Arduino Leonardo R3 compatible board

Leonardo R3 Board – Arduino Compatible (ATmega32U4)

The Leonardo R3 is an Arduino-compatible development board based on the powerful ATmega32U4 microcontroller. Unlike many other Arduino boards, the Leonardo features native USB support, allowing it to emulate USB devices like a keyboard, mouse, or game controller—making it ideal for HID (Human Interface Device) projects and USB-based applications.

With its compact form factor and versatile I/O options, this board is perfect for embedded systems, automation, DIY electronics, and robotics projects. It connects via a micro-USB port for both programming and power, removing the need for external USB-to-Serial adapters.

Key Features:

Microcontroller: ATmega32U4 (8-bit AVR)

Operating Voltage: 5V

Input Voltage (Recommended): 7V – 12V

Input Voltage (Limit): 6V – 20V

Digital I/O Pins: 20 (7 PWM capable)

Analog Input Pins: 12

Clock Speed: 16 MHz

Flash Memory: 32 KB (4KB used by bootloader)

SRAM: 2.5 KB

EEPROM: 1 KB

USB Interface: Micro-USB (for programming and power)

Native USB Support: Acts as a keyboard, mouse, or USB HID device

Compact & lightweight design

Fully compatible with the Arduino IDE

Specifications:

Dimensions (L x W x H): 68mm x 54mm x 20mm

Weight: 20g

Color: As shown in the images

Additional Details:

100% Arduino-compatible (Pro Micro compatible)

No need for an external USB-to-Serial converter

Ideal for USB HID, automation, and interactive input projects

Package Includes:

1 x Leonardo R3 Development Board (USB cable not included)