Temp-Alert

Proof of Concept – simple application for processing IoT telemetry in Microsoft Azure. Storing aquired data to blob storage and send them to Cisco Webex Teams Room.

⚙️ Description

Temp-Alert receives device-to-cloud messages from a Miro Insight sensor sent via LoRaWAN to Azure IoT Hub, decodes the payload and then:

• stores the full telemetry (temperature, humidity, pressure, …) as JSON blobs in Azure Blob Storage
• sends a temperature report message to a Cisco Webex Room

⚠️ This is just a sample implementation (Proof of Concept).

---

🏗️ Architecture

flowchart LR
  A["Miro Insight IoT sensor"] -->|LoRaWAN| B["Azure IoT Hub"]
  B --> C["Temp-Alert (Azure Function)"]
  C --> D["Azure Blob Storage (JSON files)"]
  C --> E["Cisco Webex Room (alerts)"]

Loading

🚀 Requirements

•	Azure Subscription with:
•	IoT Hub
•	Blob Storage (container for JSON data)
•	Miro Insight LoRaWAN-enabled sensor
•	Cisco Webex Bot configured for your target room
•	Python 3.8+

🔧 Installation & Deployment

1. Clone the repo

git clone https://github.com/filippohronsky/temp-alert.git
cd temp-alert

2. Create a virtual environment & install dependencies

python -m venv .venv
source .venv/bin/activate     # Linux / macOS
.venv\Scripts\activate        # Windows
pip install -r requirements.txt

3. Configure

Create a .env file in the project root with:

IOTHUB_CONNECTION_STRING="<your IoT Hub connection string>"
BLOB_CONNECTION_STRING="<your Blob Storage connection string>"
WEBEX_ACCESS_TOKEN="<your Webex Bot token>"
WEBEX_ROOM_ID="<your Webex room ID>"

4. Deploy to Azure

• Package as an Azure Function (or WebJob/Container) • Set the same environment variables under Application Settings

🛠️ Usage

• When your sensor sends a message, Azure IoT Hub routes it into a new blob under your container.
• The Azure Function triggers on each blob creation, then:
  1. Decodes the incoming base64-encoded payload
  2. Writes the telemetry JSON to Blob Storage
• Posts a formatted temperature alert to your Cisco Webex Room, for example:
  • ℹ️ Teplota: {temperature} , Vlhkosť: {humidity} , CO2: {co2} , IAQ: {iaq} , Tlak: {pressure} , Napätie batérie: {battery_v}

🔖 License

This GitHub repository is provided free of charge and may be used without restriction. The author assumes no responsibility or liability for any use of this repository.