where pH monitoring is crucial.