Arduino Uno R3 CH340

Product Overview

The Arduino Uno R3 CH340 is a microcontroller board based on the ATmega328P but with a CH340 USB-to-serial converter instead of the ATmega16U2 found in the original Arduino Uno. This makes it a cost-effective alternative while maintaining full compatibility with the Arduino IDE and most Arduino shields. It is widely used in DIY electronics, robotics, automation, and IoT applications.

Key Features:

• Microcontroller: ATmega328P
• USB Chip: CH340 (requires driver installation on some systems)
• Operating Voltage: 5V
• Input Voltage (Recommended): 7-12V
• Digital I/O Pins: 14 (including 6 PWM outputs)
• Analog Input Pins: 6
• Clock Speed: 16MHz
• Flash Memory: 32KB (0.5KB used by bootloader)
• RAM: 2KB SRAM
• EEPROM: 1KB
• USB Interface: CH340G USB-to-serial converter
• Compatibility: Fully compatible with Arduino IDE and standard shields
• Additional Features: Reset button, ICSP header, built-in LED on pin 13
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Applications:

• DIY & Electronics Prototyping
• Automation & Robotics
• IoT (Internet of Things) Projects
• Educational Learning & Embedded Systems
• Sensor-based Applications

Why Choose Arduino Uno R3 CH340?

The Arduino Uno R3 CH340 provides an affordable yet fully functional alternative to the original Uno, making it ideal for beginners, students, and hobbyists. Although it requires a CH340 driver installation on some systems, it delivers the same performance and compatibility for various electronics projects.