Product Overview
The W5100 Ethernet Network Module is a reliable wired networking solution that enables Arduino and microcontroller systems to connect directly to a local network or the internet.
Built around the Wiznet W5100 chip, this module handles the full TCP/IP stack internally, allowing stable communication without heavy processing load on the microcontroller. It is ideal for IoT systems, web servers, and industrial networking applications where wired stability is required.
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Technical Specifications
• Chipset: Wiznet W5100
• Interface: SPI (Serial Peripheral Interface)
• Operating Voltage: 5V DC
• Logic Level: 5V compatible
• Network Standard: IEEE 802.3 Ethernet
• Supported Protocols: TCP, UDP, ICMP, IPv4
• Data Transfer Rate: Up to 10/100 Mbps
• Socket Support: Up to 4 simultaneous connections
• MAC Address: Configurable
• Connector Type: RJ45 Ethernet port
• Operating Temperature: -20°C to +70°C
• Dimensions: Approx. 55 × 25 mm
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Key Features
• Built-in TCP/IP protocol stack (no external processing required)
• Stable wired Ethernet connection (no interference issues)
• Supports multiple simultaneous socket connections
• SPI interface for easy integration with Arduino
• Compatible with Arduino Ethernet libraries
• Onboard RJ45 connector with integrated magnetics
• Low CPU usage due to hardware processing
• Ideal for long-term industrial and IoT deployment
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Applications
• IoT systems with wired networking
• Arduino web server projects
• Industrial automation systems
• Data logging and remote monitoring
• Smart home wired control systems
• Network-enabled robotics
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Advantages over Other Products in the Market
• More stable than WiFi modules (no signal interference)
• Lower latency communication compared to wireless solutions
• Offloads TCP/IP processing from microcontroller
• Reliable for continuous operation (24/7 systems)
• Simple integration with existing Arduino ecosystem
• Cost-effective wired networking solution
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Load Recommendation
• Use a stable 5V power supply (recommended for consistent network performance)
• Ensure proper SPI wiring to avoid communication errors
• Use high-quality Ethernet cable for maximum stability
• Suitable for continuous operation in industrial environments
• Avoid powering from weak USB sources in high-load applications