MCM Electronics

Gemma Wearable LED's Starter Pack By Adafruit Industries (1657) MCM Part #28-19895

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MSRP: $29.95
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Get started with Adafruit GEMMA with this lovely starter kit! Included is everything you need to make a basic project. There's a GEMMA board, four sewable bright RGB pixels, a battery holder (batteries not included,) 2-ply conductive thread, alligator clips to help you test out your circuit, and a USB cable for programming GEMMA.

Specifications Top

  • A microcontroller board small enough to fit into any project
  • Low cost enough to use without hesitation
  • It's our lowest-cost sewable controller!
  • 6 Solderable Points
Gemma Specifications
  • Super small, only 1.1" / 28mm diameter and 0.28" / 7mm thick.
  • Easy-to-sew or solder pads for embedding in your wearable project
  • Low cost enough, you can use one for every weekend project
  • ATtiny85 on-board, 8K of flash, 512 byte of SRAM, 512 bytes of EEPROM
  • Internal oscillator runs at 8MHz
  • Ultra low power, draws only 9 mA while running
  • USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with the Arduino IDE (with a few simple config modifications)
  • Mini-USB jack for power and/or USB uploading, you can put it in a box or tape it up and use any USB cable for when you want to reprogram.
  • ~5.25K bytes available for use (2.75K taken for the bootloader)
  • 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.
  • Power with either USB or external output (such as a battery) - it'll automatically switch over
  • On-board green power LED and red pin #1 LED
  • Reset button for entering the bootloader or restarting the program.
  • 3 GPIO - The 3 independent IO pins have 1 analog input and 2 PWM output as well.
  • Hardware I2C capability for breakout & sensor interfacing.
Package Includes
  • GEMMA miniature wearable electronic platform
  • Four Flora RGB NeoPixels V2
  • Coin cell battery holder with JST connector and on/off switch (2 x CR2032 batteries not included but available here)
  • Stainless Thin Conductive Thread - 2 ply - 25 meter/85 ft
  • Needle set with 20 pieces
  • Small Alligator Clip Test Lead (set of 12)
  • USB cable - A/MiniB - 3ft

Part Numbers
MCM Part #:28-19895
Adafruit Industries Part #:1657
Package Specifications & Dimensions
Weight:0.3125 lbs.
RoHS Comp:No
Warranty:90 days
Need to Return?
Length:7 in.
Width:4 in.
Height:1 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

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