The AVR Butterfly is a self-contained, battery-powered demonstration board running the ATMEL AVR ATmega169PV Microcontroller. The board includes a liquid crystal display (LCD), joystick, speaker, serial port, real-time clock (RTC), internal flash memory, and sensors for temperature and voltage. The board is the size of a name tag and with the pin on back it can be worn as such after the user enters their name onto the LCD.
The AVR Butterfly comes preloaded with software that demonstrates many of the capabilities of the AVR microcontrollers. Factory firmware can scroll your name, display the sensor readings, and show the time. The AVR Butterfly also has a piezo speaker that can reproduce sounds and music.
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