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Adafruit GEMMA v2 - Miniature wearable electronic platform

Adafruit GEMMA v2 - Miniature wearable electronic platform

Regular price $12.99 $20.29 Sale

Key Features:

  • Easy-to-sew or solder pads for embedding in your wearable project
  • Low cost enough, you can use one for every weekend project
  • Ultra low power, draws only 9 mA while running
  • ATtiny85 on-board, 8K of flash, 512 byte of SRAM, 512 bytes of EEPROM

Love FLORA but want a bite-sized version? Look no further, GEMMA is a tiny wearable platform board with a lot of might in a 1" diameter package. Powered by a Attiny85 and programmable with an Arduino IDE over USB, you'll be able to realize any wearable project!

Microcontroller board small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your Flora and you aren't willing to take apart the project you worked so hard to design. It's our lowest-cost sewable controller!
We designed a USB bootloader so you can plug it into any computer and reprogram it over a USB port just like an Arduino (it uses 2 of the 5 I/O pins, leaving you with 3). In fact we even made some simple modifications to the Arduino IDE so that it works like a mini-Flora. Even though you can program GEMMA using the Arduino IDE, it's not a fully 100% Arduino-compatible. There are some things you trade off for such a small and low cost microcontroller!

Item Specifics
3 - GPIO
Internal oscillator runs at 8MHz
USB bootloader with a nice LED indicator programmable with the Arduino IDE
On-board 3.3V power regulator with 150mA output capability and ultra-low dropout
Up to 16V input, reverse-polarity protection, thermal and current-limit protection
Reset button
Micro-USB jack for power and/or USB uploading
Hardware I2C capability for breakout & sensor interfacing
Size: 27.98mm round x 7.14mm high (1.1" x 0.28")
Weight: 3.29g
Recommended for older projects (Prior to 2014)