Adafruit Metro M4
Best high-performance controller for advanced hobbyist electronics projects.
This board is a powerhouse for those who need serious processing speed without abandoning the familiar Arduino ecosystem. You sacrifice the compact footprint of smaller microcontrollers for a massive array of hardware interfaces and the raw muscle required to handle complex, high-performance projects with ease.
$27.20
at
Electromaker
Who it's for
- Developers building complex, high-speed computational projects
- Python enthusiasts seeking rapid prototyping and easy coding
- Makers leveraging existing Arduino shield ecosystems
Who should skip it
- Budget-conscious hobbyists working on simple, low-cost builds
- Engineers designing long-term, battery-powered remote devices
- Beginners needing only basic I/O for simple tasks
Performance breakdown
Processing Speed
The 120MHz clock handles complex calculations with impressive, snappy efficiency.
Connectivity Versatility
Six hardware SERCOMs provide exceptional flexibility for diverse peripheral communication.
Programming Accessibility
The UF2 bootloader makes code deployment seamless for developers of all levels.
Expansion Compatibility
Arduino shield compatibility opens the door to a massive ecosystem of add-ons.
Storage Capacity
Integrated 2MB QSPI flash offers plenty of room for data-heavy projects.
Analog Precision
Dual 1 MSPS DACs and ADCs deliver high-fidelity signal processing capabilities.
Key Specs
Dimensions
72.0mm x 54.0mm x 15.0mm
Weight
20.6g
Processor
Microchip ATSAMD51J19, Cortex M4 @ 120 MHz
Memory
512 KB Flash, 192 KB RAM
Power Input
7-9V DC or 5V USB
Logic Level
3.3V
Onboard Storage
2MB QSPI Flash
GPIO Pins
25 total pins
Analog Inputs
8
Analog Outputs
2
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