ESP32-PoE 16MB Development Board | ATMOSFÆR ENGINEERING

Industrial-grade ESP32 development board with Power-over-Ethernet (PoE) capability and 16MB flash memory. Features wired Ethernet (10/100 Mbps) with IEEE 802.3af PoE support, eliminating the need for separate power supplies. Includes LiPo battery management, microSD slot, and extensive GPIO breakout. Ideal for IoT gateways, industrial automation, remote monitoring, and applications requiring reliable wired connectivity with backup power.

Technical Specifications:

• MCU: ESP32-WROOM-32E (Dual-core Xtensa LX6)
• Clock Speed: Up to 240 MHz
• Flash Memory: 16MB
• SRAM: 520KB
• PSRAM: 4MB (8MB on some variants)
• Wireless: WiFi 802.11 b/g/n (2.4GHz), Bluetooth 4.2 BR/EDR + BLE
• Ethernet: 10/100 Mbps (LAN8710A PHY)
• PoE: IEEE 802.3af compliant (Power-over-Ethernet)
• Power Input: PoE (37-57V), USB (5V), or LiPo battery (3.7V)
• USB: USB-C for programming and power
• Battery: LiPo charging circuit with protection
• microSD: Full-size microSD card slot
• GPIO: 30+ accessible pins
• ADC: 18 channels (12-bit)
• DAC: 2 channels (8-bit)
• Interfaces: SPI, I2C, I2S, UART, CAN
• RTC: Real-time clock support
• Operating Temperature: -40°C to +85°C
• Board Dimensions: 65mm x 38mm (approximate)

Power Options:

• PoE: IEEE 802.3af (15.4W available, board uses ~2-3W typical)
• USB-C: 5V input for programming and power
• LiPo Battery: 3.7V with onboard charging and protection
• GPIO: Can power from external 5V on header pins

Features:

• Power-over-Ethernet eliminates separate power adapter
• 16MB flash for large applications and OTA updates
• Wired Ethernet for reliable, high-speed connectivity
• LiPo battery backup (automatic switchover on power loss)
• Industrial temperature range (-40°C to +85°C)
• microSD card for data logging and storage
• CE and FCC certified (open-source hardware)
• All GPIOs broken out on 0.1" headers
• UEXT connector for Olimex modules
• CAN bus transceiver onboard
• Built-in voltage regulators
• Reset and Boot buttons

Pin Breakout:

• 30+ GPIO pins on standard 0.1" headers
• I2C, SPI, UART accessible
• ADC/DAC pins available
• CAN TX/RX pins
• UEXT connector (I2C, SPI, UART combined)

Applications:

• Industrial IoT gateways
• Building automation and BMS systems
• Remote monitoring and data logging
• Ethernet-connected sensor networks
• Home automation hubs (wired + WiFi)
• Industrial control systems
• Security systems with battery backup
• Web servers and API endpoints
• MQTT brokers and edge computing
• POE-powered cameras and sensors
• Factory floor monitoring
• Agricultural automation

Advantages:

• PoE: Single cable for power + data (simplified installation)
• Reliability: Wired Ethernet more stable than WiFi
• Battery Backup: Continues operation during power outages
• Large Flash: 16MB supports complex applications and OTA
• Industrial Grade: Wide temperature range, robust design
• Open Hardware: Full schematics available

Use Cases:

• Deploy sensors in areas with Ethernet but no power outlets
• Reliable data acquisition without WiFi interference
• Battery-backed monitoring systems
• Industrial environments requiring wired connectivity

Important Notes:

• Requires PoE-capable switch or PoE injector for PoE power
• Can use USB-C or battery if PoE not available
• LiPo battery charges automatically when powered via PoE/USB
• Supports Arduino IDE, ESP-IDF, MicroPython, Tasmota
• Extensive documentation and examples from Olimex

Power Consumption:

• Active (WiFi): ~160-260mA
• Active (Ethernet only): ~150-200mA
• Deep sleep: <5mA
• PoE provides ample power for peripherals

Programming:

• Arduino IDE (select "Olimex ESP32-PoE" board)
• ESP-IDF (native Espressif framework)
• MicroPython
• PlatformIO

Compatible with Arduino ecosystem, ESP32 libraries, and supports OTA updates. Includes example code and extensive community support. Perfect for professional and industrial IoT deployments requiring wired connectivity.