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Overclocking an Arduino Zero (or any ATSAMD21 board)

Introduction The Arduino Zero made quite popular the ATSAMD21 microcontroller, which was later adopter by a number of other compatible boards like Adafruit’s Feather M0 or Itaca-Innovation’s uChip. The SAMD21 is a 48-MHz Cortex M0+, with hardware multiplier, a nice… (READ MORE)