---
product_id: 1955480
title: "Arduino Leonardo with Headers [A000057] - ATmega32U4 Microcontroller, 16MHz, 20 Digital I/O Pins, 7 PWM, USB HID Support, Built-in USB Communication, Compatible with Arduino IDE for Custom Projects"
brand: "arduino"
price: "16577 Ft"
currency: HUF
in_stock: true
reviews_count: 13
category: "Arduino"
url: https://www.desertcart.hu/products/1955480-arduino-leonardo-with-headers-a000057-atmega32u4-microcontroller-16mhz-20-digital
store_origin: HU
region: Hungary
---

# 16MHz high-speed MCU Built-in USB HID support 20 digital I/O pins + 12 analog inputs Arduino Leonardo with Headers [A000057] - ATmega32U4 Microcontroller, 16MHz, 20 Digital I/O Pins, 7 PWM, USB HID Support, Built-in USB Communication, Compatible with Arduino IDE for Custom Projects

**Brand:** arduino
**Price:** 16577 Ft
**Availability:** ✅ In Stock

## Summary

> 🚀 Unlock your DIY genius with the Arduino Leonardo — where creativity meets USB magic!

## Quick Answers

- **What is this?** Arduino Leonardo with Headers [A000057] - ATmega32U4 Microcontroller, 16MHz, 20 Digital I/O Pins, 7 PWM, USB HID Support, Built-in USB Communication, Compatible with Arduino IDE for Custom Projects by arduino
- **How much does it cost?** 16577 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/1955480-arduino-leonardo-with-headers-a000057-atmega32u4-microcontroller-16mhz-20-digital)

## Best For

- arduino enthusiasts

## Why This Product

- Trusted arduino brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Arduino IDE Ready:** Jumpstart your innovation with full compatibility and a thriving community at your fingertips.
- • **Versatile I/O Arsenal:** 20 digital pins and 12 analog inputs empower intricate sensor and actuator setups.
- • **Powerhouse ATmega32U4 MCU:** Run complex projects smoothly at 16MHz with 32KB flash memory.
- • **Seamless USB HID Emulation:** Transform your board into a keyboard, mouse, or game controller—no extra hardware needed.
- • **Plug & Play USB Communication:** Direct USB connection means hassle-free programming and device integration.

## Overview

The Arduino Leonardo features a 16MHz ATmega32U4 microcontroller with 32KB flash memory, 20 digital I/O pins (7 PWM), and 12 analog inputs. Its standout capability is native USB HID support, allowing it to emulate keyboards, mice, and game controllers without extra components. With built-in USB communication and full Arduino IDE compatibility, it’s a compact, powerful board designed for advanced prototyping and custom USB device projects.

## Description

Product description ABOUT ARDUINO Arduino is the world’s leading open-source hardware and software ecosystem. The Company offers a range of software tools, hardware platforms and documentation enabling almost anybody to be creative with technology. Originally started as a research project by Massimo Banzi, David Cuartielles, Tom Igoe, Gianluca Martino, and David Mellis at the Interaction Design Institute of Ivrea in the early 2000s, it builds upon the Processing project, a language for learning how to code within the context of the visual arts developed by Casey Reas and Ben Fry as well as a thesis project by Hernando Barragan about the Wiring board. WHY ARDUINO? Inexpensive Arduino boards are relatively inexpensive compared to other microcontroller platforms. The least expensive version of the Arduino module can be assembled by hand, and even the pre-assembled Arduino modules cost not so high. Simple, clear programming environment The Arduino Software (IDE) is easy-to-use for beginners, yet flexible enough for advanced users to take advantage of as well. For teachers, it's conveniently based on the Processing programming environment, so students learning to program in that environment will be familiar with how the Arduino IDE works. Open source and extensible software The Arduino software is published as open source tools, available for extension by experienced programmers. The language can be expanded through C++ libraries, and people wanting to understand the technical details can make the leap from Arduino to the AVR C programming language on which it's based. Similarly, you can add AVR-C code directly into your Arduino programs if you want to. Open source and extensible hardware The plans of the Arduino boards are published under a Creative Commons license, so experienced circuit designers can make their own version of the module, extending it and improving it. Even relatively inexperienced users can build the breadboard version of the module in order to understand how it works and save money. ARDUINO CLASSICS Message from Massimo Banzi - co-founder “The Arduino philosophy is based on making designs rather than talking about them. It is a constant search for faster and more powerful ways to build better prototypes. We have explored many prototyping techniques and developed ways of thinking with our hands.” MOST POPULAR OF CLASSICS Arduino Uno R3 The ideal board for getting started with electronics, through fun and engaging hands-on projects. Arduino Due Perfect for powerful larger scale projects, the Arduino Due is based on a 32-bit ARM core microcontroller. Arduino Leonardo with Headers Microcontroller board based on the ATmega32u4 that has built-in USB communication. Arduino Mega 2560 Rev3 Designed for your most ambitious projects which require additional pins and extra memory. Ideal for devices like 3D printers. ARDUINO CREATE Connect, Create, Collaborate Arduino Create is an integrated online platform that enables Makers and Professional Developers to write code, access content, configure boards, and share projects. Go from an idea to finished IoT project quicker than ever before. With Arduino Create you can use an online IDE, connect multiple devices with the Arduino IoT Cloud, browse a collection of projects on Arduino Project Hub, and connect remotely to your boards with Arduino Device Manager. As well you can share your creations, along with step-by-step guides, schematics, references, and receive feedback from others.

Review: Powerful Microcontroller With Built In USB Communication - This board is an excellent choice for custom projects that need direct USB communication. The ATmega32U4 chip makes it stand out because it can act as a keyboard or mouse without extra libraries, which opens up a lot of creative possibilities. With 20 digital I/O pins, 7 PWM outputs, and multiple analog inputs, there is plenty of flexibility for sensors, LEDs, and control devices. The headers are sturdy and make prototyping easy on a breadboard or with jumper wires. Running at 16MHz, it is fast enough for most hobby and DIY applications. Setup with the Arduino IDE was seamless and sketches upload quickly over USB. The board has been reliable during testing, and the small size makes it easy to embed into projects. A great microcontroller for makers who want more functionality than a basic Uno while still keeping full compatibility with the Arduino ecosystem
Review: Great Arduino - The board comes certified Arduino built in Italy, so it is legit. The boarditselfisamazing. Compared to the bread and butter UNO R3, this board is much smaller of a profile then the UNO. The MicroUSB is so convent and nice to have. It slims down the overall profile of the board and means I now have more options for cables and so forth. The old giant ATMega is gone replaced instead by a much more robust ARM based processor. The chip itself is of the SMD tech, which you can see in they turns of the item. The board came shipped in a little box, but other then that, which isn't about the item and more of shipping/retailer then the board. I would recommend this board as it is the same board as the UNO but half the weight and with more compatibility options. Overall fantastic purchase and I would highly recommend this product to any and all persons interested in the related fields. UPDATE: I have successfully fried this board, rather easily I might add. However! One can not downgrade the product due to user error, and for that I still think the board is amazing. Even though all my digital pins are toast, the MicroUSB connection makes it a hell of a power supply. Just use a wall wart and use the Vin pin or the 3.3V & 5V pins to power your projects. The MircoUSB alone makes the whole product worth it in my opinion. Because I have several devices that utilize the MircoUSB connection, finding a wall wart to power this thing is effortless.

## Features

- ATmega32U4 Microcontroller: Powered by the ATmega32U4 microcontroller running at 16 MHz, with 32KB of flash memory, 2.5KB SRAM, and 1KB EEPROM, providing ample resources for a wide range of projects.
- USB HID Support: Unlike other Arduino boards, the Leonardo can emulate USB devices such as keyboards, mice, and game controllers, making it ideal for creating custom USB peripherals and human interface devices (HID).
- 20 Digital I/O Pins & 12 Analog Inputs: Offers 20 digital I/O pins (7 of which can be used for PWM output), 12 analog inputs, and 4 hardware serial ports, enabling complex I/O-intensive applications.
- Built-in USB Communication: Direct USB communication allows easy programming and allows the board to appear as a USB device, eliminating the need for an external USB-to-serial converter.
- Fully Compatible with Arduino IDE: Seamlessly integrates with the Arduino IDE, providing access to a wide array of libraries, examples, and community-driven projects for rapid development and prototyping.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008A36R2Y |
| Best Sellers Rank | #254 in Single Board Computers (Computers & Accessories) |
| Brand | Arduino |
| Built-In Media | User Manual |
| CPU Model | None |
| Compatible Devices | Personal Computer |
| Connectivity Technology | Ethernet, USB |
| Customer Reviews | 4.8 out of 5 stars 854 Reviews |
| EU Spare Part Availability Duration | 1 Years |
| External Testing Certification | Não aplicável |
| Global Trade Identification Number | 08058333491141 |
| Included Components | User Manual |
| Item Dimensions L x W x H | 3"L x 2"W x 1"H |
| Item Weight | 25 Grams |
| Manufacturer | Arduino |
| Memory Storage Capacity | 1 KB |
| Mfr Part Number | A000057 |
| Model Name | Leonardo |
| Model Number | A000057 |
| Operating System | Linux |
| Processor Count | 1 |
| RAM Memory Technology | DDR |
| Total Usb Ports | 1 |
| UPC | 722204635603 736104505607 701748716719 736104504761 727908488593 720405523866 722204636327 712141158563 736104505812 |
| Unit Count | 1 Count |
| Wireless Compability | 802.11b |

## Product Details

- **Brand:** Arduino
- **CPU Model:** None
- **Connectivity Technology:** Ethernet, USB
- **Memory Storage Capacity:** 1 KB
- **Model Name:** Leonardo

## Images

![Arduino Leonardo with Headers [A000057] - ATmega32U4 Microcontroller, 16MHz, 20 Digital I/O Pins, 7 PWM, USB HID Support, Built-in USB Communication, Compatible with Arduino IDE for Custom Projects - Image 1](https://m.media-amazon.com/images/I/713tpAB65zL.jpg)
![Arduino Leonardo with Headers [A000057] - ATmega32U4 Microcontroller, 16MHz, 20 Digital I/O Pins, 7 PWM, USB HID Support, Built-in USB Communication, Compatible with Arduino IDE for Custom Projects - Image 2](https://m.media-amazon.com/images/I/71o+kkAoDHL.jpg)
![Arduino Leonardo with Headers [A000057] - ATmega32U4 Microcontroller, 16MHz, 20 Digital I/O Pins, 7 PWM, USB HID Support, Built-in USB Communication, Compatible with Arduino IDE for Custom Projects - Image 3](https://m.media-amazon.com/images/I/71RPuk9iEvL.jpg)
![Arduino Leonardo with Headers [A000057] - ATmega32U4 Microcontroller, 16MHz, 20 Digital I/O Pins, 7 PWM, USB HID Support, Built-in USB Communication, Compatible with Arduino IDE for Custom Projects - Image 4](https://m.media-amazon.com/images/I/61m5cm47weL.jpg)

## Questions & Answers

**Q: Some say fake, some say genuine.  Which is it?**
A: Here is the problem, Amazon reviews are by the product name, not seller. So you will see reviews for both fake and real. If it's coming from China, rest assured it is a fake. If it's less than ~$18, it is most likely a fake. I purchased from mp3car store for about $19 and I received a genuine Arduino. Also keep in mind there are some legitimate clones that are perfectly legal, provided they do not use the Arduino name on the board - they may may use cheaper components (e.g. voltage regulator). But these ones on Amazon for around $12 are counterfeit since they use Arduino name and trademark and attempt to trick the buyer into thinking they got the real thing.It looks like Amazon has partially fixed the problem. Previously under "more buying choices" you would see the counterfeits. The tell tale sign was they were about $13. The have removed them, but you can still find them for sale under search term "Arduino Compatible". Amazon however should ban them from sale since they use Arduino name/trademark on board.Here is an example of a counterfeit board http://www.amazon.com/Development-Microcontroller-MEGA328P-ATMEGA16U2-Arduino/dp/B00G46X31W/ref=sr_1_11?s=electronics&ie=UTF8&qid=1392856538&sr=1-11&keywords=arduino+compatible

**Q: Does it come with USB connector?**
A: No, genuine Arduino units do not include the USB connector.  Some sellers are including USB cables with their 'knock off' boards, but selling them here on Amazon is against their terms of service.

**Q: how do I attach my USB plug to this board?**
A: You can use a Micro B cable to plug in this board.

**Q: it says have 20 I/O pin. but in picture, there are only 13, how to make use of the rest of IO?**
A: For the Leonardo, the AI pins (A0-A5) can be used as digital pins... See the Arduino website for more details. http://arduino.cc/en/Main/arduinoBoardLeonardo

## Customer Reviews

### ⭐⭐⭐⭐⭐ Powerful Microcontroller With Built In USB Communication
*by C***N on September 30, 2025*

This board is an excellent choice for custom projects that need direct USB communication. The ATmega32U4 chip makes it stand out because it can act as a keyboard or mouse without extra libraries, which opens up a lot of creative possibilities. With 20 digital I/O pins, 7 PWM outputs, and multiple analog inputs, there is plenty of flexibility for sensors, LEDs, and control devices. The headers are sturdy and make prototyping easy on a breadboard or with jumper wires. Running at 16MHz, it is fast enough for most hobby and DIY applications. Setup with the Arduino IDE was seamless and sketches upload quickly over USB. The board has been reliable during testing, and the small size makes it easy to embed into projects. A great microcontroller for makers who want more functionality than a basic Uno while still keeping full compatibility with the Arduino ecosystem

### ⭐⭐⭐⭐⭐ Great Arduino
*by J***N on April 7, 2013*

The board comes certified Arduino built in Italy, so it is legit. The boarditselfisamazing. Compared to the bread and butter UNO R3, this board is much smaller of a profile then the UNO. The MicroUSB is so convent and nice to have. It slims down the overall profile of the board and means I now have more options for cables and so forth. The old giant ATMega is gone replaced instead by a much more robust ARM based processor. The chip itself is of the SMD tech, which you can see in they turns of the item. The board came shipped in a little box, but other then that, which isn't about the item and more of shipping/retailer then the board. I would recommend this board as it is the same board as the UNO but half the weight and with more compatibility options. Overall fantastic purchase and I would highly recommend this product to any and all persons interested in the related fields. UPDATE: I have successfully fried this board, rather easily I might add. However! One can not downgrade the product due to user error, and for that I still think the board is amazing. Even though all my digital pins are toast, the MicroUSB connection makes it a hell of a power supply. Just use a wall wart and use the Vin pin or the 3.3V & 5V pins to power your projects. The MircoUSB alone makes the whole product worth it in my opinion. Because I have several devices that utilize the MircoUSB connection, finding a wall wart to power this thing is effortless.

### ⭐⭐⭐⭐⭐ Works great
*by S***M on January 5, 2025*

Legitimate product. Easy to set-up. Works great for Pokemon Automation Bot.

## Frequently Bought Together

- Arduino Leonardo with Headers [A000057]
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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-05-13*