Arduino Pro Micro ATmega32U4-MU 5V/16MHz Module with Micro USB

Powerful Arduino Pro Micro ATmega32U4 for Compact Projects

The Arduino Pro Micro ATmega32U4 functions as a high-performance, breadboard-friendly development board designed for advanced DIY electronics. It features the powerful ATmega32U4 microcontroller, which includes built-in USB communication. Consequently, this board eliminates the need for a secondary USB-to-Serial interface chip. Furthermore, the 5V/16MHz configuration provides the necessary speed and logic levels for seamless integration with standard digital sensors and modules.

Native USB Support and HID Capabilities

Specifically, the ATmega32U4 allows the Pro Micro to appear to a connected computer as a keyboard, mouse, or MIDI device. This Human Interface Device (HID) capability makes it the premier choice for custom mechanical keyboard builds and specialized gaming controllers. Moreover, the integrated Micro USB port offers a reliable connection for both programming and power. Because the USB stack is handled natively by the MCU, the board resets and enters bootloader mode more efficiently than boards using external bridge chips.

Compact Design for Wearables and Robotics

Additionally, the Pro Micro features a remarkably small footprint, making it ideal for space-constrained applications. Specifically, the board offers 12 digital I/O pins and 4 channels of 10-bit ADC. Consequently, it supports complex tasks such as multi-sensor data logging and motor control in small robotics. Furthermore, the onboard voltage regulator accepts a wide range of input voltages via the ‘RAW’ pin. This flexibility allows the board to run on various battery types, including Li-Po cells. Transitioning to the Pro Micro is seamless for Arduino Uno users, as it remains fully compatible with the Arduino IDE and existing libraries.

Verified Data Sheet (Technical Specifications)