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// UBDS-FEATHER-M4-EXPRESSMCUbeginnerLast verified 2026-04-07

Adafruit Feather M4 Express

Adafruit Industries

Faster Feather built on the ATSAMD51 Cortex-M4F at 120 MHz, with 192 KB RAM, 512 KB flash, and onboard LiPo charging. Drop-in for any FeatherWing while keeping CircuitPython and the Arduino IDE both in play.

feathercircuitpythonlipo-chargerusb-directbreadboard-friendlyprototypingwearablesaudio
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Adafruit Feather M4 Express
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