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Description
ADF GEMMA M0 MINI MICROGEMMA M0 ATSAMD21E18 32 bit Cortex M0+, used with Arduino IDE or CircuitPython Overview The Adafruit Gemma M0 is a super small microcontroller board, with just enough built in to create many simple projects. It may look small and cute: round, about the size of a quarter, with friendly alligator clip sew pads. But do not be fooled! The Gemma M0 is incredibly powerful! We've taken the same form factor we used for the original ATtiny85 based Gemma and
GEMMA M0 ATSAMD21E18 32-bit Cortex M0+, used with Arduino IDE or CircuitPython
Overview
The Adafruit Gemma M0 is a super small microcontroller board, with just enough built-in to create many simple projects. It may look small and cute: round, about the size of a quarter, with friendly alligator-clip sew pads. But do not be fooled! The Gemma M0 is incredibly powerful! We've taken the same form factor we used for the original ATtiny85-based Gemma and gave it an upgrade. The Gemma M0 has swapped out the lightweight ATtiny85 for a ATSAMD21E18 powerhouse.
The Gemma M0 will super-charge your wearables! It's just as small, and it's easier to use, so you can do more.
The most exciting part of the Gemma M0 is that while you can use it with the Arduino IDE, we are shipping it with CircuitPython on board. When you plug it in, it will show up as a very small disk drive with main.py on it. Edit main.py with your favorite text editor to build your project using Python, the most popular programming language. No installs, IDE or compiler needed, so you can use it on any computer, even ChromeBooks or computers you can't install software on. When you're done, unplug the Gemma M0 and your code will go with you.
Features
Here are some of the updates you can look forward to when using Gemma M0:
- Same size, form-factor, and pinout as classic Gemma
- Updating ATtiny85 8-bit AVR for ATSAMD21E18 32-bit Cortex M0+
- 256KB Flash - 8x as much as 8 KB on ATtiny85
- 32 KB RAM - 64x as much as 512 bytes on ATtiny85
- 48 MHz 32 bit processor - 6x as fast as ATtiny85 (not even taking into account 32-bit speedups)
- Native USB supported by every OS - can be used in Arduino or CircuitPython as USB serial console, Keyboard/Mouse HID, even a little disk drive for storing Python scripts. (ATtiny85 does not have native USB)
- Can be used with Arduino IDE or CircuitPython
- Built in RGB DotStar LED
- Three big-hole sew-pads can be used for conductive thread or alligator-clips for fast prototyping
- Each I/O pad can be used for 12-bit analog input, or digital input/output with internally connected pullups or pulldowns
- We gave the M0 pads the exact same names as the original Gemma so all your existing Arduino code will work exactly the same as-is without changes
- True analog output on one I/O pad - can be used to play 10-bit quality audio clips
- Two high speed PWM outputs on other two I/O Pads - for servos, LEDs, etc
- All three pads can also be used as hardware capacitive touch sensors with no additional components required
- Can drive NeoPixels or DotStars on any pins, with enough memory to drive 8000+ pixels. DMA-NeoPixel support on one pin so you can drive pixels without having to spend any processor time on it.
- Native hardware I2C or Serial available on two pads so you can connect to any I2C or Serial device with true hardware support (no annoying bit-banging)
- Same Reset switch for starting your project code over
- On/Off switch built in
- JST battery connector for plugging in AAA's or LiPoly battery (no built-in LiPoly charging so it is safe to use with NiMH/Alkalines)
- Each order comes with one fully assembled and tested Gemma M0 with CircuitPython & example code programmed in.
Specification
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.1 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Soft, plush, lovely
Color: Blue Moment, Size: King (90 in x 108 in)
We got this blanket in king size to use in lieu of a comforter in the warmer months. It's incredibly soft and luxurious. It's thick enough to feel plush and heavy, but thin enough to be perfect for a cool summer night.
It feels like really excellent quality, too. This is not cheap thin fleece. I've only washed it once so far, but it seems like it'll hold up to many washes. It's big, though, at least in king size. It takes up pretty much our entire washing machine, so it needs to be washed by itself or with little else. To dry, I tossed it in the dryer for 40 minutes or so on medium heat and then hung it over a banister to finish drying, and this seemed to work well.
It's also a very pretty blue, like a dusky light blue, just lovely. Overall, I'm very happy with this blanket.
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Reviewed in the United States on May 18, 2026
★★★★★ 4
A good lightweight blanket
Color: Blue Moment, Size: Twin (60 in x 90 in), Color: Blue Moment, Size: Twin (60 in x 90 in)
With perpetually dry hands I have issues with certain fabric textures. This Velvetloft blanket is on the border of triggering, but nothing like how the Classic Extra-Fluffy Plush throw is. The ribbing is interesting visually, but also made the blanket feel a lot lighter too. Definitely one I'll keep on the couch for a chilly day and not for my bed.
When I washed it I was expecting a lot of shedding like the Classic one, but there wasn't as much. I washed it on cold and dried it on the delicate setting since I don't have a good place to air dry. It doesn't appear any worse off than before I washed it.
Overall I like this one way more than the Classic, but the Primalush wearable blanket is still my favorite.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Wait until you unroll this beautifully soft blanket! It’s the one you want.
Color: Goose Egg, Size: Twin (60 in x 90 in), Color: Goose Egg, Size: Twin (60 in x 90 in)
I can’t pass up a good blanket, and boy is this one impressive! It’s another high-quality product from Berkshire Home Company.
What I love about my goose-egg colored, velvety soft, blanket is the ribbed design. The lines separate the elevated design, and I could literally rub my hand over it throughout an entire movie!
It’s SO plush and soft. It’s made from their signature VelvetLoft fabric. Plus the design makes it look like a planned piece of your decor. I like the color I chose but there are others to choose from as well.
It’s nice and thick but not too warm. I got the 60”x90” twin size which is great for me! Next time I will get a queen size to go over my bed.
The price point is so low for the quality you get! You should stop your search now because this is the best one!
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Luxurious VelvetLoft From Berkshire
Color: Stormy Weather, Size: Full/Queen (90 in x 90 in)
Berkshire hits it out of the park with yet another fabulously lux blanket. Their VelvetLoft is my favorite for warmth and softness all while looking like an offering at a high end hotel or B&B.
The medium weight was the perfect choice to pair with the large ribbing and while this IS the blanket to choose once the leaves start to fall, it's almost sinful to snuggle up with to watch a movie with the AC humming in the warmer months since it washes like a dream and did not shed at all.
I used cold, delicate and my favorite scented delicate wash. Dryer on Medium for 10 minutes and then Low for anther 20 minutes. Perfect!
The Stormy Weather is a silvery gray neutral and will work with multiple coverlets, bedspreads and quilts.
Perfect gift! Definitelythe blanket you want in the guest room!.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Beautiful blanket
Color: Goose Egg, Size: King (90 in x 108 in), Color: Goose Egg, Size: King (90 in x 108 in)
Really loving this blanket. It’s just beautiful - a step above the average chenille seemingly sold at every drug store/grocery store/shop. Has a lovely sectioned pattern and is generously sized for a king blanket. Plenty of room on both sides of our deep king mattress.
Washes up very nicely.. still like new! Note of caution: The label says air or line dry, no heat. Usually I wouldn’t consider any vexing that can’t be regularly washed and dried. But since every chenille shrinks some.. I was careful to machine wash cold abs air dry in drier only and it didn’t shrink at all (go figure). Came out of drier nice and soft still.
Great value for this price. Would also make an excellent gift for housewarming/wedding etc.
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Reviewed in the United States on April 30, 2026