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SparkFun SAMD21 Dev Breakout
Item #: 84951264

SparkFun SAMD21 Dev Breakout

Item #: 84951264
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What Stands Out

Compact Design
The SparkFun SAMD21 Dev Breakout features a small form factor, perfect for space-constrained projects, allowing users to integrate powerful microcontroller capabilities without compromising on size.
Versatile Connectivity
Equipped with multiple I/O and communication options, this breakout board supports a wide range of peripherals and makes it easy to connect to other devices and sensors, enhancing project flexibility.
User Friendly
Designed with accessibility in mind, the board provides clear pin labels and easy programming capabilities, making it an ideal choice for both beginners and experienced developers looking to prototype quickly.

Product Details

Shop SparkFun SAMD21 Dev Breakout online at a best price in Bulgaria. 702045448
  • Key Features ATSAMD21G18 32-bit/48MHz ARM Cortex-M0+ 256KB Flash Memory Arduino R3 Layout Integrated USB ControllerThe SparkFun SAMD21 Dev Breakout is an Arduino-sized breakout for the Atmel ATSAMD21G18, a 32-bit ARM Cortex-M0+ processor with 256KB flash, 32KB SRAM, and an operating speed of up to 48MHz. This dev breakout provides you with an Arduino hardware option that solves the problems of low storage limits and dynamic memory stack overflows that have plagued the previous iterations of the Arduino family. Yes, the SparkFun SAMD21 Dev Breakout is even fully supported in the Arduino IDE and libraries for the Arduino Zero!It is equipped with a USB interface for programming and power, surrounded with an RTC crystal, and a 600mA 3.3V regulator. By utilizing the Pro R3’s extra PCB real-estate there's room for a few extra GPIO pins and an integrated LiPo charger. To power the board, just plug it into a USB port on your computer via the micro-B port on the breakout. It's also equipped with a LiPo Battery connector (for a single-cell 3.7-4.2V litium-polymer battery) and unpopluated supply input to solder on your own PTH Barrel Jack. The layout meets the Arduino 1.0 footprint standard, including a separate SPI header and additional I2C header. One of the most unique features – a set of six configurable serial interfaces that can be turned into either a UART, I2C master, I2C slave, SPI master, or SPI slave. Each SERCOM provides for a lot of flexibility: the ports can be multiplexed, giving you a choice of which task each pin is assigned. Item Specific32KB SRAM32KB of EEPROM (emulated in Flash)30 GPIO Count14 ADC Channels at 12-bit ResolutionAnalog-to-Digital and Digital-to-Analog Converters (ADC & DAC)Vin: 4.2V-6.0V for charger - otherwise 3.5V-6.0VVBATT: 3.7V LipoVCC: 600mA @3.3VArduino R3 LayoutIntegrated USB Controller
BrandSparkFun
Has written warrantyNo
Item Weight0.1 lbs (50 grams)

Who Should Buy?

Suitable For
  • Embedded Developers

    Ideal for developers building low-power applications needing easy-to-use hardware integration and programming flexibility.

  • Education Purposes

    Perfect for students learning about microcontrollers and embedded systems, providing hands-on experience with real-world applications.

  • Prototyping Projects

    Useful for hobbyists and engineers creating quick prototypes due to the versatile nature of the SAMD21 chip.

Not Suitable For
  • Beginners Without Guidance

    May present challenges for novices without prior programming knowledge, as advanced functionality can be overwhelming.

Product Description

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Customer Questions & Answers

  • Question: How to Shop SparkFun SAMD21 Dev Breakout Online From Ubuy?

    Answer: It’s easy to shop SparkFun SAMD21 Dev Breakout online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.
  • Question: Is SparkFun SAMD21 Dev Breakout Available to Shop Online in Bulgaria?

    Answer: Yes, at Ubuy Bulgaria this product is available for you to shop at a reasonable price. The SparkFun SAMD21 Dev Breakout is not available locally but you can trust us with our express shipping services.
  • Question: How Long Does It Take to Get Product After Placing the Order?

    Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

SparkFun All Computer Cables & Connectors Editorial Review

SparkFun SAMD21 Dev Breakout is an innovative and compact development board designed for prototyping and experimentation. Weighing only 0.1 lbs (50 grams), its portability makes it ideal for projects on the go. This board eliminates the complexity of standard microcontrollers and offers an accessible platform for both beginners and experienced developers alike. With a user-friendly design, the SAMD21 Dev Breakout facilitates rapid development for a wide range of applications, ensuring a smooth learning curve while providing powerful features for advanced users.

Customer Reviews & Ratings

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Pros

  • Lightweight design for easy project portability
  • User-friendly for beginners and experts
  • Ideal for various prototyping applications
  • Compact size saves valuable workspace
  • Designed for rapid development

Cons

  • Limited warranty information available

Platform Trust & Buyer Confidence

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“Everything was efficient and fast. ”

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05 November 2026 · via Trustpilot
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“I can't fault this purchase. Had a scarce part i needed, cheaper than i could source it in the UK, ordered and was followed up with great communication and speedy delivery of a very well packaged part.”

06 November 2026 · via Trustpilot
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“Fast delivery, good and secure packaging, everything was fine and with no problems.”

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