ATMEGA328P 5V 16M Mini Pro Microcontroller Board with 14 Digital I/O and 8 Analog Inputs

This compact microcontroller board offers a practical solution for electronics enthusiasts, engineers, and hobbyists who need a small but capable control platform. With 14 digital input/output pins, 8 analog inputs, and a 16MHz clock speed, it can handle a variety of sensing and control tasks. The board's small footprint (33.3 x 18.0 mm) makes it ideal for projects where space is limited, yet it provides enough I/O for many common applications. Built around the reliable Atmel Atmega328P-AU microcontroller, this board supports serial download and can be powered from a range of DC sources, including a 9V battery.

Features and Construction

This board combines a set of standard microcontroller features in a miniaturised package. Its construction includes pin headers for easy breadboarding or soldered connections, plus mounting holes for secure placement in a project box.

Pin Configuration

The board provides 14 digital input/output ports labelled RX, TX, D2 through D13. Among these, six ports (D3, D5, D6, D9, D10, D11) support pulse-width modulation (PWM) for controlling motors, LEDs, or other analogue-style outputs. Additionally, there are 8 analogue input ports from A0 to A7 for reading sensors or variable signals.

Serial Communication

A dedicated TTL level serial port transceiver (RX/TX) allows communication with other serial devices or a computer for programming. The board supports serial download, meaning you can upload code directly via a USB-to-serial adapter without needing a separate programmer.

Power Supply Options

You can power the board with an external DC supply ranging from 3.3V to 12V, or simply connect a 9V battery for portable projects. The onboard voltage regulation handles the input to provide stable power to the microcontroller.

Uses and Placement

Thanks to its small size and standard pin layout, this board fits into many typical electronics project scenarios, from prototyping to permanent installations.

Prototyping and Education

Use this board on a breadboard to quickly test sensor interfaces, LED control, or motor drivers. Its pin spacing matches standard breadboard holes, making it easy to wire up circuits without soldering initially.

Embedded and Portable Projects

The board's compact dimensions (33.3 x 18.0 mm) suit small enclosures or wearable devices. The low power requirement (especially with a 9V battery) allows for battery-operated projects like remote sensor nodes or simple automation.

DIY Home Automation

With 14 digital I/O pins, you can control several relays or switches, and the 8 analogue inputs can read temperature, light, or other analogue sensors. This makes the board a good choice for custom home automation controllers.

Benefits and Buying Value

This board offers a practical balance of features and size for cost-sensitive projects. Its compatibility with the Arduino ecosystem (via the Atmega328P chip) means a vast library of code and examples is available.

Reuse and Low Maintenance

The microcontroller can be reprogrammed many times over, allowing you to reuse the same board for different projects. With no moving parts and simple power requirements, the board requires minimal maintenance beyond keeping connections clean.

Why Choose This Product

If you need a small microcontroller board with a proven chip, generous I/O, and flexible power options, this Mini Pro board delivers. It skips unnecessary extras to keep cost and size down while retaining essential features like PWM and analogue inputs.