IOT Box with HiveMQ

Description

This project provides comprehensive functionality for an IoT device using ESP32. It supports Wi-Fi and MQTT for communication, has an asynchronous web server with webpage for configuration, handles OTA updates, reads sensor data, and controls relays and IR devices. The use of preferences and SPIFFS ensures that configuration data is stored persistently across reboots. Additionally MQTT protocol makes this device accesible on all platforms such as Windows , Linux, IOS ,Android etc. using the publisher and subscriber model .

Table of Contents

• Installation
• Broker Setup
• Usage
• Tweaking the design
• Electronics
• Cad files and 3d printing

Installation

Clone the repository

• git clone https://github.com/Vistx/IOT-Box.git

• go to project /IOT Box tasks

  1. First : Build Filesystem Image
  2. Then: Upload Filesystem Image

  

• Upload the code to your esp32

Important! The first code uploaded to the board must be done via Serial connection , after you setup the parameters in the user setup page the code can be uploaded via OTA. You can find the devices IP address in your router, after the first upload via serial change the upload_port = ip_here in platform.ini file .

Broker Setup

This project uses HiveMQ as a broker , create an account here . The next step is to got to Clusters, in the top right corner Create New Cluster

and Create a Serverless Cluster.

After creating a Cluster enter Manage Cluster page

then go to Access Management and create Credentials to connect to that cluster.

Important: Give publish subscribe permissions to the created user.

Usage

User Setup: Connect to the "Setup IOT Box" access point Open your browser and follow the url: http://192.168.4.1/

Provide Your Wifi and HiveMq Broker credentials

Windows :

Android / IOS:

I use this app

Setup IoT MQTT Panel app

Broker address(Use HiveMq credentials), username, password ,port(8883),protocol(TSL)

Setup button for IR codes

Toggle Switch For relay controll 4 in toal (topics -> DO_1,DO_2,DO_3,DO_4)

Three gauges for gas, humidity and temperature topics

Tweaking the design

Drill a small hole to access the reset button on your PCB like so:

This button resets your saved credentials and sends the device in setup mode.

Electronics

Parts used:

1x ESP-Wroom-32u

1x MQ-4 sensor

1x DHT 11

4x Relay module

1x IR transmitter and receiver module

1x Antenna with mount

1x Pair Male + Female 12v DC jack

1x Push button

2x Switches

1x Prototype PCB 6x8 breadboard

3x Leds (Red,Yellow,Blue)

3x Resistors 48 Ohm

Prototype PCB

Assembly

CAD files and 3D Printing

You can find Fusion 360 Files here

References

https://randomnerdtutorials.com/

https://www.svgrepo.com/