The Arduino Uno R3 is the most popular board to start learning electronics, coding and physical computing. Built around the ATmega328P microcontroller, it is beginner-friendly yet powerful enough for real projects — from blinking an LED to robotics, IoT and home automation.
Key features
- Microcontroller: ATmega328P (8-bit AVR)
- 14 digital I/O pins (6 with PWM output)
- 6 analog input pins
- Clock speed: 16 MHz
- Operating voltage: 5V · Recommended input: 7–12V
- 32 KB flash memory, 2 KB SRAM, 1 KB EEPROM
- USB-B port for programming & power · DC power jack · ICSP header · reset button
Great for
Students, beginners and makers — final-year projects, sensors, motors, displays and thousands of compatible shields. Programmable with the free Arduino IDE and a huge open-source library ecosystem.
Package includes the Arduino Uno R3 board. USB cable sold separately.