The Seeed Studio XIAO ESP32S3 Sense is a compact, high-performance development board designed for embedded AI, IoT, and smart device applications. Measuring just 21 x 17.5mm, this thumb-sized board integrates a dual-core ESP32-S3 processor, detachable OV2640 camera sensor, digital microphone, and SD card support, offering developers powerful processing, image capture, and audio capabilities in a tiny form factor.

Ideal for wearable devices, smart homes, robotics, education, and low-power networking, the XIAO ESP32S3 Sense supports 2.4GHz Wi-Fi, BLE 5.0, and optional U.FL antenna for reliable long-range communication. BDTronics supplies this board in Bangladesh for electronics enthusiasts, developers, and hobbyists seeking a versatile AI development platform.

Features:

• High-performance MCU: Dual-core ESP32-S3R8 processor, 32-bit, 240 MHz, supporting Arduino and MicroPython development

• Integrated camera sensor: Detachable OV2640 for 1600×1200 resolution, compatible with OV5640 for higher resolutions (2592×1944)

• Digital microphone: Voice sensing and audio recognition support for AI and IoT projects

• Memory: 8MB PSRAM + 8MB Flash, plus SD card slot for up to 32GB FAT memory

• Wireless connectivity: 2.4GHz Wi-Fi and BLE 5.0, supports 100m+ remote communication with optional U.FL antenna

• Compact design: Thumb-sized 21 x 17.5mm, ideal for space-constrained projects and wearables

• Low power operation: Multiple sleep modes (modem-sleep, light-sleep, deep sleep) for energy-efficient applications

• Multiple interfaces: UART, I2C, I2S, SPI, 11×GPIOs (PWM), 9×ADC, user LED, charge LED, reset and boot buttons

• Battery support: Li-ion battery charging capability via Type-C or BAT input

Specifications:

• Processor: ESP32-S3R8, dual-core Xtensa LX7, 32-bit, up to 240 MHz

• Wireless: 2.4GHz Wi-Fi, BLE 5.0, Bluetooth mesh, optional U.FL antenna

• Camera: Detachable OV2640 sensor (1600×1200), OV5640 compatible

• Audio: Digital microphone for voice/audio recognition

• Memory: 8MB PSRAM + 8MB Flash, SD card slot (32GB FAT support)

• Interfaces: UART ×1, I2C ×1, I2S ×1, SPI ×1, GPIO ×11 (PWM), ADC ×9, user LED ×1, charge LED ×1, reset & boot buttons

• Power Input: Type-C 5V, BAT 4.2V

• Current Consumption:

  • Low-power sleep: 2–25 mA

  • Active Wi-Fi: ~100–110 mA

  • BLE active: ~85–102 mA

• Operating Temperature: -40°C to 65°C

• Dimensions: 21 x 17.5mm (21 x 17.5 x 15mm with expansion board)

Applications:

• Image processing and computer vision

• Speech recognition and voice AI

• Video monitoring and surveillance

• Wearable devices and smart gadgets

• Home automation and smart home projects

• Health monitoring systems

• Low-power networking applications

• Rapid prototyping and educational electronics

Package Includes:

• 1 × Seeed Studio XIAO ESP32S3 Sense Board

• 1 × Detachable OV2640 Camera Sensor

• 1 × U.FL Antenna

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