Seeed XIAO ESP32-S3 (& Sense)
Also known as: XIAO ESP32-S3 · XIAO ESP32S3 Sense
The smallest practical ESP32-S3 board (21 x 17.5 mm) with LiPo charging. The 'Sense' add-on (OV2640/OV3660 camera plus mic plus microSD) makes it a go-to for TinyML and on-device vision/audio.
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At a glance
⚑ flag an error| SoC | ESP32-S3 |
|---|---|
| Vendor | Seeed Studio |
| Type | Tiny / minimal |
| Memory | 8 MB flash · 8 MB PSRAM |
| Display | None |
| Connectivity | Wi-Fi, BLE 5, U.FL antenna |
| USB | USB-C |
| Battery | Yes (onboard LiPo charging) |
| Typical price | $7-14 (street, varies) |
Good for
Gotchas to know
- Few pins for the size.
- Camera, microphone and microSD are only on the 'Sense' expansion board.
- Keep the U.FL/onboard antenna attached.
Variants
Plain XIAO ESP32-S3 vs 'Sense' (camera/mic/SD). Same footprint also offered as XIAO ESP32-C3 / C6.
The ESP32-S3 inside
This board is built on the ESP32-S3 . See the SoC page for the full peripheral, GPIO and security details.
Bare modules on the same SoC:
Resources
Community guides usually go deeper than this page: pinout diagrams, wiring, library setup and copy-paste example code from people who build with these boards daily.