In a world driven by smart technology, real-time data monitoring has become essential — not just in industrial systems, but even in basic IoT applications like temperature sensing.

This post shows you how to build a complete IoT data pipeline using:

• 📟 ESP32 microcontroller

• 🌡️ LM35 temperature sensor

• ☁️ Cloudtopiaa’s DataStreamX — a powerful real-time data streaming engine

Whether you’re a beginner in IoT development or exploring edge computing for enterprise systems, this guide blends hardware, firmware, and cloud data streaming into one cohesive solution.

Project Overview: What We’re Building

We’ll build a real-time IoT system that:

• Reads temperature using an LM35 sensor

• Transmits it via MQTT protocol

• Processes the data using DataStreamX (on Cloudtopiaa’s infrastructure)

• Displays it on a live IoT dashboard

Use Cases:
Industrial IoT
Environmental monitoring
Smart homes
Embedded systems requiring real-time response

Components Required

ComponentDescriptionESP32 BoardWi-Fi-enabled microcontroller for IoTLM35 Temperature SensorAnalog sensor with linear outputJumper WiresFor connectionsBreadboardFor prototypingDataStreamX PlatformReal-time streaming and visualization

Hardware Setup

• Connect LM35 to ESP32:

• VCC → 3.3V

• GND → GND

• VOUT → Analog pin (e.g., GPIO34)

• Power up your ESP32

Firmware: Code for ESP32

The ESP32 will:

• Read analog voltage from the LM35 sensor

• Convert it into Celsius

• Publish the readings to DataStreamX every 5 seconds using MQTT

temperature = (analogRead(34) * 3.3 / 4095.0) * 100.0; // LM35 conversion

What is DataStreamX?

DataStreamX is a low-code, real-time data pipeline platform built into Cloudtopiaa’s cloud infrastructure.
It helps developers to build resilient, scalable IoT systems easily.

Key Features:

• MQTT Adapter for IoT sensors

• Real-time dashboards

• Event-based alerts

• Edge-cloud synchronization

• Secure data routing

Cloudtopiaa + DataStreamX = Instant, Scalable IoT

Setting Up DataStreamX on Cloudtopiaa

To set it up:

• Log into: https://cloudtopiaa.com

• Go to the DataStreamX dashboard

• Create a new MQTT Adapter

Define:

• Input Stream: Temperature sensor topic

• Logic: (e.g., Trigger an alert if temp > 40°C)

• Output Stream: Live dashboard visualization

Live Visualization: Monitor in Real-Time

Once your ESP32 starts publishing:

• View real-time temperature plots

• Monitor averages, minimum, and maximum values

• Visualize it instantly on the Cloudtopiaa dashboard

Bonus: Trigger Smart Actions

You can create rules like:

• If temperature > 50°C → Send an email alert

• If temperature > 60°C → Automatically activate a cooling fan

Security & Scalability

Cloudtopiaa ensures:

• 🔒Encrypted communication

• 🔑 Role-based access control

• 🧾 Audit logs for compliance

• 📈 Scalability from 10 to 10,000+ sensors

Perfect for smart factories, research labs, and large-scale IoT deployments!

Real-World Applications

Smart Homes: Thermal alerts & automation
Healthcare IoT: Patient room temperature monitoring
Environmental Monitoring: Greenhouses & weather stations
Industry 4.0: Machine cooling and predictive maintenance
Education: STEM IoT projects with ESP32

What’s Next? Intelligent Automation

Cloudtopiaa is working to add AI feedback loops inside DataStreamX soon, enabling:

• Predict overheating events

• Auto-adjust environmental controls

• Optimize energy consumption in real-time

Start Your IoT Journey Today

You don’t have to be a cloud architect or hardware expert to create an IoT system today.
With Cloudtopiaa’s low-code dashboard, you can:

🔗 Connect your devices

Set data logic

Visualize everything in real-time!

🔗 Build with DataStreamX → Start Now