✨ DFRduino Nano USB Microcontroller V3.1 (ATmega328)
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🪙 Compact & breadboard-friendly version of the classic Arduino Nano
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🔌 Integrated USB interface with the same ATmega328 chip
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⚡ Delivers all the functionality of the Arduino Diecimila in a smaller, convenient form
👩💻 Developer-Friendly Features:
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🔄 Automatic switching between USB & external power
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📡 Supports serial communication & programming via mini-B USB
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💡 Status LEDs for TX, RX & Power
🚀 Perfect For:
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Quick prototyping
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Embedding microcontrollers in space-constrained projects
Features
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Auto-reset function for hassle-free program uploading
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Blue LED indicates power status
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TX (green), RX (red), and user (orange) LEDs
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+5V to AREF jumper support
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Automatic switching between USB and external power
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Mini-B USB port for programming and monitoring
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ICSP header for low-level programming
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Compact DIP design – breadboard friendly (0.1” spacing)
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Manual reset button included
Technical Specifications
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Microcontroller: Atmel ATmega328-20AU
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Operating Voltage: 5V (logic level)
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Input Voltage (recommended): 7–12V
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Digital I/O Pins: 14 (of which 6 provide PWM output)
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Analog Input Pins: 8
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DC Current per I/O Pin: 40 mA
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Flash Memory: 32 KB (2 KB used by bootloader)
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SRAM: 2 KB
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EEPROM: 1 KB
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Clock Speed: 16 MHz
Compatibility
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Fully compatible with Arduino IDE and most Arduino Nano shields
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Works with Windows, Mac, and Linux systems
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Ideal for robotics, wearables, and embedded systems