--- product_id: 253983900 title: "Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+" brand: "seeed studio" price: "294.97 DT" currency: TND in_stock: true reviews_count: 5 category: "Seeed Studio" url: https://www.desertcart.tn/products/253983900-seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0 store_origin: TN region: Tunisia --- # 48MHz ARM Cortex-M0+ CPU - 3x faster Tiny 20x17.5mm footprint - fits anywhere USB Type-C interface for power & code Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ **Brand:** seeed studio **Price:** 294.97 DT **Availability:** ✅ In Stock ## Summary > 🚀 Tiny powerhouse, endless possibilities — code your future now! ## Quick Answers - **What is this?** Seeeduino XIAO - Arduino Microcontroller - SAMD21 Cortex M0+ by seeed studio - **How much does it cost?** 294.97 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/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 Yet Versatile:** Smallest Seeeduino board with 14 GPIO pins supporting analog, digital, PWM, DAC, I2C, UART, and SPI interfaces. - • **Blazing Fast Processing:** ARM Cortex-M0+ 32-bit CPU running at 48MHz delivers triple the speed of classic Arduino boards. - • **Wearable & Low-Power Ready:** Ultra-compact design with power pads for battery integration, perfect for sleek wearable tech and tiny projects. - • **Future-Proof USB-C Connectivity:** Modern USB Type-C port for reliable power delivery and fast code uploads, keeping your projects cutting-edge. - • **Seamless Arduino IDE Compatibility:** Plug-and-play with Arduino IDE and extensive libraries for rapid prototyping and effortless coding. ## Overview The Seeeduino XIAO is a palm-sized Arduino-compatible microcontroller featuring a 48MHz ARM Cortex-M0+ CPU, 256KB flash memory, and 32KB SRAM. Despite its ultra-compact 20x17.5mm size, it offers 14 multifunctional GPIO pins with analog, digital, PWM, DAC, I2C, UART, and SPI support. Equipped with a USB Type-C interface and designed for low power consumption, it’s ideal for wearable devices, rapid prototyping, and compact DIY electronics projects—all fully compatible with the Arduino IDE for seamless development. ## 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! Review: All 3 tested and working good - Very satisfied with the purchase, all 3 SAMD21 board tested and confirmed working. I will be able to prototype easily with these spare boards Review: My go to for sooo many reasons - I bought 3 of these a couple years ago to play around with. At the time, it was just because they were cheap and quick to get on desertcart. I quickly fell in love. Though they aren't perfect. Pros: Size. They're tiny. Even 2 years on, most microcontrollers are *at least* 2 to 4 times the size. The small size makes them easy to fit into almost any project. They're literally the size of a postage stamp. I can cover one with my finger. Which brings me to the next pro: I/O. Even at this tiny size, you still have tons of I/O, with support for hardware interrupts, UART, I2C, SPI, and true analog pins with DAC. The big one for me, though, is HID support through the USB type C port. That's a much less common feature than you'd think. If you want to make devices that can talk to other devices as an input device, you need this. Speed. You don't really think that a simple Arduino device needs to be fast, but having a 48mhz processor and 32mb of SRAM to work with open up a LOT of possibilities. Take, for example, my most recent project. I wanted to make a vintage laptop keyboard work with a modern laptop motherboard. But I wanted to do so without damaging the original keyboard. So to interface the two, I needed the Xiao to be able to read the PS/2 protocol that the keyboard was talking in, and give USB HID protocol commands to the computer. Reading the PS/2 protocol takes very precise timing. Your code has to execute within a certain number of microseconds, otherwise the command will fail. Because of the speed of the processor, I could have more code executing in the interrupts while still staying under the threshold. Cons: Storage. While I've never run up against the limit, the Xiao has 256 kB of flash memory. That's not the smallest, but it's certainly not the biggest I've seen on a microcontroller. So I do get a little nervous when I start importing a bunch of libraries. So far, my most involved project, the keyboard that I talked about earlier, only uses about 25% of that storage. And that's importing two different libraries plus my custom code. But if you have a large project that takes many libraries or a whole lot of code, you might run into problems with storage. Bootloader Corruption. I've only had it happen once and it was after hundreds upon hundreds of code uploads. These guys saying they're bricking after 50 uploads have to be doing something wrong. Or maybe it's because they're on Mac hardware, I don't know. But I've had to upload 50 times pretty much everyday I've worked on this project and so far it's not been a problem. But like I said, I did have one of my original three stop responding to USB. So the problem does exist. The device itself still does what the last upload of code told it to do, but I can no longer get it to talk with the Arduino software. And resetting the unit didn't resolve it. So you're mileage may vary. ## 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 | #64,375 in Computers ( See Top 100 in Computers ) #944 in Single-Board Computers | | Brand | Seeed Studio | | Built-In Media | / | | CPU Model | core_m | | CPU model | core_m | | CPU speed | 0.05 GHz | | Compatible Devices | Devices compatible with Arduino IDE | | Connectivity Technology | I2C, UART, SPI, USB | | Customer Reviews | 4.6 out of 5 stars 458 Reviews | | Installed RAM memory size | 32 KB | | Manufacturer | seeed studio | | Memory Storage Capacity | 256 KB | | Memory storage capacity | 256 KB | | Mfr Part Number | 110010004 | | Model Name | Seeeduino XIAO | | Model Number | 110010004 | | Model name | Seeeduino XIAO | | 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) ## Customer Reviews ### ⭐⭐⭐⭐⭐ All 3 tested and working good *by N***N on 11 May 2024* Very satisfied with the purchase, all 3 SAMD21 board tested and confirmed working. I will be able to prototype easily with these spare boards ### ⭐⭐⭐⭐⭐ My go to for sooo many reasons *by R***S on 10 May 2021* I bought 3 of these a couple years ago to play around with. At the time, it was just because they were cheap and quick to get on Amazon. I quickly fell in love. Though they aren't perfect. Pros: Size. They're tiny. Even 2 years on, most microcontrollers are *at least* 2 to 4 times the size. The small size makes them easy to fit into almost any project. They're literally the size of a postage stamp. I can cover one with my finger. Which brings me to the next pro: I/O. Even at this tiny size, you still have tons of I/O, with support for hardware interrupts, UART, I2C, SPI, and true analog pins with DAC. The big one for me, though, is HID support through the USB type C port. That's a much less common feature than you'd think. If you want to make devices that can talk to other devices as an input device, you need this. Speed. You don't really think that a simple Arduino device needs to be fast, but having a 48mhz processor and 32mb of SRAM to work with open up a LOT of possibilities. Take, for example, my most recent project. I wanted to make a vintage laptop keyboard work with a modern laptop motherboard. But I wanted to do so without damaging the original keyboard. So to interface the two, I needed the Xiao to be able to read the PS/2 protocol that the keyboard was talking in, and give USB HID protocol commands to the computer. Reading the PS/2 protocol takes very precise timing. Your code has to execute within a certain number of microseconds, otherwise the command will fail. Because of the speed of the processor, I could have more code executing in the interrupts while still staying under the threshold. Cons: Storage. While I've never run up against the limit, the Xiao has 256 kB of flash memory. That's not the smallest, but it's certainly not the biggest I've seen on a microcontroller. So I do get a little nervous when I start importing a bunch of libraries. So far, my most involved project, the keyboard that I talked about earlier, only uses about 25% of that storage. And that's importing two different libraries plus my custom code. But if you have a large project that takes many libraries or a whole lot of code, you might run into problems with storage. Bootloader Corruption. I've only had it happen once and it was after hundreds upon hundreds of code uploads. These guys saying they're bricking after 50 uploads have to be doing something wrong. Or maybe it's because they're on Mac hardware, I don't know. But I've had to upload 50 times pretty much everyday I've worked on this project and so far it's not been a problem. But like I said, I did have one of my original three stop responding to USB. So the problem does exist. The device itself still does what the last upload of code told it to do, but I can no longer get it to talk with the Arduino software. And resetting the unit didn't resolve it. So you're mileage may vary. ### ⭐⭐⭐⭐⭐ Mostly good, but some quirks. *by A***E on 13 March 2025* Very good Stamp sized controller. Best in the series, the ESP32S3 chip is one of the best performers. My application involved an I2S interface to a microphone and four RMT interface outputs to SM2812B leds. Issue #1: The 3.3v regulator on this board has fluctuating output and I need to run my microphone on a separate regulator or I can 'hear' the CPU processing as noise in the microphone. Other arduino boards do not have this issue. The oscilloscope revealed that this chip makes it's power rails rather noisy! Issue #2: Pin 7 (GPIO43) has a part on it that makes the bandwidth poor. This pin isn't usable for high bandwidth control. It's a design choice on their part. Darn good board. Five stars. ## 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.tn/products/253983900-seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0](https://www.desertcart.tn/products/253983900-seeeduino-xiao-arduino-microcontroller-samd21-cortex-m0) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-07-04*