TTGO T-Internet-POE Board Provides Ethernet, PoE, WiFi, Bluetooth for $16

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We’ve written about several ESP32 POE boards in the past including wESP32, but there’s now another one with LilyGO TTGO T-Internet-POE board offering Fast Ethernet, PoE,  as well as WiFI and Bluetooth connectivity through ESP32-WROVER-B module.

TTGO T-Internet-POE specifications:

  • Wireless Module – ESP32-WROVER-B with ESP32 dual-core WiSoC, 4MB flash, 8MB PSRAM
  • Storage – MicroSD card socket
  • Connectivity
    • 2.4 GHz 802.11b/g/n WiFi 4 and Bluetooth 5.1 via ESP32
    • 10/100M Ethernet via LAN8720A Ethernet PHY
  • Expansion – Unpopulated I/O header with UART, SPI, I2C, PWM, I2S, ADC; 3.3V I/O voltage
  • Debugging / Programming
    • Serial port via USB-C port and CP2104 USB to TTL chip (TBC)
    • 6-pin programming interface with Tx/Rx, IO0, Reset, 3.3V and GND
  • Misc – BOOT and reset buttons, 32.768MHz crystal oscillator
  • Power Supply
    • 5V via USB-C port up
    • 50V PoE via Pulse PA2369NL transformer and HanRun HR861153C PoE compliant RJ45 jack
    • SI3404 power management chip
  • Dimensions – 70 x 52.3 x 17mm
  • Weight – 26.85 grams
  • Temperature range – -40°C to +85°C
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There’s no much in terms of software apart from an Arduino Sketch initializing Ethernet and connecting to Baidu.

I’m not sure why the 6-pin programming interface is needed, but a separate CH340C based “Downloader” board with Micro USB and USB-C ports is sold as an option with the board.  ESP32 should be programmable via the USB-C port unless the specs are wrong, and there isn’t any on-board CP2104 chip… The board photos are not clear enough to confirm…

LilyGO TTGO T-Internet-POE board is sold with a dual-row header for GPIO pin on Aliexpress for $15.77 plus shipping. The Downloader board found on the same page adds $1.15 to the total.

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