Adafruit ESP32-S3 Feather Development Board (5323)
Adafruit ESP32-S3 Feather

Available from:


Install method:
USB to Serial

GPIO #Component
Configuration for ESP32-S3
{"NAME":"ESP32-S3 Feather","GPIO":[0,0,0,608,640,1,1,3840,1,1,1,1,1,1,1,1,1,1,1,0,0,3840,1376,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0],"FLAG":0,"BASE":1}

A Feather form factor ESP32-S3 dev board with 1S LiPo battery monitoring.

This board uses an ESP32-S3-MINI-1-P1N8 module with 8MB of flash and no PSRAM.

When the board is booted into debug by holding BOOT and pressing the RESET button the USB-Serial chip on the USB port exposes a serial connection. This can be used to easily flash new firmware.


Flash using Tasmota Web Installer and select Tasmota ESP32-S3 option.

For esptool.py download f.e. tasmota32s3.factory.bin and run esptool.py write_flash 0x0 tasmota32s3.factory.bin

To put ESP32-S3 in flash mode GPIO0 needs to be pulled low.

Device Notes

Adafruit ESP32-S3 Feather Front and Back

Adafruit ESP32-S3 Feather Pinout

Product Guide

PCB Files


  • WS2812B Neopixel
    • On GPIO33 (configured as WS2812) with power on GPIO21 (configured as Output Hi).
  • 2x STEMMA-QT JST-SH I2C bus connector
    • Both ports share the same bus, on GPIO3 (SCL) and GPIO4 (SDA) (configured as I2C 1) and GPIO7 for power (configured as Output Hi). These ports are on the same bus as the SCL and SDA pins labelled on the board.