---
product_id: 203224713
title: "XIAO RP2040"
brand: "seeed studio"
price: "C$2989"
currency: NIO
in_stock: true
reviews_count: 11
category: "Seeed Studio"
url: https://www.desertcart.ni/products/203224713-xiao-rp2040
store_origin: NI
region: Nicaragua
---

# 48MHz ARM Cortex-M0+ CPU Tiny 20x17.5mm footprint 14 GPIO pins with I2C, SPI, UART XIAO RP2040

**Brand:** seeed studio
**Price:** C$2989
**Availability:** ✅ In Stock

## Summary

> 🚀 Tiny Tech, Massive Impact: The Microcontroller That Fits Your Boldest Ideas

## Quick Answers

- **What is this?** XIAO RP2040 by seeed studio
- **How much does it cost?** C$2989 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/203224713-xiao-rp2040)

## 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

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.
Review: An excellent buy! SAMD21 @ 48MHz + USB-C + Arduino IDE Support + Thumbnail size = AWESOME! - I can't comment on alot of the specific ins and outs of the product because I've yet to run anything other than a blink test sketch to confirm that they work with Arduino and are functional, all 3 were! Like I mentioned in the title, this product has alot going for it: Price: $21.99 for 3 of them so..roughly(rounded up from $7.3) $8 per controller! That's $1-$2 less than Adafruit's Trinket M0 which features the same hardware but does include an RGB LED. I'll take price-to-performance value over a stupid RGB light any day! Size: They are tiny! Perfect for permanent installation onto a breadboard/protoboard or even a PCB(They have castellated edges so you could indeed SMT solder these with the proper technique and good paste/equipment) Specifications: Very good for something so small. SAMD21(Cortex M0) @ 48MHz w/ 256K of Flash! ** I will say that I would've liked to see(and would've paid an extra dollar or two) an external Flash chip, maybe a 1MB or 2MB size? Adafruit does this in their larger boards and premium products in order to accomodate CircuitPython, they don't have external/extra flash on the Trinket M0(Which this is comparable too), so maybe its simply a size thing. ALTHOUGH, I think they could've easily fit a 1-2MB SOIC Type flash chip on the bottom of the pcb. Overall, a great buy for anyone on a budget or with limited funds thats looking for some bang out of their buck!

## 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 | #140 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

![XIAO RP2040 - Image 1](https://m.media-amazon.com/images/I/41ednqv7gXL.jpg)
![XIAO RP2040 - Image 2](https://m.media-amazon.com/images/I/41uR9RpuN1L.jpg)
![XIAO RP2040 - Image 3](https://m.media-amazon.com/images/I/41BfmdCDLSL.jpg)
![XIAO RP2040 - Image 4](https://m.media-amazon.com/images/I/3104sqK5TPL.jpg)
![XIAO RP2040 - Image 5](https://m.media-amazon.com/images/I/41YwHwJsKmL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ My go to for sooo many reasons
*by R***S on May 10, 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.

### ⭐⭐⭐⭐⭐ An excellent buy! SAMD21 @ 48MHz + USB-C + Arduino IDE Support + Thumbnail size = AWESOME!
*by G***Y on July 8, 2020*

I can't comment on alot of the specific ins and outs of the product because I've yet to run anything other than a blink test sketch to confirm that they work with Arduino and are functional, all 3 were! Like I mentioned in the title, this product has alot going for it: Price: $21.99 for 3 of them so..roughly(rounded up from $7.3) $8 per controller! That's $1-$2 less than Adafruit's Trinket M0 which features the same hardware but does include an RGB LED. I'll take price-to-performance value over a stupid RGB light any day! Size: They are tiny! Perfect for permanent installation onto a breadboard/protoboard or even a PCB(They have castellated edges so you could indeed SMT solder these with the proper technique and good paste/equipment) Specifications: Very good for something so small. SAMD21(Cortex M0) @ 48MHz w/ 256K of Flash! ** I will say that I would've liked to see(and would've paid an extra dollar or two) an external Flash chip, maybe a 1MB or 2MB size? Adafruit does this in their larger boards and premium products in order to accomodate CircuitPython, they don't have external/extra flash on the Trinket M0(Which this is comparable too), so maybe its simply a size thing. ALTHOUGH, I think they could've easily fit a 1-2MB SOIC Type flash chip on the bottom of the pcb. Overall, a great buy for anyone on a budget or with limited funds thats looking for some bang out of their buck!

### ⭐⭐⭐⭐⭐ Great value! If you're thinking of getting one, GET THEM. You won't be disappointed.
*by A***O on January 24, 2021*

Absolutely a great value. Not a shill here, but I'm happy to say these are by far some of the best value micro controllers you can be get. I mean, 32 bit and you get 3 for $20 (I'm a prime member and you get them for $19.79 for the 3 pack), what a deal. Now, granted you don't get as many I/O pins, but if you're interested in a controller that truly is tiny and reliable, this is your board. They're also Arduino compatible. You will have to download a new library, but it's not that hard. Go to the Seeeduino website and scroll down really far and it'll show exactly what you need to do to get them working with the Arduino IDE. Some of the instructions may be a little out of date, but they're still useful. In Arduino go to preferences and then boards. You'll need to paste a.link to have the boards added to the IDE. Then search for the "Seeeduino" library. It should say something like Seeeduino boards or something like that. They recently consolidated the library into one. If it's taking long to download, that's the one, you're not doing anything wrong. Then, just plug it in (did I mention it's USB C! yay! Buy a cable or 3 if you don't have one, they're cheap), click verify and upload, it should pop up like a USB stick, do some stuff and then it'll disappear. It'll seem like something went wrong, but it should work. If not, try loading a different example sketch or change a value like making the led flash faster. The default/preloaded code is the blink sketch so change the 1000 to say 100 so you'll be able to tell if it worked. Happy coding!

## Frequently Bought Together

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*Product available on Desertcart Nicaragua*
*Store origin: NI*
*Last updated: 2026-09-28*