The Crowduino Nano V3.1 is a compact, breadboard-friendly development board based on the ATmega328, fully compatible with the Arduino Nano 3.0 and its shields. It features a Mini-B USB port for programming and serial communication, 14 digital I/O pins (6 with PWM), and 8 analogue inputs.

Power is automatically selected from the highest available source: USB, unregulated external supply (6–20 V on pin 30), or regulated 5 V (pin 27). The on-board FT232RL USB-to-serial converter also enables use as a standalone USB-UART adapter via the TX/RX breakout pins.

Key Features

• ATmega328 Microcontroller – 32 KB flash (2 KB bootloader), 2 KB SRAM, 1 KB EEPROM
• Arduino Nano Compatible – Works with Arduino IDE and Nano shields
• Mini-B USB – Programming, serial monitor, and USB-UART converter
• Breadboard Friendly – Standard 2.54 mm DIP spacing
• Status LEDs – Power (red), TX (green), RX (green), and L (green)
• Auto Power Selection – Automatically uses the highest voltage source

Specifications

• Microcontroller – ATmega328
• Operating Voltage – 5 V
• Input Voltage – 7–12 V recommended (6–20 V limit)
• Digital I/O Pins – 14 (6 with PWM output)
• Analogue Input Pins – 8
• DC Current per I/O Pin – 40 mA
• Flash Memory – 32 KB (2 KB used by bootloader)
• SRAM – 2 KB
• EEPROM – 1 KB
• Clock Speed – 16 MHz
• Dimensions – 18.5 × 43.2 mm

Package Contents

• 1× Crowduino Nano V3.1

Resources

• Product Wiki
• Schematic (PDF)