Wavin AHC 9000 MQTT

Abstract

1. Introduction

This is a simple Esp8266 mqtt interface for Wavin AHC-9000/Jablotron AC-116, with the goal of being able to control this heating controller from a home automation system.

2. Objective

Esp8266 mqtt interface for Wavin AHC-9000/Jablotron AC-116

This project demonstrates how C++, MQTT, ESP8266 can be applied to a real-world Internet of Things (IoT) problem.

4. Technology Stack

• Esp8266. I use a NodeMcu 0.9, mostly because it is very convenient to have the onboard USB interface for programming. Almost anything with an Esp8266 on it will work.
• RJ45 connector. This can be omitted by soldering a patch cable directly to the circuit.

5. System Requirements

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

• Arduino IDE / PlatformIO or a C++ compiler (g++)
• Target board (e.g. Arduino, ESP32) where applicable
• Git (to clone the repository)

6. Installation & Setup

git clone https://github.com/dkjonas/Wavin-AHC-9000-mqtt.git
cd Wavin-AHC-9000-mqtt

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 dkjonas 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.