Mini Pro Microcontroller Circuit Board with Atmega328P-AU, 14 Digital I/O Pins, 8 Analog Inputs, 16MHz Clock for Electronic Building and Prototyping Projects, Professional Version Template
Mini Pro Professional Microcontroller Board with Atmega328P-AU for Electronic Building Projects

The Mini Pro professional version represents a compact, fully-featured microcontroller circuit board designed as a template for electronic building blocks and prototyping work. Measuring just 33.3mm by 18.0mm, this board packs essential microcontroller functionality into a small footprint suitable for embedded projects, educational electronics, or custom device development. At its core is the Atmel Atmega328P-AU microcontroller, a capable chip that manages the board's 14 digital input/output pins, 8 analog inputs, and communication interfaces. With support for serial programming downloads and flexible power options from 3.3V to 12V DC or a 9V battery, this board provides a practical foundation for experimenting with electronics without requiring extensive custom circuit design.
Features and Construction

This microcontroller board includes specific hardware features that make it suitable for various electronic applications, from simple input/output projects to more complex sensor-based systems.
Material and Build
The board is constructed as a printed circuit board with surface-mounted components including the Atmega328P-AU microcontroller, a 16MHz resonator for clock timing, and pin headers for connections. It features a reset button for restarting the microcontroller and mounting holes that allow secure attachment to project enclosures or platforms. The TTL level serial port transceiver (RX/TX) facilitates communication with computers or other serial devices.
Size and Practical Fit
With dimensions of 33.3mm in length and 18.0mm in width, this microcontroller board fits into compact electronic projects where space is limited. The small size makes it suitable for wearable electronics, miniature robots, or embedded systems where larger development boards would be impractical. Despite its compact dimensions, the board provides comprehensive connectivity through its pin layout.
Uses and Placement

The board's combination of digital and analog interfaces, along with flexible power options, supports both educational and practical applications in electronics.
Event or Professional Use
For workshops, educational settings, or professional prototyping, this board serves as a ready-to-use platform for demonstrating electronic principles or testing sensor configurations. The 8 analog inputs (A0-A7) allow connection to various analog sensors measuring light, temperature, pressure, or potentiometer positions, while the 14 digital I/O pins handle switches, LEDs, relays, and digital communication. The 6 PWM-capable pins (D3, D5, D6, D9, D10, D11) enable precise control of motor speeds, LED brightness, or servo positions.
Everyday Home Use
For hobbyists building home automation projects, custom controllers, or interactive displays, this board provides the computational core in a compact format. The support for external power from 3.3V to 12V DC means it can be powered by common wall adapters or battery packs, while the 9V battery option offers portable operation. The serial download capability allows programming updates without specialized hardware beyond a basic USB-to-serial adapter.
Benefits and Buying Value

Choosing this specific microcontroller board provides particular advantages for electronic projects where size, connectivity, and ease of use are important considerations.
Reuse and Low Maintenance
The board's design as a complete circuit with mounting holes and pin headers supports reuse across multiple projects without requiring soldering of basic components. Once programmed for one application, the board can be reprogrammed via serial download for different purposes, extending its useful life. The standard pin layout follows common microcontroller conventions, making it compatible with many existing code libraries and project examples.
Why Choose This Product
This Mini Pro board offers a specific combination of the Atmega328P-AU microcontroller, 14 digital I/O pins with 6 PWM outputs, 8 analog inputs, and compact 33.3mm x 18.0mm size that may suit projects requiring these exact specifications. Compared to building a custom circuit with equivalent capabilities, this pre-assembled board saves construction time while providing tested functionality. The inclusion of both digital and analog interfaces in this small form factor addresses needs where space constraints exist alongside requirement for multiple sensor connections.
