Arduino is an open-source, flexible microcontroller system created to aid designers, artists, students, and tinkerers in completing electronic projects. Arduino works by receiving information from sensors and interacting with its environment through lights, motors, and other actuators.
The Arduino Uno Rev3 is the latest a USB Arduino microcontroller and the reference model for the entire line. The heart of the board is the ATmega328 chipset, but it is augmented by 14 digital input/output pins, 6 analog inputs, a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button.
Adding functionality to the Uno Rev3 can be as easy as stacking on one of the specialized Arduino Shield boards, but the user is limited only by their imagination and expertise.
Specifications: • Microcontroller: ATmega328 • Operating voltage: 5V • Recommended input voltage: 7-12V • Input voltage (limits): 6-20V • Digital I/O pins:14 (of which 6 provide PWM output) • Analog input pins: 6 • DC current per I/O pin: 40 mA • DC current for 3.3V Pin: 50 mA • Flash memory: 32 KB • SRAM: 2 KB • EEPROM: 1 KB • Clock speed: 16 MHz • Dimensions: 2.1” x 2.7” x 0.4”.