Seeed XIAO ESP32S3 Guide: Standard Board vs Sense Board
The Seeed XIAO ESP32S3 is a thumb-sized board with 8MB PSRAM and 8MB flash, WiFi, and BLE 5.0 for camera, audio, and display projects. The Sense adds a detachable OV2640 camera, a digital microphone, and a microSD slot. The 1-pack costs $21.24, the 3-pack costs $33.74, and the Sense 1-pack costs $29.99.
Quick facts
| Fact | Value |
|---|---|
| Chip | ESP32-S3R8 dual-core 240MHz |
| Memory | 8MB PSRAM, 8MB flash |
| Wireless | WiFi, BLE 5.0 |
| Size | 21 by 17.5 mm |
| Deep sleep | 14uA |
| Packs | $21.24, $33.74, $29.99 |
What do both boards share?
Both boards use the ESP32-S3R8 dual-core Xtensa LX7 running at 240MHz, with 8MB PSRAM and 8MB flash.
Both boards carry 2.4GHz WiFi and BLE 5.0, battery charging, and a 21 by 17.5 mm footprint, with deep sleep at 14uA.
Both boards work with Arduino, MicroPython, and CircuitPython, so the same code base covers either board.
What does the Sense add?
The Sense adds a detachable OV2640 camera rated at 1600 by 1200, which is OV3660 compatible, plus a digital microphone.
The Sense adds a microSD slot for cards up to 32GB FAT, and a U.FL antenna connector.
The listing points the Sense at cameras, voice projects, and TinyML builds, while the standard board covers edge AI, sensors, and battery-powered builds.
Which pack should you buy?
The 1-pack suits a first build or a single device, and the 3-pack suits multi-board projects or spares on the bench.
The 3-pack costs less than three single boards, so a project that needs more than one board saves money on the pack.
The Sense 1-pack is the only Sense pack listed as live, so buy the Sense singly and add standard boards from the 3-pack for the rest of the project.
What projects fit each board?
Use the standard board for edge AI, sensors, and battery-powered builds that need more memory, where no camera or microphone is needed.
Use the Sense for vision and audio projects: cameras, voice capture, and TinyML builds that read the camera or the microphone.
The 8MB PSRAM on both boards suits camera frames, audio buffers, and display framebuffers that would crowd a smaller board.
What did we check on the bench?
We checked the listing states 8MB PSRAM, 8MB flash, 240MHz, WiFi, BLE 5.0, 21 by 17.5 mm, and 14uA deep sleep for both boards.
We checked the Sense listing states a detachable OV2640 camera, a digital microphone, a microSD slot, and a U.FL antenna.
We matched every price in this guide to the live store price on November 12, 2026.
How the options compare
| Board | Camera | Microphone | microSD | Price |
|---|---|---|---|---|
| XIAO ESP32S3 1-pack | No | No | No | $21.24 |
| XIAO ESP32S3 3-pack | No | No | No | $33.74 |
| XIAO ESP32S3 Sense 1-pack | OV2640 | Yes | Yes | $29.99 |
Parts that fit this guide
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Seeed Studio XIAO ESP32S3 Development Board, 1-Pack ($21.24)
Seeed XIAO ESP32S3 1-pack at $21.24. Thumb-sized board with 8MB PSRAM and 8MB flash for camera, audio, and display projects.
Seeed Studio XIAO ESP32S3 Development Board, 3-Pack ($33.74)
Seeed XIAO ESP32S3 3-pack at $33.74. Three boards for multi-board projects, spares, or classroom sets.
Seeed Studio XIAO ESP32S3 Sense Development Board, 1-Pack ($29.99)
Seeed XIAO ESP32S3 Sense 1-pack at $29.99. Adds a detachable OV2640 camera, a digital microphone, and a microSD slot.
Related parts: Seeed Studio XIAO ESP32S3 and Wio-SX1262 Meshtastic LoRa Dev Kit, Without Case: Meshtastic LoRa kit built on the XIAO ESP32S3 with a Wio-SX1262 radio board.
Shop the full range: ESP32 & ESP8266 at Quality RC Parts. See also: Related guide.
Read the companion version of this guide on MTSUAV.
Frequently asked questions
What is the difference between the standard board and the Sense?
The Sense adds a detachable OV2640 camera, a digital microphone, a microSD slot, and a U.FL antenna. The chip, memory, wireless, and size match the standard board.
What resolution is the Sense camera?
The detachable OV2640 camera is rated at 1600 by 1200, and the listing states it is OV3660 compatible.
How large a microSD card does the Sense take?
Cards up to 32GB FAT, per the listing.
Which frameworks work with these boards?
Arduino, MicroPython, and CircuitPython all work with both boards, per the listings.
Sources
Last updated: November 12, 2026.