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Enabling Industrial Sensors For Edge Computing Using EdgeX

Learn how to integrate industrial SHT20 temperature and humidity sensors with a Raspberry Pi using the EdgeX framework for edge computing and cloud monitoring.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

Raspberry Pi 3 - Model B+ 1.4Ghz 64-bit quad-core Processor with 1 GB Ram (Original) Rs. 9,810.00
10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
USB to UART/ESP8266 Adapter Programmer for ESP-01 WiFi Modules with CH340G Chip Rs. 99.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

We don't carry yet: SD / MicroSD Card
Radio Receiver / Transmitter (RC)

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How It Works

This advanced edge computing system bridges industrial environmental monitoring with modern software architectures using a Raspberry Pi 5 running Ubuntu OS. At the hardware layer, the industrial SHT20 temperature and humidity sensor (XY-MD02) measures ambient conditions and communicates via the Modbus protocol over a differential RS485 serial bus. Because the Raspberry Pi lacks a native RS485 port, a 5V DC industrial CH340 USB to RS485 converter module translates the differential serial signals into standard USB data packets that the Raspberry Pi can interpret. The entire circuit is reliably powered by a dedicated 5V 2A DC power adaptor, ensuring stable operation during continuous polling. On the software side, the EdgeX Foundry framework runs on the Ubuntu operating system to ingest, process, and manage the incoming sensor telemetry at the network edge. EdgeX acts as an interoperable microservices framework that collects raw Modbus data from the SHT20 sensor via USB, structures it into standardized device messages, and enables seamless edge-to-cloud data pipelining. By combining robust industrial sensors with a powerful edge computing framework, the system demonstrates how legacy serial field devices can be integrated into modern IoT infrastructures.

Why Build This

Deploy robust edge computing architectures using industrial-grade sensors and open-source frameworks like EdgeX Foundry.

Implement reliable long-distance serial communication in electrically noisy environments using RS485 and Modbus protocols.

Build scalable edge-to-cloud data pipelines suitable for smart factory environments and environmental monitoring networks.

Real-World Application

Industrial IoT monitoring, smart factories, environmental sensing networks, and edge-to-cloud data pipelines.

Skills You'll Learn

Modbus protocol implementation

RS485 serial communication

USB-to-serial converter interfacing

EdgeX Foundry framework configuration

Linux-based edge computing

industrial sensor integration

Safety Precautions

Ensure correct power supply voltage ratings (5V DC) and proper wiring connections for the RS485 interface to prevent hardware damage.

Technology Tags

EDGEX

EDGE COMPUTING

IOT

SHT20 SENSOR

RS485

MODBUS

UBUNTU

RASPBERRY PI

PYTHON

MICROSERVICES

Frequently Asked Questions

Why do I need a CH340 USB to RS485 converter module instead of wiring the sensor directly to the Raspberry Pi?

Industrial sensors like the SHT20 use the RS485 standard, which relies on differential signaling over long distances rather than the single-ended TTL logic levels native to Raspberry Pi GPIO pins. The converter translates these electrical signals so the Pi can read them via USB.

Can I use the standard Raspberry Pi OS, or is Ubuntu OS strictly required?

The project specifically utilizes the Ubuntu OS for Raspberry Pi to ensure full compatibility and streamlined deployment with the EdgeX Foundry containerized microservices architecture.

How does EdgeX Foundry handle the data coming from the SHT20 sensor?

EdgeX uses specialized device services to poll the Modbus register on the SHT20 sensor, translating the raw hexadecimal register values into standardized JSON data structures that can be processed locally or forwarded to a cloud platform.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

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