Arduino UNO R3 Board

The Arduino UNO R3 is a widely popular and versatile microcontroller development board based on the ATmega328P chip. Known for its reliability, ease of use, and extensive community support, the UNO R3 is perfect for prototyping, robotics, IoT projects, embedded systems, and educational electronics.

Featuring 14 digital I/O pins, 6 PWM outputs, and 6 analog inputs, the UNO R3 can connect to a wide range of sensors, actuators, and modules. It is programmed using the Arduino IDE via USB, allowing beginners and professionals alike to create projects quickly and efficiently.

Key Features

• Microcontroller: ATmega328P

• Operating Voltage: 5V

• Digital I/O Pins: 14 (6 PWM outputs)

• Analog Input Pins: 6

• Flash Memory: 32 KB

• SRAM: 2 KB

• EEPROM: 1 KB

• Clock Speed: 16 MHz

• USB interface for programming and serial communication

• Built-in power regulation for external supply

• Compatible with Arduino shields and accessories

Specifications

• Power Supply: USB (5V) or external 7–12V DC

• Digital I/O Pins: 14 (PWM on D3, D5, D6, D9, D10, D11)

• Analog Inputs: 6 (A0–A5)

• Communication: UART (TX/RX), I²C, SPI

• Reset Button: Built-in for easy program restarting

• Dimensions: Approx. 68.6 mm × 53.4 mm

Pin Description

• VCC / 5V / 3.3V: Power outputs

• GND: Ground

• D0–D13: Digital I/O pins

• A0–A5: Analog input pins

• TX/RX: Serial communication pins

• RST: Reset pin