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Green rectangular circuit board with Ethernet port and USB connector

Arduino

Arduino Leonardo ETH development board ATmega32U4 W5500

SKU CH-6YGW-EJ53G

Microcontroller board with ATmega32U4 and W5500 Ethernet for USB-connected network projects

  • ATmega32U4 enables native USB mouse and keyboard emulation
  • W5500 controller provides hardwired TCP/IP Ethernet connectivity
  • Optional Power over Ethernet module simplifies cabling
  • Built-in USB communication removes need for external converter
  • Ready-to-use development board with headers pre-installed

Arduino Leonardo ETH board

The Leonardo ETH is a microcontroller board built around the ATmega32U4 and a W5500 TCP/IP Embedded Ethernet Controller. It includes everything required to run the microcontroller and connects to a computer via USB cable or an external power supply. The ATmega32U4 provides native USB communication so the board appears as a mouse, keyboard and virtual serial port.

Makers adding wired Ethernet to USB HID projects

This board suits developers who need a single device that presents as a USB human-interface device while also serving a hard-wired network link. An optional Power over Ethernet module can be added for single-cable deployments. Builders who require wireless connectivity or a higher-performance processor should consider other platforms.

ATmega32U4 with W5500 Ethernet controller

The defining specification is the combination of the ATmega32U4 microcontroller and the W5500 TCP/IP Embedded Ethernet Controller on one board. This pairing delivers native USB HID capability together with a hardware TCP/IP stack for wired networking. No other single figure determines suitability for a given project.

How it compares

Measured against everything we stock in Single-Board Computers & Dev Kits, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 88% of the 1,420 comparable items (median $44.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What USB cable do I need to connect the Leonardo ETH to my computer?

A standard USB cable is sufficient because the ATmega32U4 provides built-in USB communication.

Can I use existing Arduino shields with the W5500 Ethernet controller on this board?

The W5500 is integrated onboard, so standard shields that do not conflict with the Ethernet pins will work normally.

How can I verify the ATmega32U4 and W5500 are functioning after I power the board?

The board will enumerate as a virtual COM port, mouse and keyboard, confirming the ATmega32U4 is active; network connectivity tests confirm the W5500.

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