Seeed Studio XIAO ESP32-S3 WiFi Bluetooth Development Board

The Seeed Studio XIAO ESP32-S3 is a compact WiFi and Bluetooth development board powered by the ESP32-S3R8 dual-core processor running at up to 240MHz. It features 8MB PSRAM, 8MB Flash, USB Type-C, 11 GPIO/PWM, 9 ADC channels, UART, I²C, SPI, lithium battery charging, low-power modes, and a U.FL external antenna connection. 

Description

The Seeed Studio XIAO ESP32-S3 WiFi Bluetooth Development Board combines ESP32-S3 processing power, wireless connectivity, low-power operation, and a very compact footprint for embedded and IoT development.

The board uses the ESP32-S3R8 SoC, featuring a 32-bit dual-core Xtensa LX7 processor operating at up to 240MHz. It includes 8MB PSRAM and 8MB Flash, giving developers useful memory capacity for wireless applications, sensor processing, data handling, graphical projects, and compact embedded systems.

Wireless connectivity includes 2.4GHz WiFi and Bluetooth 5 Low Energy, with Bluetooth Mesh support documented by Seeed. The board uses a U.FL antenna connector, and the confirmed Chip.pk package includes an external 2.4GHz antenna. Seeed recommends connecting the supplied antenna for improved WiFi and Bluetooth performance.

Despite its small 21 × 17.8mm footprint, the XIAO ESP32-S3 provides UART, I²C, SPI, PWM-capable GPIO, ADC inputs, USB Type-C, RESET and BOOT buttons, plus user and charge LEDs. It also supports a 3.7V lithium battery with onboard charging management, making it suitable for compact portable and battery-powered projects.

This is the standard XIAO ESP32-S3 version, not the XIAO ESP32-S3 Sense or Plus. The standard board does not include the Sense camera, digital microphone, microSD expansion board, or the Plus-version B2B connector.

Key Features

• Seeed Studio XIAO ESP32-S3

• ESP32-S3R8 SoC

• 32-bit Xtensa LX7 dual-core processor

• Up to 240MHz CPU frequency

• 8MB PSRAM

• 8MB Flash

• 2.4GHz WiFi

• Bluetooth 5 Low Energy

• Bluetooth Mesh support

• U.FL external antenna connector

• External 2.4GHz antenna included with Chip.pk stock

• USB Type-C interface

• 11 GPIO / PWM

• 9 ADC-capable inputs

• 1 × UART

• 1 × I²C

• 1 × SPI

• User LED

• Charge LED

• RESET button

• BOOT button

• 3.7V lithium battery support

• Battery charging management

• Deep sleep current as low as 14µA typical

• Compact 21 × 17.8mm form factor

• Arduino and MicroPython development support

• Suitable for IoT, wearables, robotics, smart-home and low-power projects

Technical Specifications

Pin / Interface Overview

Seeed also exposes rear-side test and system pads including USB D+/D−, EN, JTAG-related signals, BAT+ and BAT−.

Power & Low-Power Operation

The XIAO ESP32-S3 supports both USB and battery-powered operation.

• USB Type-C input: 5V

• Battery input: 3.7V lithium battery

• Typical USB operating current: 19mA

• Typical battery operating current: 22mA at 3.8V

• Fast charging current: 50mA

• Trickle charging current: 3.8mA

• Modem sleep: 27mA typical

• Light sleep: 2mA typical

• Deep sleep: 14µA typical

• WiFi active: 100mA typical

• BLE active: 85mA typical

Applications / Use Cases

• IoT devices

• Smart-home automation

• Wireless sensor nodes

• Battery-powered projects

• Wearable electronics

• Robotics

• Compact embedded systems

• WiFi-connected controllers

• Bluetooth LE devices

• Environmental monitoring

• Remote sensor systems

• Data logging

• Home automation

• Educational electronics

• Rapid prototyping

• Low-power networking

• TinyML and embedded experimentation

Compatibility

The XIAO ESP32-S3 is supported by common ESP32-S3 development environments, including Arduino IDE and MicroPython workflows documented by Seeed Studio.

Its I²C, SPI, UART, ADC, PWM and GPIO interfaces allow it to connect with compatible sensors, displays, communication modules and other embedded peripherals.

The board uses 3.3V logic, so external peripherals should be electrically compatible with the ESP32-S3 GPIO levels.

The external antenna should be connected to the onboard U.FL connector for normal wireless use and improved RF performance.

Package Contents

• 1 × Seeed Studio XIAO ESP32-S3 Development Board

• 1 × External 2.4GHz Antenna

• 2 x  7 Pin Header

Buy in Pakistan

Buy the Seeed Studio XIAO ESP32-S3 in Pakistan from Chip.pk for IoT, wireless sensing, robotics, smart-home, wearable and low-power embedded projects.

With an ESP32-S3 dual-core processor, 8MB PSRAM, 8MB Flash, WiFi, Bluetooth 5 LE, USB-C, battery charging, compact dimensions and external antenna support, the XIAO ESP32-S3 provides a powerful development platform in a very small form factor.

FAQs

1. What is the Seeed Studio XIAO ESP32-S3?
The Seeed Studio XIAO ESP32-S3 is a compact ESP32-S3 development board with a dual-core processor, 8MB PSRAM, 8MB Flash, WiFi, Bluetooth 5 LE, USB-C, battery charging, and multiple GPIO interfaces.

2. Which processor is used on the XIAO ESP32-S3?
It uses the ESP32-S3R8 SoC with a dual-core Xtensa LX7 processor running at up to 240MHz.

3. How much memory does the XIAO ESP32-S3 have?
The standard board provides 8MB PSRAM and 8MB Flash.

4. Does the XIAO ESP32-S3 support WiFi and Bluetooth?
Yes. It supports 2.4GHz WiFi and Bluetooth 5 Low Energy, including Bluetooth Mesh support documented by Seeed Studio.

5. Is an external antenna included?
Yes. The confirmed Chip.pk package includes 1 × external 2.4GHz antenna for the board’s U.FL antenna connector.

6. Does this board support a lithium battery?
Yes. It supports a 3.7V lithium battery and includes onboard charging functionality.

7. What interfaces are available on the board?
The XIAO ESP32-S3 provides 11 GPIO/PWM, 9 ADC-capable pins, UART, I²C, SPI, USB Type-C, touch-capable GPIOs, RESET and BOOT controls.

8. Can I use the XIAO ESP32-S3 with Arduino IDE?
Yes. Seeed Studio documents Arduino IDE support for this board.

9. Does the XIAO ESP32-S3 support MicroPython?
Yes. It can be used with MicroPython workflows supported for the ESP32-S3 platform.

10. Is this the XIAO ESP32-S3 Sense version?
No. This listing is for the standard XIAO ESP32-S3. It does not include the Sense camera, microphone, or microSD expansion board.

11. Is this the XIAO ESP32-S3 Plus version?
No. This is the standard version and should not be confused with the Plus variant.

12. What is the size of the XIAO ESP32-S3?
The board measures approximately 21 × 17.8mm, making it suitable for compact and space-constrained embedded projects.