Adafruit METRO M0 Express - ATSAMD21G18 Microcontroller Board

Adafruit METRO M0 Express - ATSAMD21G18 Microcontroller Board

Marsoni

M251S

$57.00

Get it in 3 business days with 1 day shipping. Friday, May 29

Adafruit METRO M0 Express - ATSAMD21G18 Microcontroller BoardThe Adafruit METRO M0 Express is a powerful microcontroller board designed for CircuitPython and Arduino IDE, featuring the ATSAMD21G18 ARM Cortex M0+ running at 48 MHz with 3. 3V logic. This board offers a significant upgrade over the original Metro 328, with 256KB of flash memory, 32KB of RAM, and built in USB support without the need for an external serial converter chip. Power supply via 7 9V DC jack with on off switch or micro USB 5V source;

Easy Shipping

Quick Dispatch:

Your Adafruit METRO M0 Express - ATSAMD21G18 Microcontroller Board orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your Adafruit METRO M0 Express - ATSAMD21G18 Microcontroller Board ships.

Need Help?
Questions about Adafruit METRO M0 Express - ATSAMD21G18 Microcontroller Board, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for Adafruit METRO M0 Express - ATSAMD21G18 Microcontroller Board in your area.

Get Shipping Estimates

Country Zip/Postal Code

Exchange/Return Notes

We offer a 30-day return/exchange service after receiving.
Final sale items are not eligible for returns or exchanges.
To process your return/exchange, please contact us at [email protected]
Please click here for more details>>> Return & Exchange Policy

It arrived on time and as advertised. I actually ordered 2 of the Playology toys and my boy did not like either. Total waste of $40 for the 2 toys. The toys are did not smell(to me at least) like the scent they advertised and my boy is sooooo food motivated and such a chewer that I was sure he would love these. Hasn’t touched them since the day I gave them to him. Very disappointed.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on July 1, 2025

Verified Purchase

Teresa Rafeek

San Leandro, US

★★★★★ 2

Not Rottweiler proof

Lasted about an hour.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on November 13, 2025

Verified Purchase

Ksett

Alexandria, US

★★★★★ 5

Excellent dog chew

Size: Small (Pack of 1)

Our dog loves this and uses it everyday. Still going strong 3 months later.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 11, 2026

Verified Purchase

Mike c

Los Angeles, US

★★★★★ 5

My 2 German shepherds love these good quality last a good bit

Size: Large (Pack of 1)

I buy these for my 2 German shepherds. My male is a heavy chewer and he will spend time with this everyday until he starts to wear it down or makes it into a makeshift shank and I replace it Last about 3-4 months for aggressive chewers. Highly recommend (keeps them from chewing my stuff)

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on May 1, 2026