Adafruit ESP32-S3 Feather 8MB with w.FL Antenna

Logical pinout · physical placement not verified

2 grouped connections are listed in the table but omitted from the graphic until individual pins are available.

USB-C
USB-C port used for powering and programming; USB power charges the LiPoly battery when connected.
Type · PowerVoltage · USB 5V input/output rail via USB jack, per Adafruit Learn.
LiPoly JST
JST 2-PH connector for a 3.7/4.2V LiPoly battery; powers the Feather and charges from USB.
Type · PowerVoltage · 3.7/4.2V LiPoly battery, 250mAh or larger, per Adafruit Learn.
GND
Common ground for power and logic.
Type · GroundVoltage · 0V reference.
BAT
Positive voltage to/from the 2-pin JST battery jack.
Type · PowerVoltage · Battery positive rail from optional LiPoly cell.
USB
Positive voltage to/from the USB-C jack when USB is connected.
Type · USBVoltage · USB positive rail.
EN
3.3V regulator enable; pulled up, connect to ground to disable the regulator.
Type · ControlVoltage · 3.3V regulator enable logic.
3.3V
Output from the 3.3V regulator.
Type · PowerVoltage · 3.3V output, 500mA peak per Adafruit Learn.
SCK
SPI clock pin on the ESP32-S3 high-speed peripheral.
Type · SPIVoltage · 3.3V logic.
MOSI
SPI microcontroller-out / sensor-in pin.
Type · SPIVoltage · 3.3V logic.
MISO
SPI microcontroller-in / sensor-out pin.
Type · SPIVoltage · 3.3V logic.
RX
UART receive pin; connect to TX on a sensor or breakout.
Type · UARTVoltage · 3.3V logic.
TX
UART transmit pin; connect to RX on a sensor or breakout.
Type · UARTVoltage · 3.3V logic.
SCL
I2C clock pin shared with the STEMMA QT connector; Adafruit states a 5k pull-up is present.
Type · I2CVoltage · 3.3V logic with pull-up.
SDA
I2C data pin shared with the STEMMA QT connector; Adafruit states a 5k pull-up is present.
Type · I2CVoltage · 3.3V logic with pull-up.
STEMMA QT
JST SH 4-pin STEMMA QT connector breaking out I2C: SCL, SDA, 3.3V, and GND.
Type · I2CVoltage · 3.3V I2C connector.
D5-D6D9-D13
Digital pins; D5, D6, D9 and D10 are on ADC1, D11-D13 are on ADC2.
Type · GPIOVoltage · 3.3V logic.
A0-A5
Six analogue-capable pins; A0 through A4 on ADC2 and A5 on ADC1. Adafruit notes no true analogue output DAC.
Type · AnalogVoltage · 3.3V ADC input domain.
NEOPIXEL
On-board addressable RGB NeoPixel LED available as board.NEOPIXEL / PIN_NEOPIXEL.
Type · UnknownVoltage · On-board 3.3V controlled LED.
LED#13
On-board red LED labelled #13, controllable as board.LED / LED_BUILTIN / 13.
Type · UnknownVoltage · On-board 3.3V controlled LED.

Pin	Type	Function	Voltage
USB-C	Power	USB-C port used for powering and programming; USB power charges the LiPoly battery when connected.	USB 5V input/output rail via USB jack, per Adafruit Learn.
LiPoly JST	Power	JST 2-PH connector for a 3.7/4.2V LiPoly battery; powers the Feather and charges from USB.	3.7/4.2V LiPoly battery, 250mAh or larger, per Adafruit Learn.
GND	Ground	Common ground for power and logic.	0V reference.
BAT	Power	Positive voltage to/from the 2-pin JST battery jack.	Battery positive rail from optional LiPoly cell.
USB	USB	Positive voltage to/from the USB-C jack when USB is connected.	USB positive rail.
EN	Control	3.3V regulator enable; pulled up, connect to ground to disable the regulator.	3.3V regulator enable logic.
3.3V	Power	Output from the 3.3V regulator.	3.3V output, 500mA peak per Adafruit Learn.
SCK	SPI	SPI clock pin on the ESP32-S3 high-speed peripheral.	3.3V logic.
MOSI	SPI	SPI microcontroller-out / sensor-in pin.	3.3V logic.
MISO	SPI	SPI microcontroller-in / sensor-out pin.	3.3V logic.
RX	UART	UART receive pin; connect to TX on a sensor or breakout.	3.3V logic.
TX	UART	UART transmit pin; connect to RX on a sensor or breakout.	3.3V logic.
SCL	I2C	I2C clock pin shared with the STEMMA QT connector; Adafruit states a 5k pull-up is present.	3.3V logic with pull-up.
SDA	I2C	I2C data pin shared with the STEMMA QT connector; Adafruit states a 5k pull-up is present.	3.3V logic with pull-up.
STEMMA QT	I2C	JST SH 4-pin STEMMA QT connector breaking out I2C: SCL, SDA, 3.3V, and GND.	3.3V I2C connector.
D5-D6D9-D13	GPIO	Digital pins; D5, D6, D9 and D10 are on ADC1, D11-D13 are on ADC2.	3.3V logic.
A0-A5	Analog	Six analogue-capable pins; A0 through A4 on ADC2 and A5 on ADC1. Adafruit notes no true analogue output DAC.	3.3V ADC input domain.
NEOPIXEL	Unknown	On-board addressable RGB NeoPixel LED available as board.NEOPIXEL / PIN_NEOPIXEL.	On-board 3.3V controlled LED.
LED#13	Unknown	On-board red LED labelled #13, controllable as board.LED / LED_BUILTIN / 13.	On-board 3.3V controlled LED.

Logical pinout · physical placement not verified

2 grouped connections are omitted from the graphic until individual pins are available.

Pin details

19 connections

USB-C
USB-C port used for powering and programming; USB power charges the LiPoly battery when connected.
PowerVoltage · USB 5V input/output rail via USB jack, per Adafruit Learn.
LiPoly JST
JST 2-PH connector for a 3.7/4.2V LiPoly battery; powers the Feather and charges from USB.
PowerVoltage · 3.7/4.2V LiPoly battery, 250mAh or larger, per Adafruit Learn.
GND
Common ground for power and logic.
GroundVoltage · 0V reference.
BAT
Positive voltage to/from the 2-pin JST battery jack.
PowerVoltage · Battery positive rail from optional LiPoly cell.
USB
Positive voltage to/from the USB-C jack when USB is connected.
USBVoltage · USB positive rail.
EN
3.3V regulator enable; pulled up, connect to ground to disable the regulator.
ControlVoltage · 3.3V regulator enable logic.
3.3V
Output from the 3.3V regulator.
PowerVoltage · 3.3V output, 500mA peak per Adafruit Learn.
SCK
SPI clock pin on the ESP32-S3 high-speed peripheral.
SPIVoltage · 3.3V logic.
MOSI
SPI microcontroller-out / sensor-in pin.
SPIVoltage · 3.3V logic.
MISO
SPI microcontroller-in / sensor-out pin.
SPIVoltage · 3.3V logic.
RX
UART receive pin; connect to TX on a sensor or breakout.
UARTVoltage · 3.3V logic.
TX
UART transmit pin; connect to RX on a sensor or breakout.
UARTVoltage · 3.3V logic.
SCL
I2C clock pin shared with the STEMMA QT connector; Adafruit states a 5k pull-up is present.
I2CVoltage · 3.3V logic with pull-up.
SDA
I2C data pin shared with the STEMMA QT connector; Adafruit states a 5k pull-up is present.
I2CVoltage · 3.3V logic with pull-up.
STEMMA QT
JST SH 4-pin STEMMA QT connector breaking out I2C: SCL, SDA, 3.3V, and GND.
I2CVoltage · 3.3V I2C connector.
D5-D6D9-D13
Digital pins; D5, D6, D9 and D10 are on ADC1, D11-D13 are on ADC2.
GPIOVoltage · 3.3V logic.
A0-A5
Six analogue-capable pins; A0 through A4 on ADC2 and A5 on ADC1. Adafruit notes no true analogue output DAC.
AnalogVoltage · 3.3V ADC input domain.
NEOPIXEL
On-board addressable RGB NeoPixel LED available as board.NEOPIXEL / PIN_NEOPIXEL.
UnknownVoltage · On-board 3.3V controlled LED.
LED#13
On-board red LED labelled #13, controllable as board.LED / LED_BUILTIN / 13.
UnknownVoltage · On-board 3.3V controlled LED.

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