Esta placa de desenvolvimento com ESP-WROOM-32 trabalha a 3.3V.
Pinout da dev board ESP32

Internal LED on pin 2
Especificações
- Microcontrolador: x2
Instalar a board (ESP-WROOM-32) no Arduino IDE
- File > Preferences
- Em Additional Board Manager URLs, inserir:
https://dl.espressif.com/dl/package_esp32_index.json
- Em Additional Board Manager URLs, inserir:
- Tools > Board > Boards Manager
Instalar: esp32 by Expressif
Usar a board (ESP-WROOM-32) no Arduino IDE
Escolher Board e Respectiva configuração
Tools >
- Board: ESP32 Dev Module
- Upload Speed: 115200
- CPU frequency: 240
- Flash frequency: 80
- Flash mode: QIO
- Flash Size: 4M (32Mb)
- Partition Scheme: Default
- Core Debug Level: None
- PSRAM: Disable
Pinout
Datasheet e Driver
ESP32-WROOM-32 Win10 serial driver
Links
https://www.espressif.com/en/products/hardware/esp-wroom-32/overview
https://github.com/espressif/arduino-esp32