Arduino Nano R3 CH340 Soldered

The Arduino Nano R3 CH340 Soldered is a compact, breadboard-friendly microcontroller board based on the ATmega328P. Its small form factor makes it ideal for projects where space is limited while maintaining full Arduino Uno functionality.

Key Features

• Compact size (45mm x 18mm) fits standard breadboards
• ATmega328P microcontroller with full Arduino compatibility
• CH340 USB chip for programming and serial communication
• 22 digital I/O pins including PWM and SPI
• 8 analog inputs (2 more than Arduino Uno)
• USB Mini-B connector for power and data
• Low power consumption suitable for battery projects

Technical Specifications

Applications

• Compact projects with space constraints
• Wearable electronics and portable devices
• Breadboard prototyping without shield stacking
• Drone and robot controllers where size matters
• Wireless sensor nodes and IoT endpoints
• Embedded systems requiring USB communication

Important Notes

• Install CH340 driver before first use on Windows/Mac
• Select ‘Arduino Nano’ and ‘ATmega328P’ in Arduino IDE
• Same pin capabilities as Arduino Uno in smaller size
• Some shields may not fit; use breadboard wiring instead
• Soldered version comes with headers pre-installed