So he took it upon himself to modify some cheap Power Over Ethernet (PoE ... is configured by changing the values of resistors in the circuit. Swapping out the stock 21.5 kΩ resistor for ...

This open-source gem uses the wESP32 board, which combines an ESP32 with Ethernet and Power over Ethernet (PoE) for robust, reliable connectivity. Check out the Crowd Supply campaign for details.