FeatherS3 ESP32-S3 with u.FL by Unexpected Maker

Feather-format ESP32-S3 board (dual-core 240 MHz) with 16 MB flash, 8 MB PSRAM, USB-C, and a u.FL connector for an external antenna instead of a PCB trace antenna. Two 700 mA 3.3V LDOs, LiPo charging, 2× STEMMA connectors, 21 GPIO.

Logical pinout · physical placement not verified

VBAT1
Battery input pin from FeatherS3 KiCad symbol pin 1.
Type · Power
EN2
Enable input pin from FeatherS3 KiCad symbol pin 2.
Type · Control
5V3
5 V power input pin from FeatherS3 KiCad symbol pin 3.
Type · PowerVoltage · 5V
IO114
ESP32-S3 GPIO 11 bidirectional I/O from FeatherS3 KiCad symbol pin 4.
Type · GPIO
IO105
ESP32-S3 GPIO 10 bidirectional I/O from FeatherS3 KiCad symbol pin 5.
Type · GPIO
IO76
ESP32-S3 GPIO 7 bidirectional I/O from FeatherS3 KiCad symbol pin 6.
Type · GPIO
IO37
ESP32-S3 GPIO 3 bidirectional I/O from FeatherS3 KiCad symbol pin 7.
Type · GPIO
IO18
ESP32-S3 GPIO 1 bidirectional I/O from FeatherS3 KiCad symbol pin 8.
Type · GPIO
IO389
ESP32-S3 GPIO 38 bidirectional I/O from FeatherS3 KiCad symbol pin 9.
Type · GPIO
IO3310
ESP32-S3 GPIO 33 bidirectional I/O from FeatherS3 KiCad symbol pin 10.
Type · GPIO
IO911
ESP32-S3 GPIO 9 bidirectional I/O from FeatherS3 KiCad symbol pin 11.
Type · GPIO
IO812
ESP32-S3 GPIO 8 bidirectional I/O from FeatherS3 KiCad symbol pin 12.
Type · GPIO
LDO2_OUT13
LDO2 output power pin from FeatherS3 KiCad symbol pin 13.
Type · Power
TX14
UART TX bidirectional board pin from FeatherS3 KiCad symbol pin 14.
Type · UART
RX15
UART RX bidirectional board pin from FeatherS3 KiCad symbol pin 15.
Type · UART
IO3716
ESP32-S3 GPIO 37 bidirectional I/O from FeatherS3 KiCad symbol pin 16.
Type · GPIO
IO3517
ESP32-S3 GPIO 35 bidirectional I/O from FeatherS3 KiCad symbol pin 17.
Type · GPIO
IO3618
ESP32-S3 GPIO 36 bidirectional I/O from FeatherS3 KiCad symbol pin 18.
Type · GPIO
IO519
ESP32-S3 GPIO 5 bidirectional I/O from FeatherS3 KiCad symbol pin 19.
Type · GPIO
IO620
ESP32-S3 GPIO 6 bidirectional I/O from FeatherS3 KiCad symbol pin 20.
Type · GPIO
IO1221
ESP32-S3 GPIO 12 bidirectional I/O from FeatherS3 KiCad symbol pin 21.
Type · GPIO
IO1422
ESP32-S3 GPIO 14 bidirectional I/O from FeatherS3 KiCad symbol pin 22.
Type · GPIO
IO1823
ESP32-S3 GPIO 18 bidirectional I/O from FeatherS3 KiCad symbol pin 23.
Type · GPIO
IO1724
ESP32-S3 GPIO 17 bidirectional I/O from FeatherS3 KiCad symbol pin 24.
Type · GPIO
GND25
Ground pin from FeatherS3 KiCad symbol pin 25.
Type · GroundVoltage · 0V
IO026
ESP32-S3 GPIO 0 bidirectional I/O from FeatherS3 KiCad symbol pin 26.
Type · GPIO
3V327
3.3 V board power pin from FeatherS3 KiCad symbol pin 27.
Type · PowerVoltage · 3.3V
RST28
Reset input pin from FeatherS3 KiCad symbol pin 28.
Type · Control

Pin	Position	Type	Function	Voltage
VBAT	1	Power	Battery input pin from FeatherS3 KiCad symbol pin 1.
EN	2	Control	Enable input pin from FeatherS3 KiCad symbol pin 2.
5V	3	Power	5 V power input pin from FeatherS3 KiCad symbol pin 3.	5V
IO11	4	GPIO	ESP32-S3 GPIO 11 bidirectional I/O from FeatherS3 KiCad symbol pin 4.
IO10	5	GPIO	ESP32-S3 GPIO 10 bidirectional I/O from FeatherS3 KiCad symbol pin 5.
IO7	6	GPIO	ESP32-S3 GPIO 7 bidirectional I/O from FeatherS3 KiCad symbol pin 6.
IO3	7	GPIO	ESP32-S3 GPIO 3 bidirectional I/O from FeatherS3 KiCad symbol pin 7.
IO1	8	GPIO	ESP32-S3 GPIO 1 bidirectional I/O from FeatherS3 KiCad symbol pin 8.
IO38	9	GPIO	ESP32-S3 GPIO 38 bidirectional I/O from FeatherS3 KiCad symbol pin 9.
IO33	10	GPIO	ESP32-S3 GPIO 33 bidirectional I/O from FeatherS3 KiCad symbol pin 10.
IO9	11	GPIO	ESP32-S3 GPIO 9 bidirectional I/O from FeatherS3 KiCad symbol pin 11.
IO8	12	GPIO	ESP32-S3 GPIO 8 bidirectional I/O from FeatherS3 KiCad symbol pin 12.
LDO2_OUT	13	Power	LDO2 output power pin from FeatherS3 KiCad symbol pin 13.
TX	14	UART	UART TX bidirectional board pin from FeatherS3 KiCad symbol pin 14.
RX	15	UART	UART RX bidirectional board pin from FeatherS3 KiCad symbol pin 15.
IO37	16	GPIO	ESP32-S3 GPIO 37 bidirectional I/O from FeatherS3 KiCad symbol pin 16.
IO35	17	GPIO	ESP32-S3 GPIO 35 bidirectional I/O from FeatherS3 KiCad symbol pin 17.
IO36	18	GPIO	ESP32-S3 GPIO 36 bidirectional I/O from FeatherS3 KiCad symbol pin 18.
IO5	19	GPIO	ESP32-S3 GPIO 5 bidirectional I/O from FeatherS3 KiCad symbol pin 19.
IO6	20	GPIO	ESP32-S3 GPIO 6 bidirectional I/O from FeatherS3 KiCad symbol pin 20.
IO12	21	GPIO	ESP32-S3 GPIO 12 bidirectional I/O from FeatherS3 KiCad symbol pin 21.
IO14	22	GPIO	ESP32-S3 GPIO 14 bidirectional I/O from FeatherS3 KiCad symbol pin 22.
IO18	23	GPIO	ESP32-S3 GPIO 18 bidirectional I/O from FeatherS3 KiCad symbol pin 23.
IO17	24	GPIO	ESP32-S3 GPIO 17 bidirectional I/O from FeatherS3 KiCad symbol pin 24.
GND	25	Ground	Ground pin from FeatherS3 KiCad symbol pin 25.	0V
IO0	26	GPIO	ESP32-S3 GPIO 0 bidirectional I/O from FeatherS3 KiCad symbol pin 26.
3V3	27	Power	3.3 V board power pin from FeatherS3 KiCad symbol pin 27.	3.3V
RST	28	Control	Reset input pin from FeatherS3 KiCad symbol pin 28.

Logical pinout · physical placement not verified

Pin details

28 connections

VBAT
Battery input pin from FeatherS3 KiCad symbol pin 1.
Power
1
EN
Enable input pin from FeatherS3 KiCad symbol pin 2.
Control
2
5V
5 V power input pin from FeatherS3 KiCad symbol pin 3.
PowerVoltage · 5V
3
IO11
ESP32-S3 GPIO 11 bidirectional I/O from FeatherS3 KiCad symbol pin 4.
GPIO
4
IO10
ESP32-S3 GPIO 10 bidirectional I/O from FeatherS3 KiCad symbol pin 5.
GPIO
5
IO7
ESP32-S3 GPIO 7 bidirectional I/O from FeatherS3 KiCad symbol pin 6.
GPIO
6
IO3
ESP32-S3 GPIO 3 bidirectional I/O from FeatherS3 KiCad symbol pin 7.
GPIO
7
IO1
ESP32-S3 GPIO 1 bidirectional I/O from FeatherS3 KiCad symbol pin 8.
GPIO
8
IO38
ESP32-S3 GPIO 38 bidirectional I/O from FeatherS3 KiCad symbol pin 9.
GPIO
9
IO33
ESP32-S3 GPIO 33 bidirectional I/O from FeatherS3 KiCad symbol pin 10.
GPIO
10
IO9
ESP32-S3 GPIO 9 bidirectional I/O from FeatherS3 KiCad symbol pin 11.
GPIO
11
IO8
ESP32-S3 GPIO 8 bidirectional I/O from FeatherS3 KiCad symbol pin 12.
GPIO
12
LDO2_OUT
LDO2 output power pin from FeatherS3 KiCad symbol pin 13.
Power
13
TX
UART TX bidirectional board pin from FeatherS3 KiCad symbol pin 14.
UART
14
RX
UART RX bidirectional board pin from FeatherS3 KiCad symbol pin 15.
UART
15
IO37
ESP32-S3 GPIO 37 bidirectional I/O from FeatherS3 KiCad symbol pin 16.
GPIO
16
IO35
ESP32-S3 GPIO 35 bidirectional I/O from FeatherS3 KiCad symbol pin 17.
GPIO
17
IO36
ESP32-S3 GPIO 36 bidirectional I/O from FeatherS3 KiCad symbol pin 18.
GPIO
18
IO5
ESP32-S3 GPIO 5 bidirectional I/O from FeatherS3 KiCad symbol pin 19.
GPIO
19
IO6
ESP32-S3 GPIO 6 bidirectional I/O from FeatherS3 KiCad symbol pin 20.
GPIO
20
IO12
ESP32-S3 GPIO 12 bidirectional I/O from FeatherS3 KiCad symbol pin 21.
GPIO
21
IO14
ESP32-S3 GPIO 14 bidirectional I/O from FeatherS3 KiCad symbol pin 22.
GPIO
22
IO18
ESP32-S3 GPIO 18 bidirectional I/O from FeatherS3 KiCad symbol pin 23.
GPIO
23
IO17
ESP32-S3 GPIO 17 bidirectional I/O from FeatherS3 KiCad symbol pin 24.
GPIO
24
GND
Ground pin from FeatherS3 KiCad symbol pin 25.
GroundVoltage · 0V
25
IO0
ESP32-S3 GPIO 0 bidirectional I/O from FeatherS3 KiCad symbol pin 26.
GPIO
26
3V3
3.3 V board power pin from FeatherS3 KiCad symbol pin 27.
PowerVoltage · 3.3V
27
RST
Reset input pin from FeatherS3 KiCad symbol pin 28.
Control
28

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