Olimex ESP32-POE - image 1
1 / 6
Olimex·Dev Board

Olimex ESP32-POE

Open-source ESP32 development board with built-in Ethernet, Power-over-Ethernet support, micro-SD card slot, and LiPo battery connector. Ideal for wired Tasmota nodes and industrial IoT applications.

Starting from

$24.95

Product Page
Use Cases
Industrial IotWired Smart HomePoe Sensor NodeData LoggingEthernet Mqtt BridgeZigbee Gateway Host
Compatible Firmware
Tasmotaesphomearduinomicropython
#esp32#ethernet#poe#wifi#tasmota#esphome#open-source-hardware#development-board#industrial-iot#olimex#sd-card

Specifications

CPUESP32-WROOM-32
ArchitectureXtensa LX6
CPU Cores2
Clock Speed240MHz
RAM520KB SRAM
Flash4MB
GPIO20+ pins
GPIO Level3.3V
USBUSB-C
Power InputPoE 802.3af or USB-C 5V or LiPo
WiFi802.11 b/g/n
BluetoothBLE 4.2
Ethernet100Mbps (LAN8710A)
AntennaBuilt-in PCB antenna
StoragemicroSD

Components

Dual-Core WiFi & BLE SoC ModuleMicrocontrollerDatasheet

Espressif ESP32-WROOM-32 module with dual-core Xtensa LX6 at 240MHz, 4MB flash, WiFi 802.11 b/g/n, and Bluetooth 4.2

10/100 Ethernet PHY TransceiverEthernet PHYDatasheet

Microchip LAN8710A 10/100 Ethernet PHY with RMII interface for wired network connectivity

Bus Interfaces

WiFi 802.11 b/g/n
Bluetooth 4.2 + BLE
Ethernet 100Mbps
I2C
SPI
UART
MQTT

Olimex ESP32-POE

The Olimex ESP32-POE is an open-source hardware development board combining the ESP32 with wired Ethernet connectivity and Power-over-Ethernet support. Designed for industrial and professional IoT applications where WiFi alone is insufficient.

Key Features

  • ESP32-WROOM-32 dual-core at 240MHz with WiFi and Bluetooth
  • 100Mbps Ethernet via LAN8710A PHY with RJ45 connector
  • Power-over-Ethernet (PoE) — 802.3af compliant, single-cable power + data
  • Micro-SD card slot for data logging
  • LiPo battery connector with charging circuit
  • USB-C for programming
  • Open source hardware — schematics and PCB layout freely available

Tasmota Compatibility

  • Flash via USB or serial
  • Full Ethernet support in Tasmota with tasmota32 binary
  • Dual connectivity: WiFi + Ethernet simultaneously
  • Ideal for wired Tasmota installations (more reliable than WiFi)
  • MQTT over Ethernet for mission-critical automation

Use Cases

  • Wired smart home controller (no WiFi dependency)
  • Industrial sensor node with PoE (single cable installation)
  • Zigbee gateway host board (pair with Zigbee module via UART)
  • Data logging station with SD card
  • Ethernet-to-MQTT bridge
  • PoE-powered environmental monitor

Use Cases

6

Industrial IoT

Build robust industrial IoT solutions using CAN bus, RS-485, Modbus, and wired Ethernet interfaces.

wired-smart-home

poe-sensor-node

Data Logging

Recording time-stamped sensor readings, environmental data, or system events to local storage.

ethernet-mqtt-bridge

zigbee-gateway-host

Resources

Wiki / Documentation

Technical documentation

GitHub Repository

Source code & hardware files

Product Page

Official manufacturer page

Schematics

Circuit schematics

Where to Buy

Olimex favicon
Olimex
$24.95

Explore more of the directory — popular use cases, firmware, and specs to browse next.

3D PrintingWearableEspressifDIY KitESP32-S3 (Xtensa LX7 Dual-Core 240MHz)Compute Module802.11 b/g/n/actrueLTE Cat-42x 2.5 GigabitZigbee 3.0SX1276 (868/915MHz)Thread 1.31.0RepRapFirmwareCEopen-sourceApache-2.0ledArduinoDeveloper BoardESP32 (Xtensa LX6)ESP32-S2 Board2.4GHz 802.11 b/g/nBLE 5.44G LTE (optional)100Mbps Ethernet3.0SX1262 (868/915MHz)Thread (nRF52840)