Description
Arduino Leonardo Development Board (ATmega32U4)
Step up your micro-controller game with the Arduino Leonardo! While it shares the familiar footprint and pin layout of the classic Arduino Uno, the Leonardo holds a powerful secret under the hood: the ATmega32U4 processor. Unlike other boards that rely on a secondary chip for USB communication, the ATmega32U4 handles USB connectivity natively.
What does this mean for your projects? Your computer can recognize the Leonardo directly as a USB Human Interface Device (HID)—like a real mouse, keyboard, or joystick! This opens up a whole new world of custom PC controls, macro pads, and gaming interfaces that standard microcontrollers simply can’t handle out of the box.
Key Features
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Native USB HID Emulation: Effortlessly emulate a USB keyboard, mouse, or game controller with simple, built-in Arduino IDE code functions.
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Expanded I/O Power: Offers 20 digital I/O pins, including 12 analog inputs (compared to the Uno’s 6) and 7 PWM outputs for precise motor and LED control.
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Dedicated SPI Pins: Uses an ICSP header for hardware SPI communication, keeping your digital pins open for additional sensors and shields.
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Uno-Shield Compatible: Standard Arduino layout ensures seamless compatibility with most existing expansion shields, sensors, and modules.
Technical Specifications
| Parameter | Specification |
| Microcontroller | ATmega32U4 (8-bit AVR) |
| Operating Voltage | 5V DC |
| Input Voltage (Recommended) | 7V – 12V DC (via DC Jack or VIN pin) |
| Digital I/O Pins | 20 total (7 provide PWM output) |
| Analog Input Channels | 12 pins |
| Flash Memory | 32 KB (4 KB used by bootloader) |
| SRAM / EEPROM | 2.5 KB SRAM / 1 KB EEPROM |
| Clock Speed | 16 MHz |
| USB Interface | Micro-USB (Direct Native USB 2.0) |


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