Adafruit ItsyBitsy 5V/16MHz


Platform Atmel AVR: Atmel AVR 8- and 32-bit MCUs deliver a unique combination of performance, power efficiency and design flexibility. Optimized to speed time to market-and easily adapt to new ones-they are based on the industrys most code-efficient architecture for C and assembly programming.

Microcontroller ATMEGA32U4
Frequency 16MHz
Flash 28KB
RAM 2.50KB
Vendor Adafruit


Please use itsybitsy32u4_5V ID for board option in “platformio.ini” (Project Configuration File):

platform = atmelavr
board = itsybitsy32u4_5V

You can override default Adafruit ItsyBitsy 5V/16MHz settings per build environment using board_*** option, where *** is a JSON object path from board manifest itsybitsy32u4_5V.json. For example, board_build.mcu, board_build.f_cpu, etc.

platform = atmelavr
board = itsybitsy32u4_5V

; change microcontroller
board_build.mcu = atmega32u4

; change MCU frequency
board_build.f_cpu = 16000000L


PIO Unified Debugger currently does not support Adafruit ItsyBitsy 5V/16MHz board.


Name Description
Arduino Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences.