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Item #:
8199281
Adafruit (PID 3505) Metro M0 Express - Designed for CircuitPython - ATSAMD21G18
88% of respondents would recommend this to a friend
Item #:
8199281
GMD 3204
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Order now and get it around Saturday, September 26
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Metro M0 Express is our first Metro designed for use with CircuitPython, a small but full-featured version of Python for use with electronics. It also features a ATSAMD21G18 chip and built-in USB support.
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Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
CircuitPython Ready
The Metro M0 Express is fully compatible with CircuitPython, enabling beginners and educators to rapidly develop projects without extensive programming knowledge, making hardware more accessible.
Powerful Microcontroller
Featuring the ATSAMD21G18 microcontroller, this board provides robust performance with faster processing speeds, making it suitable for complex applications in wearables, robotics, and IoT.
Versatile Connectivity
With multiple inputs and outputs, the Metro M0 Express supports a wide range of sensors and displays, offering flexibility in design and allowing users to create diverse electronic projects.
Product Details
| RAM Memory Installed | 2 MB |
| Memory Storage Capacity | 2 MB |
| Connectivity Technology | USB |
| Operating System | CircuitPython |
| Processor Brand | Adafruit |
| Wireless Compability | 802.11b |
| Compatible Devices | Mouse, Personal Computer |
| RAM Memory Technology | SRAM |
| Processor Count | 1 |
| Total Usb Ports | 1 |
| Brand | Adafruit |
| Model Name | FBA_3505 |
| Built-In Media | 4 rubber bumpers, 2 MB SPI Flash storage chip, ATSAMD21G18 ARM Cortex M0+ processor, 25 GPIO pins |
| UPC | 717520031437 |
| Manufacturer | Adafruit |
| Model Number | FBA_3505 |
| Mfr Part Number | FBA_3505 |
| Ram Memory Installed Size | 2 MB |
| Item Weight | 0.1 lbs (50 grams) |
What's in the box
4 rubber bumpers, 2 MB SPI Flash storage chip, ATSAMD21G18 ARM Cortex M0+ processor, 25 GPIO pins
Who Should Buy?
-
Beginner Programmers
Ideal for newcomers to coding, it supports CircuitPython, making programming accessible and engaging with easy examples.
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Education Use
Perfect for educational settings, the Metro M0 Express allows students to explore electronics and programming fundamentals interactively.
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IoT Projects
Great for IoT enthusiasts, it has built-in Wi-Fi compatibility making it suitable for developing connected applications and prototypes.
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Advanced Developers
Experienced programmers seeking robust, complex microcontroller features may find it limited compared to more powerful alternatives.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is CircuitPython?
Answer: CircuitPython is a beginners-oriented version of MicroPython, a version of the Python programming language specifically designed for use with electronics. -
Question:
Can the Metro M0 be used with the Arduino IDE?
Answer: Yes, the Metro M0 is also usable in the Arduino IDE. -
Question:
What type of storage does the Metro M0 have?
Answer: The Metro M0 features a 2 MB SPI Flash storage chip that can be used for storage, like a tiny hard drive.
Adafruit Single Board Computers FBA_3505 Editorial Review
The Adafruit Metro M0 Express is a micro-controller board designed for use with CircuitPython programming. Customers have reported varying experiences with this product, with some stating that it worked well initially but failed later on, while others found it to be effective for basic testing and programming projects. One common issue is a decrease in performance speed when using CircuitPython. Nevertheless, the board has been praised for its ease of use, with customers appreciating the ability to drag and drop Python scripts onto the board. While the product is still developing its resources and knowledge base for Python programming, it appears to be a reliable option when it is not faulty.
Customer Reviews & Ratings
20 customers ratings
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5 Star
77%
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4 Star
7%
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3 Star
0%
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2 Star
7%
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1 Star
9%
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Pros
- Easy to use for basic programming projects
- Ability to drag and drop Python scripts
- No need for a compile cycle
- Greater number of test cycles compared to Arduino due to CircuitPython
Cons
- May decrease performance speed when using CircuitPython
Platform Trust & Buyer Confidence
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Jasmin
Verified buyer
“Great products and very good service: very easy and very fast international delivery.”
9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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Verified buyer
“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”
11 September 2026 · via Trustpilot
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Adele
Verified buyer
“Easy to find and order what you want on the website. Delivery is quick to the UK”
8 September 2026 · via Trustpilot
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GMD 3204
Order now and get it around Saturday, September 26
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Features & Benefits
- Designed for use with CircuitPython
- Features an ATSAMD21G18 chip
- Built-in USB support for program & debug capability
- 256K of FLASH storage and 32K of RAM
- No soldering required, plug and play
- Includes rubber bumpers to prevent slipping
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