# Seeed XIAO ESP32-S3 Sense (Seeed Studio)

> The XIAO ESP32-S3 with a camera, microphone and microSD slot on an expansion board.

- **Category:** Boards & controllers
- **Availability:** Listed by maker
- **Price:** US$13.99 (at seeedstudio.com), checked 2026-09-18
- **Good for:** Get a camera and microphone onto a tiny Wi-Fi board for vision or audio experiments.
- **You'll need:** USB-C cable, a microSD card if you want to record, and the supplied antenna.
- **Trade-off:** Camera model varies by batch, and the expansion board is what carries every sensor.
- **Page:** https://gadgets.sh/devices/seeed-xiao-esp32s3-sense/

## Where to buy

| Shop | Status | Link |
|---|---|---|
| Seeed Studio | Orderable | https://www.seeedstudio.com/XIAO-ESP32S3-Sense-p-5639.html?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=seeed-xiao-esp32s3-sense&utm_content=api |
| Amazon (Seeed Studio Official) | Orderable | https://www.amazon.com/dp/B0C69FFVHH?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=seeed-xiao-esp32s3-sense&utm_content=api |
| DigiKey | Orderable | https://www.digikey.com/en/products/detail/seeed-technology-co-ltd/113991115/18724504?utm_source=gadgets.sh&utm_medium=referral&utm_campaign=seeed-xiao-esp32s3-sense&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-sense&utm_content=api |

## Blueprint

**Schematics published.** Seeed publishes a dedicated Sense-variant schematic PDF (adds camera + mic wiring) and the ESP32-S3 datasheet; the related GitHub repo has only a footprint/pinout library, not the module's own PCB source.

### Design files

- schematic: [XIAO ESP32S3 Sense schematic (PDF, rev 1.5)](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/new-res/202003753_XIAO%20ESP32S3%20Sense_v1.5_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: [Pinout diagram, Sense variant, front (PNG)](https://github.com/Seeed-Studio/OSHW-XIAO-Series/blob/main/pinout/XIAO_ESP32-S3_Sense_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 |
| OmniVision OV2640 | Detachable camera sensor (up to 1600x1200) |  |

_Notes:_ OV2640 identified via multiple retailer listings (Seeed product page, Amazon, RobotShop); no manufacturer datasheet URL included since OmniVision doesn't host one I could verify live. The Sense schematic differs from the base XIAO ESP32S3 file (adds camera/mic/SD wiring).

## Specifications

### Processor & memory

| | |
|---|---|
| Processor | ESP32-S3R8, dual-core 32-bit Xtensa LX7 at up to 240 MHz |
| Memory | 8 MB PSRAM and 8 MB flash on-chip |
| Storage | microSD slot on the expansion board, supporting 32 GB FAT |
| Dimensions | 21 × 17.8 × 15 mm with the expansion board fitted |

### Sensors

| | |
|---|---|
| Camera | One OV3660 sensor on current boards; the maker states the earlier OV2640 is discontinued and that wiki sample code still applies |
| Microphone | One digital microphone on the expansion board |
| Where they live | Camera, microphone and SD slot are all on the Sense expansion board, not the processor board |

### Radio, interfaces & power

| | |
|---|---|
| Wireless | Complete 2.4 GHz Wi-Fi subsystem with Bluetooth LE 5.0 and Bluetooth mesh |
| Buses | 1× UART, 1× I²C, 1× I²S and 1× SPI |
| Pins | 11 PWM-capable GPIO and 9 ADC, plus a board-to-board connector carrying two more GPIO |
| Controls | Reset button, boot button, user LED and charge LED |
| Power input | 5 V over USB-C, or 3.7 V on the battery pin |
| Price checked | US$13.99 at the maker's store |

## Documentation

- [Maker specifications and documentation](https://wiki.seeedstudio.com/xiao_esp32s3_getting_started/)
- [Seeed Studio store listing](https://www.seeedstudio.com/XIAO-ESP32S3-Sense-p-5639.html)
- [Espressif ESP32-S3 datasheet](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/esp32-s3_datasheet.pdf)
- [XIAO ESP32-S3 Sense v1.5 schematic](https://files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/new-res/202003753_XIAO%20ESP32S3%20Sense_v1.5_SCH_260226.pdf.pdf)

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