Description

The LAN Ethernet W5100 R3 Shield Module with Micro-SD is a highly reliable and cost-effective expansion board designed to add internet connectivity and data storage capabilities to your Arduino projects. Built around the WIZnet W5100 Ethernet controller chip, this shield allows your Arduino to connect directly to a network using a standard RJ-45 Ethernet cable. Whether you’re developing IoT devices, home automation systems, web servers, or data logging applications, this shield gives you the stable wired performance you need.

Unlike Wi-Fi modules that can suffer from interference or range limitations, the Ethernet W5100 R3 Shield provides a secure and consistent connection. Its onboard Micro-SD card slot adds an extra layer of functionality, allowing you to store, retrieve, and manage data seamlessly within your projects.

Key Features

• W5100 Ethernet Controller – Provides a built-in TCP/IP stack supporting multiple protocols.

• Standard RJ-45 Port – Secure, wired Ethernet connection for reliable performance.

• Micro-SD Card Slot – Supports FAT16 and FAT32 file systems for easy data logging.

• Arduino Compatibility – Works with Arduino UNO, Mega, Leonardo, and other boards that support SPI.

• Stackable Shield Design – Plug-and-play operation with Arduino boards, no complex wiring required.

• Supports 4 Concurrent Connections – Handle multiple socket communications simultaneously.

• Onboard Reset Button – Quickly restart both the Arduino and the shield.

• Easy Library Support – Fully compatible with the official Arduino Ethernet library.

 

Technical Specifications

• Chipset: WIZnet W5100

• Supported Protocols: TCP, UDP, ICMP, IPv4, ARP, IGMP, PPPoE

• Maximum Connections: 4 sockets at the same time

• Ethernet Port: RJ45 with integrated line transformer

• Micro-SD Card Support: FAT16 and FAT32 systems

• Interface: SPI (Serial Peripheral Interface)

• Operating Voltage: 5V (from Arduino board)

• Form Factor: Arduino R3 Shield standard size

• Compatible Boards: Arduino UNO R3, Mega2560, Leonardo, and other SPI-supported boards

 

 

Why Choose the LAN Ethernet W5100 R3 Shield Module with Micro-SD?

1. Reliable Wired Networking
   Wired connections ensure speed, stability, and low latency, making this shield perfect for projects that require continuous uptime, such as servers or monitoring systems.

2. Data Logging Capability
   The integrated Micro-SD card slot lets you store and access files, log sensor readings, or even serve simple web pages directly from the shield.

3. Easy to Use with Arduino
   Thanks to full compatibility with the Arduino Ethernet library, setting up this shield is simple. Just stack it on your Arduino board, include the library in your code, and start networking immediately.

4. Versatile Applications
   Suitable for a wide variety of applications—IoT devices, smart homes, industrial monitoring, robotics, and more—this module empowers both hobbyists and professionals to build connected systems.

 

Popular Applications

• IoT & Smart Home Devices – Control appliances remotely over Ethernet.

• Arduino Web Server – Host simple webpages to monitor or control sensors and devices.

• Data Logging Systems – Save temperature, humidity, or sensor readings to the Micro-SD card.

• Robotics Projects – Enable robots to communicate over a network.

• Educational Use – Teach networking and embedded systems with hands-on experiments.

 

Package Includes

• 1 × LAN Ethernet W5100 R3 Shield Module with Micro-SD

 

 

Conclusion

The LAN Ethernet W5100 R3 Shield Module with Micro-SD is the ultimate choice for anyone looking to expand Arduino projects with reliable internet connectivity and onboard data storage. With its stable wired connection, Micro-SD support, and full Arduino compatibility, it provides a robust solution for IoT development, smart home automation, data logging, and educational experiments.

Whether you are a student, hobbyist, or professional engineer, this shield offers everything you need to bring your Arduino projects online with confidence.

Bring your ideas to life with the LAN Ethernet W5100 R3 Shield Module with Micro-SD—the perfect combination of networking and data management for Arduino.

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