Moduł WT32-ETH01 ESP32 Ethernet RJ45 Wi-Fi Bluetooth ESPHome do Arduino

Communication bridge WT32-ETH01 / ESP32-ETH01

A universal network module based on the powerful ESP32-WROOM-32 chip. The board integrates 10/100 Mb/s Ethernet, 2.4 GHz Wi-Fi, and Bluetooth 4.2 connectivity. The device features a UART interface and a full TCP/IP network stack. The module is an excellent choice for automation and IoT projects, enabling LAN integration without the need for additional servers. The board is ideal for implementing ESPHome firmware and integration with Home Assistant.

Key technical features

• Microcontroller: ESP32-WROOM-32 (dual-core 32-bit processor, clock speed up to 240 MHz)
• Flash memory: 4 MB
• SRAM memory: 520 KB
• Wired connectivity: 10/100 Mb/s Ethernet (RJ45 socket, LAN8720A PHY chip)
• Wireless connectivity: 2.4 GHz Wi-Fi 802.11 b/g/n and Bluetooth 4.2 (BR/EDR + BLE)
• Supported protocols: TCP, UDP, DHCP, static IP (client and server mode)
• Available interfaces: UART, SPI, I2C, PWM, GPIO
• Power supply: 5 V or 3.3 V (one source at a time)
• Current consumption: approximately 80 mA (peak up to 500 mA)
• Operating temperature: from −40 °C to +85 °C
• Module version: v1.4

Programming

• Initial flashing: via UART (USB↔TTL converter required, e.g. CH340, CP2102)
• Subsequent updates: remotely via OTA (Ethernet or Wi-Fi)
• Environments: Arduino IDE, ESP-IDF, PlatformIO, ESPHome
• Available GPIO: user pins on goldpin headers (some lines used by the Ethernet controller)

Benefits

• Versatile communication - simultaneous support for LAN, Wi-Fi, and Bluetooth in a single module.
• High performance - a dual-core processor running at 240 MHz ensures smooth operation even with complex network tasks.
• Stable connection - wired Ethernet eliminates range issues and wireless network interference.
• Remote updates - OTA support allows firmware to be uploaded over the network.
• Compact dimensions - small size makes it easy to integrate the board into target devices and enclosures.

Example applications

• Home and industrial automation systems (integration with Home Assistant, Node-RED, SCADA).
• Internet of Things (IoT) projects and remote control systems.
• UART to Ethernet interface conversion.
• Data exchange using MQTT, REST API, and WebSocket protocols.
• Building dedicated network controllers and soft-PLC systems.
• Acquisition and distribution of sensor measurement data over a LAN.