--- product_id: 253983900 title: "Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+" brand: "seeed studio" price: "£43.52" currency: GBP in_stock: true category: "Seeed Studio" url: https://www.desertcart.co.uk/products/253983900-seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0 store_origin: GB region: United Kingdom --- # 48MHz ARM Cortex-M0+ CPU Tiny 20x17.5mm footprint USB Type-C power & programming Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ **Brand:** seeed studio **Price:** £43.52 **Availability:** ✅ In Stock ## Summary > 🚀 Tiny Tech, Massive Impact: Power Your Next Innovation with Seeeduino XIAO! ## Quick Answers - **What is this?** Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ by seeed studio - **How much does it cost?** £43.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/253983900-seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0) ## Best For - seeed studio enthusiasts ## Why This Product - Trusted seeed studio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Powerhouse:** Smallest Seeeduino board at thumb-sized 20x17.5mm for ultra-portable projects - • **Versatile I/O Arsenal:** 14 GPIO pins supporting analog, digital, PWM, DAC, I2C, UART & SPI interfaces - • **Wearable-Ready Design:** Low power consumption with battery support and stable clock for reliable wearable devices - • **Blazing Fast Processing:** 3x speed of Arduino Uno/Nano with 48MHz ARM Cortex-M0+ CPU - • **Seamless Arduino IDE Compatibility:** Plug & play with Arduino IDE and extensive libraries for rapid prototyping ## Overview The Seeeduino XIAO is a compact yet powerful Arduino-compatible microcontroller featuring a 48MHz ARM Cortex-M0+ CPU, 256KB flash memory, and 32KB SRAM. Its ultra-small 20x17.5mm size houses 14 multifunctional GPIO pins including analog, digital, PWM, DAC, I2C, UART, and SPI interfaces. Equipped with USB Type-C for power and programming, plus battery support and a stable 32.768KHz clock, it’s perfect for wearable tech, rapid prototyping, and compact DIY projects—all fully compatible with the Arduino IDE ecosystem. ## Description Take a look at Seeeduino XIAO. What a small size and cute looking! It is the smallest member of the Seeeduino family. Seeeduino XIAO 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 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 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 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. 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 layouts an extra 32.768KHz to make the clock more stable.Seeeduino XIAO 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! ## Features - 🌱【Powerful CPU】 The Seeeduino XIAO is equipped with an ARM Cortex-M0+ 32bit 48MHz microcontroller, which is three times faster than Arduino Uno and Arduino Nano. Furthermore, this Arduino IDE compatible board XIAO has 256KB flash memory and 32KB SRAM. - 🌱【Rich Interfaces in a Tiny Size】 The device has 14 GPIO pins, each of which has 11 analog channels, 11 digital channels, I2C*1, UART*1, and SPI*1, USB Type-C interface*1 in a tiny space, just 20mm*17.5mm (about the size of your thumb). Seeeduino XIAO is the smallest Arduino compatible board in the Seeeduino series. - 🌱【Fully compatible with Arduino IDE】 Seeeduino XIAO development board is perfectly compatible with Arduino IDE and you can easily create small projects using the extensive and comprehensive Arduino library. It has a 2.54mm pin pitch and can be used even when inserted into a breadboard because it is an Arduino microcontroller.It has a 2.54mm pin pitch and can be used even when inserted into a breadboard because it is an Arduino microcontroller. - 🌱【Applications】 Seeeduino XIAO is suitable for Wearable devices, Rapid prototyping, DIY keyboard, USB to multi-channel TTL/USB host mode, etc. - 🌱【Perfect for Wearable and Tiny Arduino Projects】 This microcontroller 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08745JBRP | | Best Sellers Rank | #49,277 in Computers ( See Top 100 in Computers ) #730 in Single-Board Computers | | Brand | Seeed Studio | | Built-In Media | / | | CPU Model | None | | Compatible Devices | Devices compatible with Arduino IDE | | Connectivity Technology | I2C, UART, SPI, USB | | Customer Reviews | 4.5 4.5 out of 5 stars (458) | | Manufacturer | seeed studio | | Memory Storage Capacity | 256 KB | | Mfr Part Number | 110010004 | | Model Name | Seeeduino XIAO | | Model Number | 110010004 | | Operating System | Windows, macOS, Linux | | Processor Brand | ARM | | Processor Count | 1 | | Processor Speed | 0.05 GHz | | RAM Memory Installed | 32 KB | | RAM Memory Technology | SRAM | | Total Usb Ports | 1 | | UPC | 886268758132 | | Wireless Compability | 802.11b | ## Product Details - **Brand:** Seeed Studio - **CPU model:** None - **Installed RAM memory size:** 32 KB - **Memory storage capacity:** 256 KB - **Model name:** Seeeduino XIAO ## Images ![Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ - Image 1](https://m.media-amazon.com/images/I/41ednqv7gXL.jpg) ![Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ - Image 2](https://m.media-amazon.com/images/I/41uR9RpuN1L.jpg) ![Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ - Image 3](https://m.media-amazon.com/images/I/41BfmdCDLSL.jpg) ![Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ - Image 4](https://m.media-amazon.com/images/I/3104sqK5TPL.jpg) ![Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ - Image 5](https://m.media-amazon.com/images/I/41YwHwJsKmL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Seeed Studio XIAO SAMD21 The Smallest Arduino Microcontroller Based on SAMD21nwith Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, Desiged for Projects Need Arduino Micro, 3pcs. - Seeed Studio XIAO ESP32C3 - Tiny MCU Board with Wi-Fi and BLE for IoT Controlling Scenarios. Microcontroller with Battery Charge, Power Efficient, and Rich Interface for Tiny Machine Learning. … - Beetle - The Smallest Microcontroller --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/253983900-seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0](https://www.desertcart.co.uk/products/253983900-seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-05-18*