---
product_id: 275865597
title: "Leonardo with Headers [A000057] - Versatile Microcontroller Board with USB HID Support, Ideal for Keyboard, Mouse, and Joystick Projects"
brand: "arduino"
price: "264 Lei"
currency: RON
in_stock: true
reviews_count: 6
category: "Arduino"
url: https://www.desertcart.ro/products/275865597-leonardo-with-headers-a000057-versatile-microcontroller-board-with-usb-hid
store_origin: RO
region: Romania
---

# 16 MHz crystal oscillator for smooth processing 20 digital I/O pins for versatile connectivity Native USB HID support for keyboard & mouse emulation Leonardo with Headers [A000057] - Versatile Microcontroller Board with USB HID Support, Ideal for Keyboard, Mouse, and Joystick Projects

**Brand:** arduino
**Price:** 264 Lei
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your maker game with the Arduino Leonardo—where creativity meets precision!

## Quick Answers

- **What is this?** Leonardo with Headers [A000057] - Versatile Microcontroller Board with USB HID Support, Ideal for Keyboard, Mouse, and Joystick Projects by arduino
- **How much does it cost?** 264 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/275865597-leonardo-with-headers-a000057-versatile-microcontroller-board-with-usb-hid)

## 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

- • **20 Digital I/O Pins:** Unleash creativity with 20 pins, including 7 PWM outputs and 12 analog inputs for ultimate control.
- • **Compact & Lightweight:** At just 25g and pocket-sized, it fits effortlessly into any prototype or workspace.
- • **Arduino IDE Compatible:** Program with ease using the trusted Arduino IDE—join a global community of innovators.
- • **16 MHz Crystal Precision:** Reliable clock speed ensures your code runs flawlessly every time—no lag, just performance.
- • **Plug & Play USB HID Magic:** Seamlessly transforms into keyboard, mouse, or joystick—perfect for next-level DIY projects.

## Overview

The Arduino Leonardo (A000057) is a compact, 5V microcontroller board featuring 20 digital I/O pins, a 16 MHz crystal oscillator, and native USB HID support. Ideal for projects requiring keyboard, mouse, or joystick emulation, it offers seamless integration with the Arduino IDE and a lightweight design perfect for professional prototyping and creative innovation.

## Description

Buy Arduino Leonardo with Headers [A000057] - Versatile Microcontroller Board with USB HID Support, Ideal for Keyboard, Mouse, and Joystick Projects online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase.

Review: DUBAI - WE BUY THIS IN FEB AND WE TRY IT LAS WEEK BUT ITS NOT WORKING DEFECTIVE PARTS
Review: Arduino Leonardo は、ほとんどが Arduino Uno と同じ構成で使えて、さらにパソコンに接続した状態で、マウスやキーボードの代わりにもなる便利なボードです。つまり、他のスイッチやハードウェアをつけなくても単体で遊べる範囲が多いのが特徴です。 Arduino を紹介した多くのページでは、Arduino を USBに接続すると自動的にドライバの組み込みがされるように書かれてますが、2/12にダウンロードしたIDE環境「Arduino 1.0.5-R2」＋ Windows 7 の場合は、そうではなかったので、少し補足しておきます。参考になる人がいれば幸いです。 1.Windows 7 でのドライバのセットアップ方法 1.1 「Arduino 1.0.5」を展開したフォルダの「drivers」フォルダにある「Old_Arduino_Drivers.zip」を展開して、中にある「Arduino Leonardo.inf」を「drivers」フォルダの中に書き出します。 1.2 Windows 7 が 32bit版なら、dpinst-x86.exe を実行し、ドライバをインストールします。 64bit版なら、dpinst-amd64.exe を実行します。 1.3 そののちに Arduino Leonardo を USBに接続すると「Arduino Leonardo」がきちんと認識されるようになります。 2.ボード単体で遊べるスケッチ (サンプルコード) 「01.Basics」＞「Blink」「Fade」で、ボード上のLED点灯を試せます。 「04.Communifation」＞「PhysicalPixel」は、IDEの「ツール」＞「シリアルモニタ」を開いて、H, Lという文字を送信することで LEDのオフ・オンをコントロールするデモ。 「05.Keyboard」＞「Keyboard」＞「KeyboardMessage」も同様にシリアルモニタ上で入力した文字を書き換えるデモ。 プログラムコードはシンプルなので、プログラムに振れたことがある人なら、誰でも簡単に動きを理解することができるのではないでしょうか。

## Features

- Acts as a USB Input Device on a Computer
- 20 digital I/O Pins (7 may be PWM Outputs; 12 as Analog)
- 16 MHz Crystal Oscillator
- Developed with Adafruit

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B008A36R2Y |
| Best Sellers Rank | #32,750 in Computers ( See Top 100 in Computers ) #434 in Single-Board Computers |
| Brand | Arduino |
| Built-In Media | microprocessor |
| CPU Model | None |
| Compatible Devices | PC, Smartphone, Sensor, Actuator, Microcontroller |
| Connectivity Technology | I2C, USB |
| Customer Reviews | 4.7 4.7 out of 5 stars (802) |
| EU Spare Part Availability Duration | 1 Years |
| External Testing Certification | Não aplicável |
| Global Trade Identification Number | 08058333491141 |
| Item Dimensions L x W x H | 7.6L x 2.5W x 5.1H centimeters |
| Item Weight | 25 Grams |
| Manufacturer | Arduino |
| Memory Storage Capacity | 1 KB |
| Mfr Part Number | A000057 |
| Model Name | Leonardo |
| Model Number | A000057 |
| Operating System | Arduino IDE |
| Processor Brand | Microchip Technology |
| Processor Count | 1 |
| Processor Speed | 1.6 GHz |
| RAM Memory Technology | DDR |
| Smart Home Compatibility | Not Smart Home Compatible |
| Total Usb Ports | 1 |
| UPC | 722204635603 736104505607 701748716719 736104504761 727908488593 720405523866 722204636327 712141158563 736104505812 |
| Wireless Compability | 802.11b |

## Product Details

- **Brand:** Arduino
- **CPU model:** None
- **CPU speed:** 1.6 GHz
- **Memory storage capacity:** 1 KB
- **Model name:** Leonardo

## Images

![Leonardo with Headers [A000057] - Versatile Microcontroller Board with USB HID Support, Ideal for Keyboard, Mouse, and Joystick Projects - Image 1](https://m.media-amazon.com/images/I/713tpAB65zL.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

### ⭐ DUBAI
*by E***C on 1 December 2022*

WE BUY THIS IN FEB AND WE TRY IT LAS WEEK BUT ITS NOT WORKING DEFECTIVE PARTS

### ⭐⭐⭐⭐⭐ Review
*by け***6 on 16 February 2014*

Arduino Leonardo は、ほとんどが Arduino Uno と同じ構成で使えて、さらにパソコンに接続した状態で、マウスやキーボードの代わりにもなる便利なボードです。つまり、他のスイッチやハードウェアをつけなくても単体で遊べる範囲が多いのが特徴です。 Arduino を紹介した多くのページでは、Arduino を USBに接続すると自動的にドライバの組み込みがされるように書かれてますが、2/12にダウンロードしたIDE環境「Arduino 1.0.5-R2」＋ Windows 7 の場合は、そうではなかったので、少し補足しておきます。参考になる人がいれば幸いです。 1.Windows 7 でのドライバのセットアップ方法 1.1 「Arduino 1.0.5」を展開したフォルダの「drivers」フォルダにある「Old_Arduino_Drivers.zip」を展開して、中にある「Arduino Leonardo.inf」を「drivers」フォルダの中に書き出します。 1.2 Windows 7 が 32bit版なら、dpinst-x86.exe を実行し、ドライバをインストールします。 64bit版なら、dpinst-amd64.exe を実行します。 1.3 そののちに Arduino Leonardo を USBに接続すると「Arduino Leonardo」がきちんと認識されるようになります。 2.ボード単体で遊べるスケッチ (サンプルコード) 「01.Basics」＞「Blink」「Fade」で、ボード上のLED点灯を試せます。 「04.Communifation」＞「PhysicalPixel」は、IDEの「ツール」＞「シリアルモニタ」を開いて、H, Lという文字を送信することで LEDのオフ・オンをコントロールするデモ。 「05.Keyboard」＞「Keyboard」＞「KeyboardMessage」も同様にシリアルモニタ上で入力した文字を書き換えるデモ。 プログラムコードはシンプルなので、プログラムに振れたことがある人なら、誰でも簡単に動きを理解することができるのではないでしょうか。

### ⭐⭐⭐⭐⭐ Review
*by C***N on 30 September 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

## Frequently Bought Together

- Arduino Leonardo with Headers [A000057]
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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-04-30*