--- product_id: 203224713 title: "Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs" brand: "seeed studio" price: "NZ$79" currency: NZD in_stock: true category: "Seeed Studio" url: https://www.desertcart.nz/products/203224713-seeed-studio-xiao-samd21-smallest-arduino-microcontroller-with-rich-interfaces store_origin: NZ region: New Zealand --- # 48MHz ARM Cortex-M0+ CPU Tiny 20x17.5mm footprint 14 GPIO pins with I2C, SPI, UART Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs **Brand:** seeed studio **Price:** NZ$79 **Availability:** ✅ In Stock ## Summary > 🚀 Tiny Tech, Massive Impact: The Microcontroller That Fits Your Boldest Ideas ## Quick Answers - **What is this?** Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs by seeed studio - **How much does it cost?** NZ$79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/203224713-seeed-studio-xiao-samd21-smallest-arduino-microcontroller-with-rich-interfaces) ## 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 - • **Blazing Fast Processing:** Experience 3x the speed of classic Arduino with a 48MHz 32-bit ARM Cortex-M0+ core. - • **Compact Powerhouse for Wearables:** Designed for low power consumption and tiny spaces, ideal for next-gen wearable devices and discreet IoT projects. - • **Interface-Rich in Thumb-Sized Form:** 14 versatile GPIO pins supporting analog, digital, I2C, SPI, and UART—all packed into a micro footprint. - • **Seamless Arduino IDE Compatibility:** Plug-and-play with the full Arduino ecosystem for rapid prototyping and effortless coding. - • **USB-C HID Support for Modern Projects:** Built-in USB Type-C port enables HID device creation—perfect for custom keyboards and wearable tech. ## Overview The Seeed Studio XIAO SAMD21 is the smallest Arduino-compatible microcontroller board featuring a powerful 48MHz ARM Cortex-M0+ CPU, 256KB flash memory, and 32KB SRAM. Despite its thumb-sized 20x17.5mm form factor, it offers 14 GPIO pins with analog and digital capabilities, plus I2C, SPI, UART, and USB-C interfaces. Perfectly compatible with the Arduino IDE, it empowers rapid prototyping and wearable device innovation with efficient power use and versatile connectivity. ## Description desertcart.com: Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs : Electronics ## 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 | #130 in Single Board Computers (Computers & Accessories) | | Brand | seeed studio | | Built-In Media | / | | CPU Model | None | | CPU Speed | 48 MHz | | Compatible Devices | Devices compatible with Arduino IDE | | Connectivity Technology | I2C, SPI, UART, USB | | Customer Reviews | 4.5 out of 5 stars 493 Reviews | | Manufacturer | seeed studio | | Memory Storage Capacity | 256 KB | | Mfr Part Number | 110010004 | | Model Name | Seeeduino XIAO | | Model Number | 110010004 | | Number of Items | 1 | | Operating System | Windows, macOS, Linux | | Processor Brand | ARM | | Processor Count | 1 | | Processor Speed | 48 MHz | | RAM Memory Installed | 32 KB | | RAM Memory Technology | SRAM | | Ram Memory Installed Size | 32 KB | | Total Usb Ports | 1 | | UPC | 886268758132 | | Warranty Description | / | | Wireless Compability | 802.11b | ## Product Details - **Brand:** seeed studio - **CPU Model:** None - **Memory Storage Capacity:** 256 KB - **Model Name:** Seeeduino XIAO - **Ram Memory Installed Size:** 32 KB ## Images ![Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs - Image 1](https://m.media-amazon.com/images/I/41ednqv7gXL.jpg) ![Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs - Image 2](https://m.media-amazon.com/images/I/41uR9RpuN1L.jpg) ![Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs - Image 3](https://m.media-amazon.com/images/I/41BfmdCDLSL.jpg) ![Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs - Image 4](https://m.media-amazon.com/images/I/3104sqK5TPL.jpg) ![Seeed Studio XIAO SAMD21 - Smallest Arduino Microcontroller with Rich Interfaces for Wearable Devices, 100% Arduino IDE Compatible, 3pcs - 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.nz/products/203224713-seeed-studio-xiao-samd21-smallest-arduino-microcontroller-with-rich-interfaces](https://www.desertcart.nz/products/203224713-seeed-studio-xiao-samd21-smallest-arduino-microcontroller-with-rich-interfaces) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-10-06*