Arduino Leonardo R3 compatible board

The Arduino Leonardo R3 compatible board is a arduino + microcontroller component used by makers, students and engineers for electronics and embedded-systems projects.

Build USB-native projects with this Arduino Leonardo R3 compatible board featuring the ATmega32U4 microcontroller with built-in USB communication. Unlike other Arduino boards, the Leonardo eliminates the need for a secondary processor, allowing it to appear as a mouse, keyboard, or joystick to a connected computer.

Specifications

• Board Type: Arduino Leonardo R3 Compatible
• Microcontroller: ATmega32U4
• Operating Voltage: 5V
• Input Voltage (Recommended): 7-12V
• Input Voltage (Limit): 6-20V
• Digital I/O Pins: 20 (7 PWM capable)
• Analog Input Pins: 12
• DC Current per I/O Pin: 40 mA
• DC Current for 3.3V Pin: 50 mA
• Flash Memory: 32 KB (4 KB used by bootloader)

Why Choose Arduino Leonardo R3 compatible board?

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Key Features of Arduino Leonardo R3 compatible board

• Native USB Communication: ATmega32U4 handles USB directly - emulate a keyboard, mouse, joystick, or MIDI controller without additional hardware
• More Analog Inputs: 12 analog input channels compared to 6 on the Uno, ideal for sensor-heavy projects
• 20 Digital I/O Pins: 7 PWM outputs and 12 analog inputs give you maximum flexibility for complex designs
• Full Arduino IDE Compatibility: Program using the familiar Arduino IDE with access to thousands of libraries and community resources
• Shield Compatible: Standard Arduino R3 form factor supports most existing Arduino shields and accessories
• Micro-USB Connector: Modern, widely available connector for programming and power delivery
• Cost-Effective: High-quality compatible board delivering identical performance at an accessible price point
• Reliable Quality: Tested and verified for consistent performance across all pins and peripherals
• Built-in USB HID: The ATmega32U4 appears as a native USB device to your computer, enabling you to send keystrokes, mouse movements, and gamepad inputs directly - no external chips or drivers required
• Separate USB and Serial: The Leonardo provides a virtual serial port over USB for programming and debugging while keeping hardware serial (pins 0 and 1) free for communication with other devices like GPS modules or Bluetooth
• 12 Analog Channels: Pins A0-A11 provide 10-bit analog-to-digital conversion, with some analog inputs mapped to digital pins (D4, D6, D8, D9, D10, D12) for versatile sensor integration
• PWM Outputs: Seven pins support pulse-width modulation for motor speed control, LED dimming, servo control, and audio generation
• SPI and I2C Support: Dedicated SPI header and I2C (TWI) on pins 2 (SDA) and 3 (SCL) for connecting displays, sensors, memory modules, and other peripherals
• External Interrupts: Five interrupt pins (0, 1, 2, 3, 7) for responsive real-time event handling in time-critical applications

Perfect For

• Custom USB Keyboard/Macropad: Build a programmable keyboard, shortcut pad, or stream deck with custom key mappings using the Leonardo's native HID capabilities
• USB Game Controller: Design your own joystick, flight stick, racing wheel, or arcade controller that connects directly as a standard gamepad
• MIDI Controller: Create custom MIDI instruments

Frequently Asked Questions

Customer Support

Email: techdepotindia@gmail.com

WhatsApp: Available for setup and troubleshooting help

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