# Seeed XIAO ESP32-S3 (Seeed Studio)

> Fit Wi-Fi and Bluetooth control into a small custom board.

- **Category:** Boards & controllers
- **Availability:** Listed by maker
- **Price:** US$7.49 (at seeedstudio.com), checked 2026-09-16
- **Good for:** Fit Wi-Fi and Bluetooth control into a small custom board.
- **You'll need:** USB cable, antenna and the peripherals required by your firmware.
- **Trade-off:** Base board lacks Sense camera/microphone and a dedicated battery-voltage ADC.
- **Page:** https://gadgets.sh/devices/seeed-xiao-esp32s3/

## Where to buy

| Shop | Status | Link |
|---|---|---|
| Seeed Studio | Orderable | https://www.seeedstudio.com/XIAO-ESP32S3-p-5627.html?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=seeed-xiao-esp32s3&utm_content=api |
| Amazon (Seeed Studio Official) | Orderable | https://www.amazon.com/dp/B0BYSB66S5?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=seeed-xiao-esp32s3&utm_content=api |
| DigiKey | Orderable | https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/113991114/19285530?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=seeed-xiao-esp32s3&utm_content=api |
| Seeed Studio | Documentation at wiki.seeedstudio.com | https://wiki.seeedstudio.com/xiao_esp32s3_getting_started/?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=seeed-xiao-esp32s3&utm_content=api |

## Blueprint

**Schematics published.** Seeed publishes the schematic PDF, a dimensioning drawing, and the chip datasheet for the XIAO ESP32S3; the related GitHub repo has only a footprint/pinout library, not the module's own PCB source.

### Design files

- schematic: [XIAO ESP32S3 schematic (PDF, rev 1.4)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/new-res/202003751_XIAO%20ESP32S3_v1.4_SCH_260226.pdf.pdf) (PDF)
- datasheet: [ESP32-S3 datasheet (PDF)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/esp32-s3_datasheet.pdf) (PDF)
- pinout: [Board dimensioning drawing (DXF)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/XIAO_ESP32S3_v1.1_Dimensioning.dxf) (DXF)
- pinout: [Pinout diagram, front (PNG)](https://github.com/Seeed-Studio/OSHW-XIAO-Series/blob/main/pinout/XIAO_ESP32-S3_front_pinout.png) (PNG)

### Source repositories

- [Seeed-Studio/OSHW-XIAO-Series](https://github.com/Seeed-Studio/OSHW-XIAO-Series) — docs, MIT, ★91

### Key parts

| Part | Role | Datasheet |
|---|---|---|
| Espressif ESP32-S3R8 | MCU (dual Xtensa LX7, Wi-Fi/BLE, 8 MB PSRAM) | https://www.espressif.com/sites/default/files/documentation/esp32-s3_datasheet_en.pdf |

_Notes:_ A 'Plus' variant schematic and a separate ExpBoard breakout also exist on files.seeedstudio.com but are different accessory boards, not listed here since this device slug is the base ESP32S3 module.

## Specifications

### Base board

| | |
|---|---|
| Processor | ESP32-S3R8; dual-core 32-bit Xtensa LX7 up to 240 MHz |
| Memory | 8 MB PSRAM and 8 MB flash; Plus has 16 MB flash |
| Wireless | 2.4 GHz Wi-Fi and Bluetooth LE |
| Dimensions | 21 × 17.8 mm |
| Antenna | External U.FL antenna; attach the supplied antenna for wireless use |

### Interfaces & power

| | |
|---|---|
| USB | USB-C power/programming; nominal 5 V |
| Battery | 3.7 V rechargeable battery support and charge management |
| Buses | 11 digital/PWM pins; 9 ADC channels; one UART, I²C and SPI bus |
| I²C pins | D4/GPIO5 SDA; D5/GPIO6 SCL |
| UART pins | D6/GPIO43 TX; D7/GPIO44 RX |
| SPI pins | D8/GPIO7 SCK, D9/GPIO8 MISO, D10/GPIO9 MOSI |
| Controls | Boot, reset and active-low user LED on GPIO21 |
| Low-power figures | Base board: 27 mA modem sleep, 2 mA light sleep, 14 µA deep sleep at 3.8 V, typical maker values |
| Temperature | −20 to 65 °C |
| Analog header pins | D0–D3 map to GPIO1–GPIO4. |
| 3V3 output | Wiki rates the regulated 3.3 V output at 700 mA. |
| External 5 V | Maker requires a diode when feeding the 5 V pin externally. |
| Battery-only limit | The 5 V pin has no output when powered only by the battery. |
| Battery monitoring | Base board has no dedicated battery-voltage ADC connection. |
| Charging figures | Base-board table: 50 mA fast charge; 3.8 mA trickle, typical. |
| Active current | Typical base-board figures: Wi-Fi 100 mA; BLE 85 mA. |
| V1.4 power components | Published V1.4 schematic: SGM40567-4.2 charger; SGM6029 regulator. |

### Variants & setup

| | |
|---|---|
| Base package | Pin headers are not installed by default |
| Sense expansion | Camera, digital microphone and microSD slot are on the Sense expansion board |
| Camera revisions | Later Sense batches use OV3660 instead of discontinued OV2640; optional OV5640 also supported |
| Plus difference | Its board connector supports Wio-SX1262; it is not compatible with the plug-in camera board |
| Programming | Arduino: select XIAO ESP32-S3. MicroPython is also documented. |
| Pin caveat | GPIO41/42 do not support ADC despite analog labels in parts of the wiki |
| USB recovery | Hold BOOT while connecting a data-capable USB cable, or hold BOOT and press reset. |
| Reset-sensitive pins | GPIO0/46 choose boot mode; GPIO45 affects flash voltage; GPIO3 selects JTAG source. |
| Factory demo | Base firmware lights the user LED when a touch-capable pin is touched. |

## Documentation

- [Maker specifications and documentation](https://wiki.seeedstudio.com/xiao_esp32s3_getting_started/)
- [Espressif ESP32-S3 Datasheet](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/esp32-s3_datasheet.pdf)
- [XIAO ESP32-S3 Schematic](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/new-res/202003751_XIAO%20ESP32S3_v1.4_SCH_260226.pdf.pdf)
- [XIAO ESP32-S3 Dimension in DXF](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/XIAO_ESP32S3_v1.1_Dimensioning.dxf)
- [XIAO ESP32-S3 Sense Schematic](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/new-res/202003753_XIAO%20ESP32S3%20Sense_v1.5_SCH_260226.pdf.pdf)
- [XIAO ESP32-S3 ExpBoard Schematic](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/XIAO_ESP32S3_ExpBoard_v1.0_SCH.pdf)
- [XIAO ESP32-S3 Sense Dimension in DXF (Top)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/XIAO_ESP32S3_ExpBoard_v1.0_top.dxf)
- [XIAO ESP32-S3 Sense Dimension in DXF (Bottom)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/XIAO_ESP32S3_ExpBoard_v1.0_bot.dxf)
- [XIAO ESP32-S3 Plus Schematic](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/XIAO_ESP32S3_Plus_V1.1_SCH_260115.pdf)
- [XIAO ESP32-S3 Plus Dimension in DXF (Top)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/TOP.dxf)
- [XIAO ESP32-S3 Plus Dimension in DXF (Bottom)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/BOTTOM.dxf)

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Source: gadgets.sh · https://gadgets.sh/devices/seeed-xiao-esp32s3/ · JSON: https://gadgets.sh/api/v1/devices/seeed-xiao-esp32s3.json