Supports Arduino IDE 1.0+ (OSX/Win/Linux)
Power via USB or external source – 5V or 7-35V (auto selection)
500mA 5 V R plate regulator
Built-in USB (and disinfection string)
6 I/O pins (2 for USB is used only if the program is communicated via USB, on the contrary, 6 pins can be used, even if it is used for programming via USB)
8K D-memory flash (6K unos after bootloader)
I2C and SPI (vs. USI)
3-pin PWM (possible with PWM software)
ADC D 4 pins
Power LED and Test/Status LED (on Pin0)