Arduino Gemma
Arduino Gemma is a miniature wearable microcontroller board based on the ATtiny85. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a battery to get started on your wearable projects!
Overview
3.3V
8-bit
8 MHz
AVR
The Arduino Gemma is a microcontroller board made by Adafruit based on the ATtiny85. It has 3 digital input/output pins (of which 2 can be used as PWM outputs and 1 as analog input), an 8 MHz resonator, a micro USB connection, a JST connector for a 3.7V battery, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a battery to get started.
You can find your board warranty information here.
Getting Started
In the Getting Started section, you can find all the information you need to configure your board, use the Arduino Software (IDE), and start to tinker with coding and electronics.
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Technical specs
Microcontroller ATtiny85
Operating Voltage 3.3V
Input Voltage 4V-16V
Digital I/O Pins 3
PWM Channels 2
Analog Input Channels 1
DC Current per I/O Pin 20 mA
Absorption 9 mA while running
Flash Memory 8 kB (ATtiny85) of which 2.75 kB used by bootloader
SRAM 512 Bytes (ATtiny85)
EEPROM 512 Bytes (ATtiny85)
Clock Speed 8 MHz
LED_BUILTIN 1
Diameter 27.94 mm

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