Resources:

Seeeduino nano Eagle file
ATmega328-datasheet
Datasheet

Compact USB Powered ATmega328P Development Board For Embedded Prototyping And Arduino Compatible Projects
The Seeeduino Nano 8-Bit Embedded Evaluation Board from Seeedstudio is a compact and Arduino-compatible development board designed for embedded-system prototyping, IoT projects, robotics, sensor interfacing, and educational applications. Built around the ATmega328P microcontroller, this board combines the functionality of the classic Arduino Nano with enhanced design reliability and easy USB connectivity. Its breadboard-friendly form factor makes it well-suited for compact electronic designs and rapid prototyping environments.
This embedded evaluation board supports USB-to-serial communication for direct programming and debugging through the Arduino IDE. It offers multiple digital and analogue I/O pins, PWM outputs, UART, SPI, and I2C communication interfaces, making it suitable for automation systems, wearable electronics, DIY electronics, and low-power embedded applications. The compact size helps reduce overall project footprint while maintaining compatibility with a wide range of Arduino shields, modules, and sensors.
Key Features

ATmega328P Microcontroller: Based on the reliable 8-bit AVR ATmega328P running at 16 MHz for stable embedded control applications.
Arduino Compatible: Fully compatible with Arduino Nano development environment and Arduino IDE programming.
Compact Form Factor: Breadboard-compatible design suitable for space-constrained projects and portable devices.
USB-to-Serial Interface: Integrated USB connectivity for programming, firmware upload, and serial communication.
Multiple GPIO Pins: Supports digital I/O, analogue input, PWM output, UART, SPI, and I2C communication interfaces.
Low Power Operation: Suitable for battery-powered embedded systems and energy-efficient electronics projects.
Easy Prototyping: Well-suited for educational learning, maker projects, robotics, and sensor integration.
Wide Operating Voltage: Supports flexible powering options for various embedded-system requirements.

Applications

Embedded-system development
Arduino-compatible prototyping
Robotics and automation projects
Sensor interfacing applications
IoT device development
Educational electronics learning
Portable electronic devices
DIY electronics projects
Wearable electronics
Industrial monitoring systems.

Hardware Overview