SKU: 42650442715

SparkFun Qwiic Micro - SAMD21 Development Board

Sale price$18.87 Regular price$20.97
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Description

SparkFun Qwiic Micro - SAMD21 Development BoardLooking for a super small microcontroller to use with the Qwiic eco system? The SparkFun Qwiic Micro is molded to fit our standard 1"x1" Qwiic standard size which makes it one of our smallest micro controller offerings to date. At it's core is the powerful and versatile ATSAMD21E18, which is an ARM Cortex M0+, 32 bit microcontroller, with 256KB of flash memory that can run at up to 48MHz! It has 12 digital pins which include 5 analog pins, SPI, IC,

Looking for a super small microcontroller to use with the Qwiic eco-system? The SparkFun Qwiic Micro is molded to fit our standard 1"x1" Qwiic standard size which makes it one of our smallest micro-controller offerings to date. At it's core is the powerful and versatile ATSAMD21E18, which is an ARM Cortex M0+, 32-bit microcontroller, with 256KB of flash memory that can run at up to 48MHz! It has 12 digital pins which include 5 analog pins, SPI, I²C, and an additional UART data bus as well as a Qwiic connector for easy integration into the Qwiic ecosystem and I²C prototyping.

On the underside of the Qwiic Micro, we've left open pads for a LiPo Battery connector that you can add yourself, if you wish you can make the micro-controller portable. We've also provided pads on the underside for a flash memory chip to maximize the board's memory capacity. The SparkFun Qwiic Micro comes programmed with a UF2 Bootloader making it easy to program with easy driver installation! If you need a tiny but mighty micro-controller for you next project check out the SparkFun Qwiic Micro.

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Features

  • Dimensions: 1in x 1in
  • Optional LiPo Charging Port
  • Expandable Flash Memory
  • Qwiic Connector

ATSAMD21E

  • 48 MHz
  • 256KB
  • 32K SRAM
  • UF2 Bootloader

Documents

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Exchange/Return Notes
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SKU: 42650442715

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phala riffel
New York, US
★★★★★ 5
Comfortable shoes
Size: 10.5, Color: Black
Fit well Look great Get compliments all the time
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Reviewed in the United States on April 3, 2026
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Larry
Grantham, US
★★★★★ 5
Good value for the money.
Size: 9.5 Wide, Color: Beige
Comfortable right out of the box. Great style and well made. The more you wear the softer they get but maintain their overall appearance.
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Reviewed in the United States on May 25, 2026
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Amazon Customer
Port Orchard, US
★★★★★ 5
Very good quality for a reasonable price.
Size: 10, Color: Grey
Very good quality, very soft, very comfortable, look amazing, I’m very happy.
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Reviewed in the United States on May 23, 2026
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Mike L.
Lake Worth, US
★★★★★ 4
Comfortable fit for slip-in fabric shoes
Size: 14, Color: Black/Black
My first experience with Marc Joseph. I typically purchase dress and casual work shoes from Florsheim and occasionally Rockport. I'm giving these four stars because the initial fit and feel appear solid. Depending on the shoe brand I wear a size 14 or 15. My feet are slightly wide but I don't alway need wide fit. These size 14 fit well with wide enough toe box. I've tried slip in shoes before and they just don't feel right. These somehow work and there is no heel slip. My only reservation is the high lip on the heel for slip-in and hope they dont catch pant hems. I gave 4 stars because I'll have to determine durability. Granted they are a light fabric shoe with a soft rubber tread. I'd like them to last for at least 6 months..and use them for business casual work wear during warm weather.
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Reviewed in the United States on May 19, 2026
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Chris
Port Orchard, US
★★★★★ 5
Stylish and comfortable.
Size: 8 Wide, Color: Black/Black
Shoes look great and fits well. Definitely recommend pocking another pair.
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Reviewed in the United States on May 10, 2026

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