The Arduino UNO SMD R3 is one of the most widely used development boards in the world, designed for learning, prototyping, and deploying embedded systems. Built around the ATmega328P microcontroller in SMD form, it offers the same functionality as the DIP version with improved durability and a slimmer profile. It is fully compatible with the Arduino IDE and supports a massive ecosystem of shields, libraries, and tutorials from Arduino. If you’re doing hobby projects, academic work, or early-stage product prototyping, this board is best. Key Features ATmega328P microcontroller (SMD package) Operating Voltage: 5V Input Voltage (recommended): 7–12V 14 Digital I/O Pins (6 PWM) 6 Analog Input Pins Clock Speed: 16 MHz USB Interface for programming & power ICSP header and reset button Compatible with Arduino shields & IDE Technical Specifications Parameter Value Microcontroller ATmega328P Architecture AVR Flash Memory 32 KB (0.5 KB used by bootloader) SRAM 2 KB EEPROM 1 KB Digital I/O Pins 14 PWM Pins 6 Analog Inputs 6 Clock Speed 16 MHz USB Controller ATmega16U2 Board Type SMD R3
