Description
The Arduino Pro Mini is a small microcontroller board that provides the power of the Arduino platform in a minimal footprint. It features 14 digital I/O pins, 6 PWM outputs, and 8 analog inputs, with a 16 MHz clock speed. Unlike the Nano, it does not include a built-in USB interface; programming is done via an external USB-to-serial adapter. Its small size and low power consumption make it ideal for wearable electronics, sensor projects, IoT devices, and compact robotics.
Key Features
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ATmega328P microcontroller
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14 digital I/O pins (6 PWM outputs)
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8 analog input pins
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Operating voltage: 3.3V or 5V variants
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External USB-to-serial programming required
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Small, lightweight, and breadboard-friendly
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Compatible with Arduino IDE
Variants
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Arduino Pro Mini 3.3V / 8 MHz
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Arduino Pro Mini 5V / 16 MHz
Specifications
| Feature | Details |
|---|---|
| Microcontroller | ATmega328P |
| Operating Voltage | 3.3V or 5V |
| Input Voltage (recommended) | 3.35–12V |
| Digital I/O Pins | 14 (6 PWM outputs) |
| Analog Input Pins | 8 |
| Flash Memory | 32 KB (2 KB used by bootloader) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Clock Speed | 8 MHz (3.3V) / 16 MHz (5V) |
| Dimensions | 33 × 18 × 8 mm |
Applications
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Wearable electronics and compact devices
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IoT and sensor-based projects
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Mini robotics and automation
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Embedded system prototypes
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Space-constrained DIY electronics
Compatible Boards / Circuits
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USB-to-serial adapter for programming
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Arduino shields compatible with Pro Mini
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Breadboard for prototyping
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Compatible with Arduino IDE and libraries
Reviews
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