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WT32-ETH01 ESP32 Embedded Ethernet & WiFi Bluetooth Combo Module Board

$53.80 USD

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WT32-ETH01 — ESP32 Embedded Ethernet + WiFi + Bluetooth Combo Module

The WT32-ETH01 is a compact embedded module combining Espressif's ESP32 dual-core SoC with a wired Ethernet interface (LAN8720A PHY) alongside 2.4GHz WiFi (802.11 b/g/n) and Bluetooth 4.2 (Classic + BLE). This triple-connectivity module is designed for industrial IoT gateways, smart home hubs, and network-connected embedded systems where both wired Ethernet reliability and wireless flexibility are required in a single compact module.

Technical Specifications

Parameter	Value
SoC	Espressif ESP32 (dual-core Xtensa LX6, 32-bit)
CPU Speed	Up to 240MHz (dual core)
Flash Memory	32Mbit (4MB) SPI NOR Flash
SRAM	520KB (internal)
Ethernet PHY	LAN8720A (10/100 Mbps, RMII interface)
Ethernet Connector	RJ45 with integrated magnetics
WiFi	802.11 b/g/n, 2.4GHz, up to 150Mbps
Bluetooth	BT 4.2 Classic + BLE (dual-mode)
GPIO	14 available GPIO (after Ethernet PHY allocation)
UART	3 × UART
SPI / I²C	3 × SPI, 2 × I²C
ADC	12-bit SAR ADC (up to 18 channels, 6 available)
Operating Voltage	3.3V (onboard LDO from 5V input)
Operating Temperature	−40°C to +85°C
Antenna	PCB trace antenna (WiFi/BT) + IPEX connector option

Supported Network Protocols

TCP/IP, UDP, HTTP, HTTPS, MQTT, WebSocket
mDNS, DNS-SD, DHCP client/server
SSL/TLS (mbedTLS)
IPv4 and IPv6
Ethernet + WiFi simultaneous operation (bridge/router mode)

Programming & Compatibility

Arduino IDE: Supported via ESP32 Arduino Core. Use ETH.begin() for Ethernet initialisation with LAN8720 PHY.
ESP-IDF: Full native support with esp_eth component for production firmware
ESPHome: Supported for Home Assistant integration with Ethernet connectivity
MicroPython: Supported with network.LAN() for Ethernet configuration
PlatformIO: Supported with espressif32 platform

Typical Applications

Industrial IoT Gateways: Wired Ethernet + WiFi bridge for factory sensor networks, SCADA data collection, and Modbus TCP/RTU gateways
Smart Home Hub: Central controller for Home Assistant, OpenHAB, or custom smart home systems with reliable wired Ethernet backbone
Network-Connected Embedded Systems: Web server, REST API endpoint, and OTA update server for embedded product development
PoE-Powered Devices: Combine with a PoE splitter for single-cable power and data in remote sensor installations
VoIP & Audio Streaming: Ethernet-connected audio streaming and intercom systems using ESP32 I2S audio
Building Automation: BACnet/IP, Modbus TCP, and KNX IP gateway applications in commercial building control systems

FAQ

Q: Can the WT32-ETH01 use Ethernet and WiFi simultaneously?
A: Yes. The ESP32 supports simultaneous Ethernet and WiFi operation. You can configure it as a WiFi-to-Ethernet bridge, use Ethernet for upstream connectivity while serving a WiFi AP, or run both interfaces independently.

Q: How do I initialise the LAN8720 Ethernet in Arduino IDE?
A: Use ETH.begin(1, 16, 23, 18, ETH_PHY_LAN8720, ETH_CLOCK_GPIO0_IN) in your setup() function. The WT32-ETH01 uses GPIO0 for the Ethernet clock (RMII CLK IN mode).

Q: Is the WT32-ETH01 compatible with ESPHome for Home Assistant?
A: Yes. ESPHome supports the WT32-ETH01 with Ethernet configuration. Add the ethernet: component with type: LAN8720 and the correct pin assignments in your ESPHome YAML configuration.