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Arduino UNO Rev3
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Arduino UNO Rev3

The classic ATmega328P-based Arduino board and the most widely used and documented starting point for learning electronics and coding.

Grade levels
Grades 6–8Grades 9–12
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Product overview

The Arduino UNO Rev3 is the entry-level microcontroller board that most people use when they first start with Arduino. It is the most used and best documented board in the Arduino family, which means students can find a very large number of tutorials, example projects and compatible add-on shields.

The board is based on the ATmega328P microcontroller running at 16 MHz with 5V logic. It provides 14 digital input/output pins, six of which support PWM, plus six analog inputs. Memory includes 32 KB of flash, 2 KB of SRAM and 1 KB of EEPROM. It can be powered over USB or from an external supply, with 7-12V recommended.

In the classroom, the UNO is used to read sensors, drive LEDs, motors and displays, and introduce programming concepts through the Arduino IDE. Its standard header layout fits a wide range of shields and breadboard projects, making it a dependable foundation for electronics, physical computing and robotics lessons.

Key features

  • ATmega328P microcontroller at 16 MHz
  • 14 digital I/O pins, 6 with PWM
  • 6 analog input pins
  • 32 KB flash, 2 KB SRAM, 1 KB EEPROM
  • Compatible with a wide range of shields
  • Most documented board in the Arduino family
View on the official website

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