Table of Contents

ESP32 with Ethernet Socket: ET32-ETH01

Connecting External RS232 Adapter

(Cable colors are from the Pylonmon adapter)

ESP32 Serial Converter Color
GND GND Green
3.3v Vcc White
TxD TxD Gray
RxD RxD Pink

Connecting USB/Serial Adapter for Flashing

ESP32 Serial Converter
GND GND
5v 5V
Tx0 RxD
Rx0 TxD

The jumper on the Serial Converter must be set to 5V (not 3.3V).

Before flashing, IO0 must be connected to GND, then power on. This will activate Flash mode upon power-up.