Arduino Nano V3.0 ATmega328P 5V 16MHz CH340

 is a small and versatile microcontroller development board based on the ATmega328P, designed for projects where space efficiency and reliable performance are essential. Its compact size makes it ideal for embedded systems, wearable electronics, and portable applications while still offering the full functionality of a standard Arduino board. The unsoldered version means the pin headers are not pre-attached, giving users the flexibility to solder headers as needed or mount the board directly onto a custom PCB for a clean and permanent installation.

Arduino Nano V3.0 operates at 5V with a 16 MHz clock speed, providing stable and responsive performance for a wide range of applications. It includes 32 KB of flash memory for program storage, 2 KB of SRAM for runtime operations, and 1 KB of EEPROM for saving data even when power is removed. These memory resources are sufficient for most hobbyist, educational, and prototyping needs.

Arduino Nano V3.0 features 14 digital input and output pins, including 6 pins capable of PWM output, along with 8 analog input pins that allow accurate sensor data reading. Each I/O pin can safely handle up to 20 mA, making it suitable for driving LEDs, sensors, and small modules. The board supports essential communication protocols such as UART for serial communication, SPI for high-speed data transfer, and I2C for connecting multiple devices using only two wires.

Arduino Nano V3.0 can be powered in multiple ways, including through a mini-USB connection, the VIN pin, or the 5V pin, and it includes an on-board voltage regulator to ensure stable operation. Its flexibility, small footprint, and wide community support make it a popular choice for IoT projects, robotics, compact embedded systems, and general DIY electronics development.