This Metro M0 Express board looks a whole lot like the original Metro 328, but with a huge upgrade. Instead of the ATmega328, this Metro features a ATSAMD21G18 chip, an ARM Cortex M0+. It’s the first Adafruit Metro that is designed for use with CircuitPython!
At the Metro M0’s heart is an ATSAMD21G18 ARM Cortex M0 processor, clocked at 48 MHz and at 3.3V logic, the same one used in the new Arduino Zero. This chip has a whopping 256K of FLASH (8x more than the Atmega328) and 32K of RAM (16x as much)! This chip comes with built in USB so it has USB-to-Serial program & debug capability built in with no need for an FTDI-like chip.
Comes fully assembled with headers, tested, and with the UF2 bootloader loaded on. Includes 4 rubber bumpers to keep it from slipping off your desk. No soldering required to use, plug and play!
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This is the latest stable release of CircuitPython that will work with the Metro M0 Express.
Start here if you are new to CircuitPython.
This is the latest unstable release of CircuitPython that will work with the Metro M0 Express.
Unstable builds have the latest features but are more likely to have critical bugs.
Every time we commit new code to CircuitPython we automatically build binaries for it. They are stored on Amazon S3 by language (some which may be unreleased.) Try them if you want the absolute latest and are feeling risky.
All previous releases are available on GitHub. They are handy for testing but we recommend the latest stable otherwise.