Loading source-backed pinouts…
Microcontroller
Seeed Studio XIAO ESP32S3
A tiny ESP32-S3 board for wireless embedded projects where space matters but Wi-Fi, BLE, and native USB are still needed.
Processor
ESP32-S3
Logic
3.3 V GPIO
Power
USB-C, 5 V, 3.3 V rail
Format
Tiny XIAO module
Check before wiring
- Ships without pin headers by default.
- Small module power and antenna placement matter in enclosures.
Interfaces
GPIOI2CSPIUARTADCPWMUSBWi-FiBluetooth
Source-backed connector
Interactive pin map
Pin map
Connector
XIAO 14 castellated pads
USB-C at top, component side up, 7 pads down each long edge
Simplified technical illustration. Pin data is source-backed; verify against the linked documentation before wiring.
Hover, tap, or focus a pad to inspect a pin. Use arrow keys to move between pins.
- USB-C at top, component side up; labels follow Seeed's XIAO ESP32S3 pin multiplexing table.
- GPIO is 3.3 V only and is not 5 V tolerant.
- Sense-board B2B-only pins are not shown on this base 14-pad map.
All 14 pins (table)
| # | Signal | Role | Net | Also / notes |
|---|---|---|---|---|
| 1 | ADC | GPIO1 | ||
| 2 | ADC | GPIO2 | ||
| 3 | ADC | GPIO3 | ||
| 4 | ADC | GPIO4 | ||
| 5 | I2C | I2C | GPIO5 | |
| 6 | I2C | I2C | GPIO6 | |
| 7 | UART | UART | GPIO43 | |
| 14 | Power | 5V | ||
| 13 | Ground | GND | ||
| 12 | Power | 3V3 | ||
| 11 | SPI | SPI | GPIO9 | |
| 10 | SPI | SPI | GPIO8 | |
| 9 | SPI | SPI | GPIO7 | |
| 8 | UART | UART | GPIO44 |
Why it matters
- Official Seeed docs show the XIAO ESP32S3 pinout and setup flow.
- Good for compact IoT, cameras, and wearable prototypes.
- Works with the broader XIAO expansion ecosystem.
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