Arduino Pro Mini 5V ATmega328P Development Board

The Arduino Pro Mini 5V Development Board is a compact microcontroller board based on the ATmega328P, designed for embedded projects where space is at a premium. Running at 5V and 16MHz, it delivers the same processing power as the Arduino Uno in a much smaller form factor. Without an onboard USB interface, the Pro Mini is ideal for permanent installations, battery-powered projects, robotics, IoT devices, sensor networks, and custom electronics where size and power efficiency are important.

Key Specifications

• Microcontroller: ATmega328P-AU
• Operating Voltage: 5V
• Clock Speed: 16MHz
• Input Voltage: 5V to 12V via RAW pin
• USB Interface: External USB-to-Serial adapter required
• Digital I/O Pins: 14
• PWM Outputs: 6
• Analog Inputs: 8 (A0-A7)
• Flash Memory: 32KB
• SRAM: 2KB
• EEPROM: 1KB
• Maximum Regulated Output: 150mA
• Board Dimensions: 18mm × 33mm
• PCB Thickness: 0.8mm
• Weight: Less than 2g

Features

• Compact design makes it ideal for embedded and permanent installations.
• Fully compatible with the Arduino IDE and existing Arduino libraries.
• ATmega328P running at 16MHz for reliable performance.
• Eight analogue inputs, including ADC6 and ADC7 for additional sensor connectivity.
• Six PWM outputs for LED dimming, motor control, and servo applications.
• Onboard 5V voltage regulator accepts external supplies up to 12V via the RAW pin.
• Supports automatic reset when used with compatible USB-to-Serial programmers.
• Power and status LEDs simplify development and troubleshooting.
• Over-current protected design for improved reliability.

Applications

• Embedded electronics
• Robotics and automation
• IoT and smart home devices
• Wireless sensor networks
• Battery-powered projects
• Environmental monitoring
• STEM education and prototyping

Programming Notes

• The Pro Mini does not include onboard USB and requires an external USB-to-Serial programmer for uploading sketches.
• We recommend pairing it with our FTDI FT232RL USB to TTL Serial Adapter, which supports automatic reset for convenient programming.
• When using an unregulated power source such as a 9V battery, connect power to the RAW pin. For a regulated 5V supply, connect directly to VCC.

Resources

• ATmega328P Datasheet

Looking for a version with built-in USB connectivity? Check out the Arduino Pro Micro 5V Development Board. If you need a lower voltage option for battery-powered applications, see the 3.3V Arduino Pro Mini Development Board. You can also browse our complete Arduino collection to find the right board for your next project.

New to Arduino? Follow our Arduino Getting Started Guide to learn the basics, then build your first project using our LED Blink Tutorial.

This product can be found here:

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