Arduino Pro Mini | ATmega328P | Compact Embedded Development Board

The Arduino Pro Mini is a small, lightweight, and low-power microcontroller board based on the ATmega328P. It is designed for permanent embedded applications where space, power consumption, and cost are critical.

Unlike standard Arduino boards, the Pro Mini does not include a USB interface, allowing a much smaller footprint. Programming is done via an external USB-to-TTL (FTDI) adapter, making it ideal for custom PCB integration, battery-powered projects, robotics, and wearables.

Key Features

• Based on ATmega328P AVR microcontroller

• Ultra-compact and lightweight design

• Available in 5V / 16 MHz and 3.3V / 8 MHz variants

• Low power consumption, ideal for battery operation

• Supports SPI, I²C, and UART

• Breadboard-friendly pin layout

• Fully compatible with Arduino IDE

• Ideal for embedded and permanent installations

Detailed Board Specifications

Core & Performance

• Microcontroller: ATmega328P

• Architecture: 8-bit AVR

• Clock Speed:

  • 16 MHz (5V version)

  • 8 MHz (3.3V version)

Memory

• Flash Memory: 32 KB (2 KB used by bootloader)

• SRAM: 2 KB

• EEPROM: 1 KB

Power

• Operating Voltage:

  • 5 V (5V version)

  • 3.3 V (3.3V version)

• Input Voltage (RAW pin): 7 – 12 V

• Low power sleep modes supported

I/O & Peripherals

• Digital I/O Pins: 14

• PWM Pins: 6

• Analog Input Pins: 8

• UART: 1 (Serial)

• SPI: Yes

• I²C: Yes

Programming & Connectivity

• Programming Interface: FTDI / USB-to-TTL adapter

• Bootloader: Arduino Pro Mini

• Supported IDE: Arduino IDE

Physical

• Board Type: Development / Breakout Board

• Form Factor: Pro Mini

• USB Port: Not included

• Pin Spacing: 2.54 mm

• Breadboard Compatible: Yes

Typical Applications & Uses

• Embedded and permanent installations

• Battery-powered projects

• Wearable electronics

• Custom PCB designs

• Robotics and automation

• Sensor nodes and data logging

• Low-power IoT projects

Why Choose Arduino Pro Mini?

• Extremely compact and lightweight

• Lower power consumption than Arduino Uno/Nano

• Ideal for space-constrained designs

• Perfect for custom enclosures and PCBs

• Full Arduino compatibility without extra hardware

Package Includes

• 1 × Arduino Pro Mini Development Board