Arduino GEMMA - Miniature Wearable Electronic Platform

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Product Code: 91586
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Product Description
  • ATtiny85 on-board, 8K of flash, 512 byte of SRAM, 512 bytes of EEPROM
  • Easy-to-sew or solder pads for embedding in your wearable project
  • Low cost
  • Internal oscillator runs at 8MHz
  • Low power consumption, draws only 9 mA while running
  • USB bootloader programmable with the Arduino IDE with a few simple config modifications
  • Mini-USB jack for power and/or USB uploading
  • ~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
  • 3 GPIO - The 3 independent IO pins have 1 analog input and 2 PWM output as well.
  • Hardware I2C capability for breakout & sensor interfacing.
$14.00
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Arduino GEMMA - Miniature Wearable Electronic Platform info

Arduino GEMMA - Miniature Wearable Electronic Platform is a tiny wearable platform with a lot of might which is a combination of work from both Adafruit and Arduino. The board is based on Attiny85 and it can be programmed by Arduino IDE over USB. The purpose of Adafruit and Arduino while creating Arduino GEMMA is to design a microcontroller board that was small enough to fit into any project and low cost enough to use without hesitation.

The Attiny85 is a great processor because despite being so small, it has 8K of flash, and 5 I/O pins, including analog inputs and PWM “analog” outputs. The board has 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). Adafruit even made some simple modifications to the Arduino IDE so that it works like a mini-Flora. Arduino GEMMA - Miniature Wearable Electronic Platform is perfect for small and simple projects and very useful in wearable electronics projects.

Even though you can program Arduino GEMMA using the Arduino IDE, it's not a fully 100% Arduino UNO-compatible. There are some things you trade off for such a small and low cost microcontroller. Arduino GEMMA does not have a Serial port connection for debugging so the serial port monitor will not be able to send/receive data and USB v3 ports of some computers' don't recognize Arduino GEMMA ‘s bootloader. Simply use a USB v2 port or a USB hub in between

 

Arduino GEMMA - Miniature Wearable Electronic Platform - General Specifications

  • ATtiny85 on-board, 8K of flash, 512 byte of SRAM, 512 bytes of EEPROM
  • Easy-to-sew or solder pads for embedding in your wearable project
  • Low cost
  • Internal oscillator runs at 8MHz
  • Low power consumption, draws only 9 mA while running
  • USB bootloader programmable with the Arduino IDE with a few simple config modifications
  • Mini-USB jack for power and/or USB uploading
  • ~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
  • 3 GPIO - The 3 independent IO pins have 1 analog input and 2 PWM output as well.
  • Hardware I2C capability for breakout & sensor interfacing.

 

Arduino GEMMA - Miniature Wearable Electronic Platform - Technical Specifications

  • Diameter: 28mm / 1.1"
  • Height: 6mm / 0.24"
  • Weight: 2g

 

Documents

Adafruit Learn link for more information

 

References

Arduino Web Site: https://www.arduino.cc/en/Main/ArduinoGemma

Adafruit Web Site: https://www.adafruit.com/products/2470

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