Leonardo Pro Micro ATmega32U4 16MHz USB-C Microcontroller Module for Arduino

Leonardo Pro Micro ATmega32U4 16MHz USB-C module for Arduino

A versatile module featuring an ATmega32U4 microcontroller running at 16 MHz. The board is fully compatible with Arduino Pro Micro 5V. Thanks to built-in USB communication support, the module does not require an additional serial converter. This makes the board significantly smaller and more compact than the popular Arduino Nano.

The device has a modern USB-C port, additionally protected by a PTC fuse. The module is natively compatible with the Arduino IDE development environment.

Programming tip

To get started with the module, simply connect it to your computer using a USB-C cable. In Arduino IDE settings, select the Arduino Leonardo board.

Key technical specifications

• Microcontroller: ATmega32U4
• Maximum clock frequency: 16 MHz
• Connector: USB-C protected by PTC fuse
• Flash memory: 32 kB (including 4 kB reserved for bootloader)
• SRAM: 2.5 kB
• EEPROM: 1 kB
• Supply voltage: 5 V (USB), 5 V (VIN), 5-10 V (RAW)
• I/O pin voltages: 5 V
• I/O ports: 18 (including 5 PWM outputs and 4 analog inputs)
• Communication interfaces: UART, SPI, I2C
• Dimensions: 37 mm x 18 mm x 6 mm (without USB-C connector)
• Pin pitch: 2.54 mm (goldpin headers for soldering included in the kit)

Example Arduino applications

• Building custom game controllers and USB keyboards (native HID support)
• Compact weather stations and sensor systems
• Smart home and building automation projects
• Controlling LED strips and lighting systems
• Prototyping electronics that require a small footprint

Benefits of choosing this module

• Compact size for installation in projects with very limited space
• Direct USB communication eliminating the need for external programmers
• Modern USB-C connector for convenient and reliable connection to a computer
• Built-in protection in the form of a PTC fuse safeguarding the USB port from damage
• Full compatibility with the popular and easy-to-use Arduino IDE