SeeedStudio Seeeduino Xiao SAMD21 (Pre-Soldered)


In stock

SKU: 857091
  1. Power ARM Cortex CPU
  2. Compatible With Arduino IDE
  3. Breadboard Friendly
  4. Small Size
  5. Multiple Development Interfaces


(inc GST)

₹ 677.12 (+18% GST extra)

In stock

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Category: Development Board/Kit
Tags: SeeedStudio XIAO

Take a look at Seeeduino XIAO(Pre-Soldered). What a small size and cute looking! It is the smallest member of the Seeeduino family. Seeeduino XIAO(Pre-Soldered) still carries the powerful CPU-ARM Cortex-M0+(SAMD21G18) which is a low-power Arduino microcontroller. On the other hand, this little board has good performance in processing but needs less power. As a matter of fact, it is designed in a tiny size and can be used for Arduino wearable devices and small projects.

Apart from the strong CPU, Seeeduino XIAO(Pre-Soldered) is excellent in many other functions. It has 14 GPIO PINs, which can be used for 11 analog PINs, 11 digital PINs, 1 I2C interface, 1 UART interface, and 1 SPI interface. Some PINs have various functions, A1/D1 to A10/D10 Pins have PWM functions and Pin A0/D0 has a function of DAC which means you can get true analog signals not PWM signals when you define it as an analog pin, that’s why 14 GPIO PINs can realize more I/O PINs and interfaces. Moreover, Seeeduino XIAO(Pre-Soldered) supports the USB Type-C interface which can supply power and download code. There are power pads at the back of the XIAO which support the battery and make it designed for wearable devices to become realistic. Except for the power LED, we add a user LED on board for your better coding experience. Usually a Dev. A board as small as this size will use the chip’s inner crystal oscillator for time fixing, in order to make the clock more accurate, Seeeduino XIAO(Pre-Soldered) layouts an extra 32.768KHz to make the clock more stable.

Seeeduino XIAO(Pre-Soldered) is perfectly compatible with Arduino IDE, you can easily develop some small projects with the help of the large and comprehensive Arduino library. So get one and you will soon love it!

  1. Wearable devices
  2. Rapid prototyping (directly attached to the expanded PCB as a minimal system)
  3. Perfect for all the projects need mini Arduino
  4. DIY keyboard
  5. USB development (USB to multi-channel TTL/USB host mode, etc.)
  6. A scenario where you need to read multiple mock values The DAC output


  1. Powerful CPU: ARM Cortex-M0+ 32bit 48MHz microcontroller(SAMD21G18) with 256KB Flash,32KB SRAM
  2. Flexible compatibility: Compatible with Arduino IDE
  3. Easy project operation: Breadboard-friendly
  4. Small size: As small as a thumb(20×17.5mm) for wearable devices and small projects.
  5. Multiple development interfaces: 11 digital/analog pins, 10 PWM Pins, 1 DAC output, 1 SWD Bonding pad interface, 1 I2C interface, 1 UART interface, 1 SPI interface.

Package Includes:

1 x SeeedStudio Seeeduino Xiao SAMD21 (Pre-Soldered)

SKU: 857091 Category: Tag:

ARM Cortex M0 CPU(SAMD21G18)

Clock Speed


Flash Memory

256 KB




14 Pins



USB Connector

Type C

Length (mm)


Width (mm)


Height (mm)


Weight (gm)


Shipment Weight

0.015 kg

Shipment Dimensions

3 × 2 × 1 cm

1 Month Warranty

This item is covered with a standard warranty of 1 month from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.


ATSAMD218A Datasheet

KiCAD Library

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Country Of Origin: China