The Arduino Uno R3 is the classic microcontroller board that makes electronics prototyping fast, simple, and fun. Built around the powerful ATmega328P microcontroller, it runs at 16 MHz and offers 32 KB of flash memory (with 0.5 KB used by the bootloader), 2 KB of SRAM, and 1 KB of EEPROM, giving you plenty of room for creative projects.
Designed for beginners and experienced makers alike, the Uno R3 features 14 digital I/O pins (6 of which provide PWM output) and 6 analog input pins with 10‑bit resolution, letting you read sensors, drive LEDs, control motors, and interface with displays and other modules. It connects to your computer via a standard USB Type‑B cable, is powered by USB or an external 7–20 V supply, and includes a reset button and an onboard LED on pin 13 for quick testing and debugging.
Ideal for learning programming, building robots, creating smart home devices, or experimenting with IoT, the Arduino Uno R3 is fully supported by the free Arduino IDE, a vast library ecosystem, and a global community. Whether you’re a student, hobbyist, or educator, the Arduino Uno R3 is the perfect starting point for turning your ideas into working electronic prototypes.
Note:
1. Please allow 5-10mm differences due to manual measurement, thanks.
2. The actual color of the product may be slightly different from the picture, and the website is caused by various factors such as the brightness of the monitor and the brightness of the light.
