Best Arduino Uno R3

Microcontroller ATmega328
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

Arduino Uno R3

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Arduino Uno R3 Features :

• Arduino UNO R3 board
• Announced December 2nd, 2011
• Includes new pin configuration (SCL, SDA, IOREF)
• ATmega328P
• Original board made in Italy (NKC Electronics)

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Arduino Uno R3 Reviews, 9 out of 10. based on 46 ratings