GEMMA - miniature platform with a microcontroller Attiny85 3,3 V - Adafruit 1222

Index: ADA-03017 EAN: 5904422331405

Miniature, round module with AVR Attiny85 microcontroller has an 8 KB Flash memory, 3 digital pins, analog input and 2 channels of PWM. On board is miniUSB connector, through which the system can be programmed via the Arduino IDE.

GEMMA - miniature platform with a microcontroller Attiny85 3,3 V - Adafruit 1222
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Manufacturer: Adafruit

Description

Miniature, round module with AVR Attiny85 microcontroller has an 8 KB Flash memory, 2 digital pins, analog input and 2 channels of PWM. On board is miniUSB connector, through which the system can be programmed via the Arduino IDE using thecable. After onlya few minor changes, the plate behaves like a standardArduino.

 

The presentation of AdafruitGemma board.

 

Check how to program the Adafruit Gemma using the Arduino IDE or AVRdude!

 

The collaboration with Arduino

The device can be programmed via the Arduino environment, however, due to the small size of the board, there are some differences:

  • Board does not have a serial port so the serial monitor embedded in environment Arduino, will not work.
  • Computers are equipped with USB 3.0 ports can have a problem with the recognition of the bootloader, the solution to this situation is to use an external USB 2.0 hub.

 Adafruit GEMMA

 

Specification

  • The AVR Attiny85 microcontroller:
    • Flash memory: 8 KB (2.75 KB of which is occupied by the bootloader)
    • SRAM: 512 b
    • EEPROM: 512 b
    • Clock frequency: internal oscillator of 8 MHz
  • USB bootloader with the possibility of programming via AVRdude or via Arduino IDE
  • Current consumption is 9 mA
  • Mini-usb connector for programming, in our offer, you will find the necessary wire
  • Installed voltage regulators of 5.0 V and 3.3 V with current delivery up to 150 mA, provide supply voltage up to 16 V.
  • Power supply from USB port or external power source with automatic switching system
  • On the board are located two LEDs: green - for powering, and red for the use,r connected to pin 1.
  • Displayed RESET button
  • The power displayed on the JST connector
  • 3 digital pins of I/o, including:
    • 1 analog input
    • 2 PWM channels
    • I2C and SPI interface
  • Works with most basic libraries of Arduino, including Adafruit Neopixel.
  • Diameter of board: 28mm
  • Weight: 1.85 g

 

Examples of projects

 

Voltage to 3.3 V
Voltage from 5.0 V
Voltage output from 3.3 V
Output voltage to 3.3 V
Nominal output voltage 3.3 V
UC - core 1. Single Core
UC - USB microUSB
UC - I2C yes
UC - UART yes
UC - SPI interface yes
Package width 8 cm
Package height 1 cm
Package depth 11 cm
Package weight 0.004 kg

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