The Arduino® Uno R3 is based on the ATmega328, which contains everything necessary to support the microcontroller. Arduino can sense the environment by receiving input from a variety of sensors and can affect its surroundings via outputs, controlling lights, motors, and other actuators. The microcontroller on the board is programmed using the Arduino programming language (based on Wiring) and the Arduino® development environment (based on Processing). Arduino® projects can function independently or interact with computer software.

Simply connect the Arduino® to a computer with a USB cable or power it with a AC-to-DC adapter or battery to begin programming.

• Arduino® Uno R3 model
• 14 digital input/output (I/O) pins (6 provide PWM output)
• 6 analog input pins
• 40 mA DC current per I/O pin
• 50 mA DC current for 3.3V pin
• 32 KB (ATmega328) flash memory (0.5 KB used by bootloader)
• 2 KB (ATmega328) SRAM
• 1 KB (ATmega328) EEPROM
• 16 MHz clock speed