4.3Editor score
In this guide
Connecting microcontrollers to networks is essential for modern IoT projects. An Arduino Lan Ethernet Module provides reliable wired connectivity for devices that need stable data transmission without wireless interference issues during operation.
We evaluated ten popular modules based on performance, compatibility, and build quality. Our analysis covers key features like TCP/IP support, voltage requirements, and physical interface options to help you find the right fit for your design needs.
Each pick highlights specific strengths and ideal use cases for different builders. Prices and availability change frequently so verify current details before purchasing. These selections represent strong options across various budgets and technical requirements for networked embedded systems.
Top 3 Picks for Best Arduino Lan Ethernet Module
4.7Editor score
3.8Editor score
Top 10 Best Arduino Lan Ethernet Module in 2026 Compared
The following table presents a side-by-side comparison of all ten selected Ethernet modules. It highlights key specifications and features to help you quickly identify differences in voltage support, chip type, and included quantity for your specific project requirements.
1. HiLetgo 2pcs W5500 Ethernet LAN Network Module – Top Rated Performance
This module features the W5500 chipset with a 4.2 rating indicating solid user satisfaction for network tasks. It supports eight independent sockets and offers substantial internal memory for reliable data handling during transmission operations.
Pros
- High speed SPI interface support
- Internal memory for buffers
- Multiple socket simultaneous support
- Compatible with STM32 MCU
- Wake on LAN UDP support
Cons
- Requires stable power supply
- Setup may need libraries
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The hardware TCP/IP stack allows for seamless connection management without burdening the microcontroller processor. This makes it ideal for complex IoT projects where multiple data streams must be handled efficiently at once.
Users should note the requirement for a stable external power source exceeding 200mA to ensure consistent operation. Voltage stability is critical for SPI communication integrity to avoid data corruption during long runs.
If you need a robust solution for industrial or home automation projects this module delivers the performance and reliability required. It stands out for its ability to manage multiple connections simultaneously with ease.
Internal Memory for Stable Buffers
The 32k bytes memory allows for efficient TX/RX buffer management which reduces processing overhead on your main microcontroller unit.
Wake on LAN Capability
UDP based wake on LAN functionality enables remote power management features useful for energy saving automated systems.
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2. HiLetgo W5500 SPI to LAN Ethernet Network Module – Best Budget Value
This module offers excellent value at a lower price point while maintaining strong performance characteristics for typical Ethernet needs. Users report high satisfaction with its reliability when connected to Arduino and STM32 development boards.
Pros
- Affordable pricing point
- Flexible voltage operation
- Fast SPI communication speed
- Compact PCB size
- Supports TCP/IP protocols
Cons
- External power supply needed
- Wiring requires care
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The TTL level SPI interface ensures compatibility with standard logic levels found on most microcontroller platforms. This simplifies wiring and reduces the need for additional level shifting components in your circuit design.
Power supply stability remains important so ensure your source can deliver at least 200mA continuously. Proper decoupling capacitors should be used near the module pins to filter noise during high traffic periods.
For hobbyists and students seeking an affordable entry into wired networking this module is an ideal choice. It balances cost and capability effectively for learning and prototyping stages of project development.
Voltage Flexibility
Operation across 3.3V and 5V rails allows direct integration with various microcontroller voltage standards without level shifters.
SPI Interface Speed
Fast SPI communication enables real-time data exchange necessary for responsive networked applications and IoT devices.
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3. ACEIRMC W5500 SPI to LAN Ethernet Network Module – Multi Pack Convenience
Purchasing this five-piece pack provides ample quantity for team projects or bulk prototyping efforts. The consistent 3.3V supply requirement simplifies power rail planning across multiple devices in a single enclosure.
Pros
- Five modules included in pack
- Small PCB footprint
- Consistent voltage requirements
- Good for batch builds
- Compatible with STM32
Cons
- More units than needed
- Power supply still critical
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Each module maintains the high performance standards associated with the W5500 chipset ensuring reliable TCP/IP handling for each unit. This uniformity reduces debugging time when scaling up networked device arrays.
While the small PCB size is advantageous for compact designs it requires careful layout to avoid interference between units. Spacing modules adequately on the main board will improve signal integrity for SPI lines.
Teams working on educational kits or commercial prototypes will appreciate the convenience of this multi pack offering. It removes the hassle of sourcing individual modules later when expanding the initial system design.
Batch Project Readiness
Having five identical units allows rapid deployment across multiple nodes without waiting for additional shipments or inventory.
Compact Form Factor
The 23 by 25mm dimensions fit easily into tight enclosures where space is at a premium for embedded devices.
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4. 2-Pack W5500 Ethernet LAN Module – Dual Pack Utility
This module integrates a full hardware TCP/IP stack which offloads network processing from the main microcontroller significantly. The high 80MHz SPI mode supports fast real-time control scenarios requiring low latency data transfers over Ethernet.
Pros
- Integrated protocol stack
- High speed SPI operation
- Multi socket capability
- Dual voltage support
- Industrial grade PHY
Cons
- Low customer rating noted
- Requires careful implementation
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Eight simultaneous sockets allow multiple client server connections to exist at once without complex software handling. This is particularly useful for servers that need to handle several incoming data streams concurrently.
Users should be mindful that lower ratings suggest potential setup challenges or compatibility nuances not present in all kits. Careful review of wiring diagrams and library requirements is advised before beginning implementation for your project.
If you require industrial grade PHY support with auto-negotiation this module provides the physical layer robustness needed. It is well-suited for applications where connection stability and speed are non-negotiable priorities for success.
Hardware Protocol Stack
The embedded TCP/UDP/ICMP stack ensures reliable network communication without relying heavily on microcontroller software libraries.
Auto-Negotiation Support
Full/half duplex auto-negotiation allows the module to adapt to different switch and router configurations automatically.
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5. DEVMO W5100 Ethernet Network Shield LAN – Shield Convenience
This shield design eliminates the need for external wiring by stacking directly onto your Arduino board for immediate connectivity. It provides a robust solution for users who prefer pre-built hardware over breadboard prototyping.
Pros
- Plug and play form factor
- Integrated SD card storage
- Compatible with UNO boards
- Standard RJ45 connection
- No wiring complexity
Cons
- Older chip architecture
- Higher cost than modules
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The inclusion of an SD card slot enables local data logging alongside network connectivity in a single compact unit. This dual functionality is ideal for devices that must store logs locally while maintaining remote monitoring access.
Compatibility with multiple Arduino variants ensures you can use this across different board families without modification. This versatility makes it a strong option for projects that might evolve or scale during development phases.
While slightly more expensive than standalone modules the time saved on wiring makes it worthwhile for many users. It represents a premium choice for those prioritizing convenience and stability in their network setup tasks.
Plug and Play Setup
Stacking directly onto the board removes soldering and wiring errors making it accessible for beginners and experts alike.
SD Card Integration
Onboard SD card storage allows for offline logging which is useful when network connectivity is intermittent or costly.
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6. HiLetgo ENC28J60 Ethernet LAN Network Module – Classic Ethernet Choice
The ENC28J60 chip has long been a standard for basic Ethernet needs in embedded systems due to its simplicity. It supports SPI communication effectively and comes with essential components like a crystal and isolation transformer included.
Pros
- Reliable ENC28J60 chip
- Includes isolation transformer
- Simple SPI interface
- 3.3V compatible operation
- Cost effective solution
Cons
- Slower than newer chips
- Limited socket support
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Isolation transformers on the board provide necessary signal integrity protection from electrical noise in the environment. This ensures that data packets are transmitted reliably without corruption caused by nearby interference or ground loops.
Users should note that this chip offers fewer simultaneous sockets compared to newer options like the W5500. It is best suited for simpler applications where one or two connections are sufficient for the project goals.
For those working with older codebases or seeking a straightforward introduction to Ethernet networking this module remains relevant. It balances classic reliability with modern compatibility for various microcontroller families and development environments.
Isolation Transformer Included
The HR911105A isolation transformer protects the MCU from voltage spikes on the line to improve longevity.
Standard SPI Interface
SPI communication ensures easy integration with most microcontrollers without needing complex protocol conversion hardware.
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7. ACEIRMC 5pcs ENC28J60 Ethernet LAN Network Module – Top Rated Bundle
This bundle boasts a high 4.7 rating indicating excellent user satisfaction and reliable performance across many builds. It offers five modules which is perfect for group projects or maintaining a spare inventory for production needs.
Pros
- Highest rating among bundles
- Includes five units
- IEEE standard compliance
- Reliable isolation features
- Great for classroom use
Cons
- Older chip technology
- Requires 3.3V logic
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The IEEE 802.3 compliance ensures that the module meets industry standards for Ethernet communication and signal integrity. This reduces the risk of compatibility issues with standard network switches and routers during deployment.
While the chip is older its proven stability makes it a safe choice for applications where high speed is not the primary goal. It handles basic web server and telemetry tasks with consistent performance over time.
Educational labs and maker spaces will appreciate the value provided by this multi-pack offering. It allows multiple students or teams to build networked projects simultaneously without delays in receiving additional hardware.
IEEE 802.3 Compliance
Meeting industry standards guarantees interoperability with standard networking equipment and reduces potential connection issues.
Bundle Value Proposition
Five units at a single price point lowers the per-unit cost significantly for batch builds and classroom settings.
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8. W5500 Ethernet Module TCP/IP Network Module – Simple Integration
This module earns a perfect rating due to its straightforward design and reliable performance across multiple platforms. It simplifies Ethernet connectivity for ESP32 and Arduino boards with a standard RJ45 interface and clear SPI connections.
Pros
- Perfect customer rating
- Easy SPI integration
- Full-size RJ45 port
- Wide voltage compatibility
- Ideal for IoT projects
Cons
- Single unit only
- No extra accessories
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The full-size RJ45 port ensures a secure physical connection that minimizes cable disconnection risks during transport. This physical robustness is vital for portable IoT devices that might be moved frequently in the field.
Support for both 5V and 3.3V logic levels removes the need for logic level converters in many common circuits. This flexibility makes it easier to integrate into existing breadboard layouts without complex modifications.
For developers seeking a no-fuss solution to add Ethernet to microcontroller projects this module is a top recommendation. Its perfect score reflects consistent reliability and user-friendly setup experiences for diverse application scenarios.
Full-Size RJ45 Port
The standard port size ensures reliable physical connections with common network cables used in industrial settings.
Wide Logic Compatibility
Support for 5V and 3.3V logic allows direct connection to many popular microcontrollers without level shifters.
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9. 2PCS LAN8720 Ethernet Board – Performance PHY Choice
The LAN8720 chip offers high performance physical layer transceiver capabilities suitable for demanding network environments. It supports automatic MDIX detection which simplifies cabling by allowing any Ethernet cable to work correctly.
Pros
- High performance PHY chip
- Auto-MDIX support included
- Low power consumption
- Embedded server capability
- Flexible power management
Cons
- Requires more setup effort
- Mixed user ratings
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Low power design features make this module appealing for battery powered or energy sensitive embedded server applications. It integrates a 1.2V regulator to support IO voltage ranges that match different microcontroller standards efficiently.
Users should expect a slightly steeper learning curve compared to pre-made modules as it may require more configuration. However, for specialized applications where power efficiency is critical this trade-off is often acceptable.
If you are building an embedded web server that needs to run continuously on limited power this board is a strong candidate. Its flexibility supports various IO voltage configurations found in professional embedded system designs.
HP Auto-MDIX Support
Automatic MDIX detection allows the module to work with crossover or straight through cables automatically without issues.
Flexible Power Architecture
The architecture supports single 3.3V supply operation which simplifies power design for portable embedded devices.
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10. Hailege ENC28J60 Ethernet LAN Network Module – Solid Starter Module
This module maintains a strong 4.6 rating reflecting consistent performance for entry level networking tasks. It includes all necessary passive components such as the crystal and transformer to function right out of the package.
Pros
- High customer rating
- Includes crystal oscillator
- Isolation transformer present
- Wide MCU compatibility
- Simple SPI interface
Cons
- Older protocol limits
- Requires 3.3V logic
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Compatibility with AVR LPC and STM32 ensures that it works with a wide range of microcontroller families used in hobby and professional sectors. This broad compatibility makes it easy to integrate into existing designs without hardware changes.
Users working with older code or simpler network requirements will find this module straightforward to implement. It avoids the complexity of newer chips while still providing reliable connectivity for basic telemetry and control projects.
For a balance of cost and reliability in simpler networked devices this module remains a solid contender. It is an excellent choice for those who prefer tried and true technology over the latest high-speed alternatives.
Onboard Crystal Oscillator
The 25MHZ crystal ensures accurate timing for network data transmission reducing the need for external components.
Isolation Transformer
HR911105A isolation protects the microcontroller from electrical noise improving long term reliability in noisy environments.
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Buying Guide – How to Choose the Best Arduino Lan Ethernet Module
Selecting the right Ethernet module depends on your project needs. This guide outlines key factors to consider before purchasing a network connectivity solution for your microcontroller.
Chipset Performance
The chipset determines the speed and features of your module. W5500 models offer modern performance with multiple sockets and hardware TCP/IP stacks. ENC28J60 models are older but simpler and cheaper for basic tasks.
Choose newer chips like W5500 for complex applications and older chips for simple tasks.
Voltage Compatibility
Verify the voltage requirements of your microcontroller. Some modules require 3.3V logic while others support 5V levels. Using mismatched voltages can damage the module or cause communication errors.
Ensure the module voltage matches your microcontroller voltage levels directly.
Power Supply Needs
Ethernet modules often need more current than the microcontroller provides. Check the current requirements such as 200mA and ensure your power source can deliver it stably without fluctuations.
Use a dedicated power source if the main board cannot handle the load.
Interface Type
SPI is the standard interface for these modules ensuring high speed communication with the processor. Some modules use TTL level SPI which simplifies connection to various development boards.
Select SPI modules for best speed and compatibility with most microcontrollers.
Physical Form Factor
Decide between a shield or a breakout board. Shields stack directly on the board for convenience while breakout boards save space on custom PCBs.
Pick shields for ease and boards for custom compact designs.
Protocol Support
Check for TCP/IP stack support to offload processing from the main CPU. Hardware stacks ensure reliable connections without bogging down the microcontroller resources.
Prioritize hardware TCP/IP support for complex network applications.
Package Quantity
Buying in bundles can save money if you need multiple units. Consider if you need spares or multiple boards for testing before committing to a single unit.
Bundles are cost effective for team or production projects.
Connectivity Features
Look for RJ45 port quality and auto-negotiation support. These ensure physical connection stability and compatibility with various network switches.
High quality ports improve reliability in industrial settings.
How to Use and Care for Your Arduino Lan Ethernet Module
Begin by connecting the module to your microcontroller using SPI pins for communication. Ensure power pins are connected to a stable source capable of providing sufficient current for both board and network activity.
Install the appropriate network library for your module chipset in your development environment. Configure the IP settings and test connectivity with simple ping or web request code examples.
Keep the module away from high interference sources and ensure cables are secured to prevent accidental disconnects. Regularly inspect connections for wear if the device is used in mobile applications.
Frequently Asked Questions
Do I need a shield to use an Ethernet module?
No, shields are optional. You can use breakout boards with jumper wires. Shields are convenient but take up space on the board.
Which module is better for Arduino UNO?
The ENC28J60 modules work well due to simplicity. W5500 is faster but needs careful wiring. Check compatibility libraries before selecting.
What voltage do Ethernet modules typically need?
Most modules require 3.3V logic and power. Some support 5V but verify the data sheet. Mismatched voltage can damage components.
Can I use Ethernet with ESP32?
Yes, ESP32 supports SPI Ethernet modules easily. Ensure the pin configuration matches the board for proper data communication.
How many connections can W5500 handle?
The W5500 chipset supports eight simultaneous sockets. This allows multiple server clients to connect at once without issue.
Is a power supply needed for these modules?
Yes, most modules need an external supply for stable operation. Ensure it provides sufficient current above 200mA for reliability.
Final Thoughts on Choosing the Best Arduino Lan Ethernet Module
We reviewed ten strong options ranging from budget-friendly bundles to high-performance shields. Each offers unique benefits depending on your specific project needs and budget constraints.
Prioritize voltage compatibility and power supply stability to avoid common setup issues. Select a chipset that matches your speed and connection count requirements for success.
Always check current pricing and availability as these factors change frequently. Choose the option that best fits your technical and financial constraints.