




Seeed Studio XIAO nRF52840 Sense (XIAO BLE Sense) (EU Version)
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10 in stock
Delivery & Return Rules
Same-Day Delivery for ISB/RWP
Policy: Orders placed before 3:00 PM for delivery within Islamabad/Rawalpindi will be delivered the same day. Orders placed after this time will be delivered the next business day.
Quick Returns
Explanation: We aim for a smooth return experience.
Policy: Returned items will be processed within 3–5 business days of receiving the item, and you will be notified once the return is approved.
Exchange for Misquoted Items
Explanation: We take full responsibility for product listing accuracy.
Policy: If the item you received is significantly different from its description or image, you can request an exchange.
Wrong or Damaged Products
Explanation: We ensure product quality and accurate shipping.
Policy: If you receive an incorrect product or one that is damaged during shipment, you are eligible for a free exchange.
Complete Package Assurance
Explanation: Your order should arrive complete and in perfect form.
Policy: If any accessory, component, or part is missing from the package, we will ship the missing parts after confirmation.
Video Proof of the Items
Explanation: Helps verify the condition of the product upon delivery.
Policy:Â An unboxing video is mandatory at the time of opening the package. The video must clearly show the sealed package being opened, the product, and all included components. This is required for any claims related to:
- Missing items
- Damaged products
- Wrong deliveries
Without this video proof, we will not be able to process returns or exchanges.
No Warranty for Electronic Products
Explanation: Most electronic items are sold as-is and cannot be returned once used.
Policy: Electronic products are not covered under warranty. We recommend testing the item as soon as you receive it. Exchanges are only allowed if the product is damaged on arrival or incorrectly delivered.
Return Request Timing
Explanation: We operate within a strict return window.
Policy: All return/exchange requests must be submitted within 10 days (local orders) and 20 days (bulk orders) from the invoice date.
Online Return Requests Only
Explanation: Streamlined and trackable process.
Policy: All return and exchange requests must be raised through our official website.
Proof of Purchase Required
Explanation: Ensures authenticity of your claim.
Policy: A copy of your invoice or order confirmation is required for any return, exchange, or or claim.
Order Cancellation Policy
Policy: Only those orders that are still in processing or have not yet been shipped are eligible for cancellation.Â
Explanation: Once an order has been shipped, it cannot be canceled under any circumstances. If your order is still in the processing stage or has not yet been dispatched, you may request a cancellation.
TECHNICAL DOCUMENTATION FILES
Description
The Seeed Studio XIAO nRF52840 Sense (XIAO BLE Sense) is a compact and versatile microcontroller board designed for Bluetooth Low Energy (BLE) and IoT applications. Its small size and integrated sensors make it ideal for wearable devices, environmental monitoring, and smart electronics. As a result, it provides a high-performance solution for compact and portable projects.
This board features the nRF52840 microcontroller with BLE support, enabling wireless communication and low-power operation. Consequently, the Seeed Studio XIAO nRF52840 Sense can be used for remote sensing, data logging, and IoT automation. Additionally, it integrates multiple onboard sensors, including temperature, humidity, light, and motion sensors, which simplifies prototyping without external modules.
One of the key advantages of the XIAO BLE Sense is its ease of programming. It is compatible with Arduino IDE, CircuitPython, and PlatformIO, allowing developers to quickly write and upload code. Furthermore, the small form factor makes it perfect for embedded systems and wearable designs where space is limited.
The board is designed for durability and low power consumption. It supports USB programming and can operate on small battery packs, making it ideal for portable IoT devices. The Seeed Studio XIAO nRF52840 Sense also includes GPIO pins for additional expansion and integration with external components, enhancing its versatility.
This microcontroller board is widely used in environmental monitoring, smart home projects, robotics, and health monitoring devices. Moreover, it supports BLE communication, making it compatible with smartphones, tablets, and other wireless devices.
Overall, the Seeed Studio XIAO nRF52840 Sense is a compact, powerful, and flexible solution for developers and hobbyists. Its onboard sensors, BLE capabilities, and ease of programming make it an essential component for IoT, wearable, and smart electronics projects.
Features
- Versatile Microcontroller: Incorporate the Nordic nRF52840 chip with FPU, operating up to 64 MHz, mounted multiple development ports, supported by Arduino / CircuitPython
- Wireless Capabilities:Â Implement Bluetooth 5.0, BLE functions with onboard antenna, also provide NFC connectivity
- Elaborate Power Design: Provide ultra-low power consumption as 5 μA in deep sleep mode while supporting lithium battery charge management
- Advanced onboard Functionality: Assemble additional digital microphone and 6-axis IMU in the tiny board for embedded Machine Learning applications
- Thumb-sized Design:Â 21 x 17.8mm, Seeed Studio XIAO series classic form-factor, suitable for wearable devices
Specification
| Item | Seeed Studio XIAO nRF52840 | Seeed Studio XIAO nRF52840 Sense |
| Processor | Nordic nRF52840 | |
| ARM® Cortex®-M4 with FPU runs up to 64 MHz | ||
| Wireless | Bluetooth 5.0/NFC | |
| On-chip Memory | 1 MB flash and 256 kB RAM | |
| Onboard Memory | 2 MB QSPI flash | |
| Interface | 1xUART, 1xIIC, 1xSPI, 1xNFC, 1xSWD, | |
| 11xGPIO(PWM), 6xADC | ||
| Sensors | Onboard PDM digital microphone | |
| Onboard 6-axis IMU | ||
| Dimensions | 21 x 17.8mm | |
| Power | Circuit operating voltage: 3.3V@200mA | |
| Charging current: 50mA/100mA | ||
| Input voltage (VIN): 5V | ||
| Standby power consumption: <5μA | ||
Hardware Overview
Attention
All the I/O pins are 3.3V, please do not input more than 3.3V, otherwise, the CPU may be damaged.
PinOut

Application
- Small and flexible wearable device
- Wifi/Bluetooth controlled wireless connection project
- Embedded Machine Learning Project
- IoT and TinyML AI applications
- Great for mini Arduino projects
Package Includes
1 x Seeed Studio XIAO nRF52840 Sense
| Weight | 9 g |
|---|---|
| Manufacturer | Seeed Studio |
| Product Number | 102010469 |
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