DIYables W5500 Ethernet Module for Arduino, ESP32, ESP8266…
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Quick Overview
The DIYables W5500 Ethernet Module brings reliable wired network connectivity to microcontrollers including Arduino (UNO, Mega, Nano, Leonardo), ESP32, ESP8266, Raspberry Pi, and other development boards with SPI interface. Powered by the advanced W5500 chipset with hardware TCP/IP stack, this compact module enables your projects to connect to local networks and the internet via a standard RJ45 Ethernet port. Perfect for IoT devices, web servers, network sensors, home automation systems, data loggers, remote monitoring, and any application requiring stable wired connectivity without relying on WiFi.
The W5500 module communicates via SPI interface and is compatible with both 3.3V and 5V logic levels, making it versatile across different microcontroller platforms. The W5500 chip handles all TCP/IP protocol processing in hardware, freeing up your microcontroller's resources for application logic. Support for both TCP and UDP protocols enables web servers, REST API clients, MQTT communication, email notifications, NTP time synchronization, and diverse network applications. The compact breakout board design with clearly labeled pins makes breadboard prototyping and permanent installations straightforward.
Whether you're building a home automation hub, environmental monitoring station, industrial sensor network, web-enabled controller, or networked Arduino project, this W5500 module provides professional-grade wired connectivity in a small form factor. Compatible with standard Ethernet libraries for Arduino, ESP32, and ESP8266 platforms. Complete with comprehensive tutorials covering web servers, clients, and practical examples for multiple platforms—get your microcontroller online quickly and reliably. Ideal for makers, students, hobbyists, and professionals building stable network-connected devices.
Key Features
- W5500 Hardware TCP/IP Engine — Advanced W5500 Ethernet controller with integrated hardware TCP/IP stack handles all network protocols automatically, freeing microcontroller resources for application logic
- Standard RJ45 Ethernet Port — Industry-standard RJ45 connector provides reliable wired network connection using standard Ethernet cables (Cat5/Cat5e/Cat6) for local networks and internet access
- TCP and UDP Protocol Support — Full support for both TCP (reliable connections) and UDP (fast datagrams) enables web servers, REST APIs, MQTT, email, NTP time sync, and diverse network applications
- SPI Interface — Communicates via standard SPI protocol (MOSI, MISO, SCK, CS) compatible with Arduino, ESP32, ESP8266, Raspberry Pi, and most microcontrollers with SPI support
- Dual Voltage Compatibility — Works with both 3.3V and 5V logic levels, making it compatible with Arduino UNO/Mega (5V) and ESP32/ESP8266/Nano 33 (3.3V) without level shifters
- Compact Breakout Board — Small form factor module with clearly labeled pins perfect for breadboard prototyping, permanent installations, and space-constrained IoT applications
- Universal Platform Support — Compatible with Arduino (UNO, Mega, Nano, Leonardo, Due), ESP32, ESP8266, Raspberry Pi, STM32, and other microcontrollers with SPI interface
- Standard Ethernet Libraries — Works with Arduino Ethernet library, ESP32 Ethernet libraries, and platform-specific libraries for straightforward programming with extensive examples
- Low Power Consumption — Efficient W5500 chipset with power-down modes minimizes energy use for battery-powered or energy-conscious IoT deployments and remote installations
- Auto-Negotiation — Automatic 10/100 Mbps speed detection and full/half duplex negotiation ensures compatibility with any standard Ethernet network infrastructure
- Free Multi-Platform Tutorials — Comprehensive step-by-step guides, web server examples, and projects for Arduino, ESP32, ESP8266, Arduino Nano available at arduinogetstarted.com, esp32io.com, and newbiely.com
- Versatile Applications — Ideal for IoT devices, home automation, web servers, REST API clients, network sensors, data loggers, MQTT projects, industrial monitoring, remote control systems, and STEM education
SPECIFICATION
| Specification | Value |
|---|---|
| Module Type | Ethernet Network Module |
| Ethernet Controller | W5500 |
| TCP/IP Stack | Hardware-based (W5500 integrated) |
| Network Protocols | TCP, UDP |
| Ethernet Port | RJ45 connector |
| Network Speed | 10/100 Mbps auto-negotiation |
| Duplex Mode | Full/Half duplex auto-negotiation |
| Communication Interface | SPI (Serial Peripheral Interface) |
| Logic Level | 3.3V / 5V compatible |
| SPI Pins | MOSI, MISO, SCK, CS (Chip Select) |
| Power Supply | 3.3V / 5V |
| Compatible Platforms | Arduino UNO, Mega, Nano, Leonardo, Due, ESP32, ESP8266, Raspberry Pi, STM32, other SPI microcontrollers |
| Form Factor | Compact breakout module |
Tutorials
Tested Hardware
| Board | Tested | Notes |
|---|---|---|
| Arduino Uno R3 | ✅ | Fully supported (5V logic) |
| Arduino Uno R4 WiFi | ✅ | Fully supported (5V logic) |
| Arduino Uno R4 Minima | ✅ | Fully supported (5V logic) |
| Arduino Mega | ✅ | Fully supported (5V logic) |
| Arduino Nano | ✅ | Fully supported (5V logic) |
| Arduino Nano ESP32 | ✅ | Fully supported (3.3V logic) |
| ESP32 | ✅ | Fully supported (3.3V logic) |
| ESP8266 | ✅ | Fully supported (3.3V logic) |
| DIYables STEM V3 Board | ✅ | Fully supported (5V logic) |
| DIYables STEM V4 IoT Board | ✅ | Fully supported (5V logic) |
