Arduino Leonardo

Professional Arduino Leonardo R3 for Advanced USB Projects

The Arduino Leonardo functions as a premier microcontroller board based on the ATmega32U4. Unlike previous boards, the Leonardo features a unique architecture where the microcontroller handles USB communication directly. Consequently, this design eliminates the need for a secondary processor. This integration allows the Leonardo to offer increased flexibility in how it communicates with a computer. Furthermore, the board operates at 5V with a 16MHz crystal oscillator, providing a standard and reliable environment for hobbyists and professionals alike.

Native HID Support and Versatile Communication

Specifically, the Arduino Leonardo can appear to a connected computer as a generic keyboard or mouse. This Human Interface Device (HID) capability makes it the ideal choice for creating custom game controllers, macro pads, and assistive technology devices. Moreover, the board separates the virtual serial port from the hardware serial port ($Serial1$). Consequently, this allows you to maintain a debug connection via USB while simultaneously communicating with GPS modules or Bluetooth adapters over the physical pins.

Expanded I/O and Analog Capabilities

Additionally, the Leonardo offers more analog inputs and PWM channels than the standard Arduino Uno. Specifically, it features 20 digital input/output pins. Of these, 7 pins support Pulse Width Modulation (PWM) and 12 pins function as analog inputs. This expanded capability allows for more complex sensor arrays and motor control layouts. Furthermore, the board includes a built-in micro USB connector for programming and power. Transitioning to the Leonardo is simple for those familiar with the Arduino ecosystem, as it supports all standard libraries and Shields.

Verified Data Sheet (Technical Specifications)