LilyGO-T-ETH-POE (aka: TTGO T-Internet-POE)

• Official module info: http://www.lilygo.cn/prod_view.aspx?TypeId=50033&Id=1307&FId=t3:50033:3
• Example code: https://github.com/Xinyuan-LilyGO/LilyGO-T-ETH-POE

Module Type

• My circuitboard indicates v1.0 on the back
  • date code on the back: 20-7-20
  • ESP32-WROOM without PSRAM
• There also exists a v1.2
  • date code on the back: 20-5-15
  • supposedly discontinued
  • ESP32-WROVER-B with 8MB of PSRAM (from which 4MB can be easily accessible from Arduino sketch)
  • See the comment behind ETH_CLK_MODE in the code to change it if you have a v1.2 board

Arduino IDE settings for this specific board

• Board: ESP32 WROVER module
• Upload speed: 115200
• the other settings I left to default

Some additional information and notes

• The onboard blue LED near the USB-C port is only a power indicator (hard wired between 3,3V and GND)
• You can connect/power the board in 3 ways:
  • Connect the Ethernet interface to a PoE port
  • Connect the Ethernet interface to a non-PoE port and connect the USB-C interface onboard to 5V (power only, no programming interface!)
  • Connect the Ethernet interface to a non-PoE port, attach the programming module to the backside and connect this last one through USB-C or micro-USB to 5V power
• When you attach the programming module you should disconnect power through the USB-C port onboard (and I guess the same goes if you connect to PoE delivery port)!