Opc

Abstract

1. Introduction

Read and write process and automation data in Go from an OPC server for monitoring and data analysis purposes (OPC DA protocol).

client, _ := opc.NewConnection( "Graybox.Simulator", // ProgId []string{"localhost"}, // Nodes []string{"numeric.sin.float"}, // Tags ) defer client.Close() client.ReadItem("numeric.sin.float") browser, _ := opc.CreateBrowser( "Graybox.Simulator", // ProgId []string{"localhost"}, // Nodes ) opc.PrettyPrint(browser) package main

func main() { client, _ := opc.NewConnection( "Graybox.Simulator", // ProgId []string{"localhost"}, // OPC servers nodes []string{"numeric.sin.int64", "numeric.saw.float"}, // slice of OPC tags ) defer client.Close()

2. Objective

OPC DA client in Golang for monitoring and analyzing process data based on Windows COM.

This project demonstrates how Go can be applied to a real-world Internet of Things (IoT) problem.

4. Technology Stack

5. System Requirements

General requirements for this technology stack — check the README for exact versions.

• Go 1.20 or later
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/konimarti/opc.git
cd opc

Full setup instructions are in the project README.

7. Future Enhancements

Suggested extensions you can add to make this your own project.

• Add a mobile dashboard using Blynk or Firebase
• Store readings in a cloud database for history charts
• Add alerts via SMS / Telegram when thresholds are crossed

8. Viva / Review Questions

Common questions examiners ask for projects in this domain.

1. Which microcontroller / board and sensors are used and why?
2. How does the device send data (Wi-Fi, MQTT, HTTP, Bluetooth)?
3. Where is the sensor data stored and visualised?
4. How is power consumption managed?
5. How would you secure the device and its communication?

9. Source Code & License

This project is developed by konimarti and published on GitHub under the MIT License. Please follow the license terms and credit the original author when you use or modify this code.