This Arduino UNO board is Perfect for  Microcontroller board autonomous project - be it Home Automation or IOT system, datalogging sensor feedback to remotely controlling devices, best board for students or real life projects.

It uses an surface mount version of the Atmega328P instead of the through-hole version. It is assembled with the CH340 USB to Serial converter driver chip, instead of using an Atmega16U2 chip.

Microcontroller ATmega328 SMD chip

Operating Voltage 5V

Input Voltage (recommended) 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 (ATmega328) of which 0.5 KB used by bootloader

SRAM 2 KB (ATmega328)

EEPROM 1 KB (ATmega328)

Clock Speed 16 MHz