Arduino® UNO R3

ATmega328P + ATmega16U2 Microcontroller Board

A powerful yet easy-to-use microcontroller board designed for hobbyists, students, and professionals. Built around the ATmega328P processor with USB connectivity handled by the ATmega16U2, this board is perfect for DIY electronics, robotics, IoT, and embedded projects.

Key Features

• Processor: ATmega328P, running up to 16 MHz
• Memory: 32 KB Flash, 2 KB SRAM, 1 KB EEPROM
• Connectivity:
• UART (serial communication)
• SPI & I²C (for sensors, displays, and modules)
• USB support via ATmega16U2
• Timers & PWM:
• 2 × 8-bit timers, 1 × 16-bit timer
• 6 PWM channels for motor or LED control
• Analog & Digital:
• 1 × Analog Comparator
• Multiple digital I/O pins with interrupt support
• Security & Reliability:
• Power-on Reset (POR)
• Brown-out Detection (BOD)
• Watchdog Timer
• Power Supply: Works with 2.7V – 5.5V, making it versatile for battery and USB-powered projects

Ideal For

• Electronics learning & prototyping
• Robotics & automation projects
• IoT devices and smart gadgets
• DIY hobby electronics