Adafruit GEMMA v2

Dev Board
Adafruit GEMMA v2

Tiny 27mm round sewable wearable microcontroller with ATtiny85 at 8 MHz, 3 GPIO, Micro USB programming, 3.3V power, and reverse-polarity protection — ideal for small LED and NeoPixel wearable projects

ATtiny85 @ 8 MHz512 bytes8 KB
~$10View

Adafruit Trinket 3.3V

Dev Board
Adafruit Trinket 3.3V

Tiny 27×15mm Arduino-compatible microcontroller board with ATtiny85 at 8 MHz, 3.3V logic, 8KB flash, 3 GPIO pins, and Micro USB programming for minimal space-constrained projects.

ATtiny85 @ 8 MHz512 bytes8 KB

Adafruit Trinket 5V

Dev Board
Adafruit Trinket 5V

Tiny 31×15mm Arduino-compatible microcontroller with ATtiny85 at 8–16 MHz, 5V logic, 8KB flash, 3 GPIO pins, and Micro USB — the 5V variant for interfacing with 5V sensors and NeoPixel LEDs.

ATtiny85 @ 8-16 MHz512 bytes8 KB

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