The UNO R3 is an ATmega328P-based microcontroller board with a CH340G USB-to-serial chip, making it a reliable and affordable option for learning electronics and building Arduino projects. Simply connect it to your computer via the included USB cable, upload your sketch, and start creating.

With 14 digital I/O pins, 6 analog inputs, and support for both 3.3V and 5V power, this board is compatible with a wide range of shields, sensors, and modules right out of the box.

Key Features

• ATmega328P Microcontroller – Arduino UNO R3 compatible, runs standard Arduino sketches
• CH340G USB-to-Serial – Reliable USB communication with broad OS support
• 14 Digital I/O Pins – 6 with PWM output capability
• 6 Analog Input Pins – For reading sensors and variable signals
• I²C Support – Dedicated SCL and SDA pins
• 16 MHz Crystal – Standard clock speed for Arduino compatibility
• Dual Voltage Support – 3.3V and 5V outputs for flexible peripheral connections
• Multiple Power Options – USB, DC barrel jack, or battery
• ICSP Header – For direct microcontroller programming

Ideal For

• Learning electronics and Arduino programming
• Prototyping with sensors, LEDs, motors, and displays
• IoT and wireless module projects (Bluetooth, RF, GPS, GPRS)
• STEM education and maker workshops

Package Contents

• 1× UNO R3 ATmega328P CH340 development board
• 1× USB cable