--- product_id: 56050266 title: "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: "661 kr" currency: NOK in_stock: true reviews_count: 12 url: https://www.desertcart.no/products/56050266-leonardo-with-headers-a000057-atmega32u4-microcontroller-16mhz-20-digital-i store_origin: NO region: Norway --- # 16 MHz ATmega32U4 MCU 20 Digital I/O pins + 7 PWM outputs Built-in USB HID & communication 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:** 661 kr **Availability:** ✅ In Stock ## Summary > 🚀 Prototype like a pro, code like a wizard! ## Quick Answers - **What is this?** 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?** 661 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/56050266-leonardo-with-headers-a000057-atmega32u4-microcontroller-16mhz-20-digital-i) ## 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 access to a thriving community and libraries. - • **Expansive I/O Arsenal:** 20 digital pins and 12 analog inputs empower you to build intricate, multi-sensor systems. - • **Plug & Play Programming:** Built-in USB communication means no extra converters—just connect and code instantly. - • **Powerhouse Microcontroller:** Harness the 16 MHz ATmega32U4 for lightning-fast prototyping and complex projects. - • **Seamless USB HID Emulation:** Transform your board into a custom keyboard, mouse, or game controller with native USB support. ## Overview The Arduino Leonardo with Headers (A000057) is a versatile microcontroller board powered by the 16 MHz ATmega32U4 chip, featuring 20 digital I/O pins (7 PWM), 12 analog inputs, and built-in USB HID support. Its native USB communication enables it to emulate devices like keyboards and mice, eliminating the need for external converters. Fully compatible with the Arduino IDE, it offers a seamless development experience for makers and professionals aiming to create custom USB peripherals and complex IoT projects. ## Description “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.” 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. ## 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 | 40,450 in Computers & Accessories (See Top 100 in Computers & Accessories) 234 in Motherboards | | Box Contents | microprocessor | | Brand Name | Arduino | | Compatible Devices | Personal Computer | | Country Of Origin | Italy | | Cpu Model | None | | Customer Reviews | 4.7 4.7 out of 5 stars (820) 4.7 out of 5 stars | | 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 centimetres | | Item Weight | 25 Grams | | Manufacturer | Arduino | | Manufacturer Part Number | A000057 | | Memory Storage Capacity | 1 KB | | Model Name | Leonardo | | Model Number | A000057 | | Network Connectivity Technology | Ethernet, USB | | Number Of Items | 1 | | Operating System | Linux | | Processor Brand | Arduino | | Processor Speed | 16 MHz | | Ram Memory Technology | DDR | | 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:** 16 MHz - **Memory storage capacity:** 1 KB - **Model name:** Leonardo ## Images ![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/61u4T3dMbFL.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 ### ⭐⭐⭐⭐⭐ This has a real crystal oscillator for the main processor *by on Reviewed in the United Kingdom 11 June 2021* Most Arduino e.g. the UNO, make do with a ceramic resonator.The crystal you see on a UNO is for the serial interface.The Leonardo has only one processor. Timing for serial and itself is "spot on" and from the only crystal on the board. The difference in accuracy is 20 sec month vs 5 hours.If your project needs accurate timing e.g. better than 16MHz +/- 0.5% then you really need a version with a crystal. If your project needs a Shield, a crystal, and a 5V operation then this is the only option.Code compatibility is solved if you are writing your own code and use the recommended constants e.g. A0 and not 0 for an analog port. IF you need extra I/O or timers then this has more of these.The official price is also less than an Arduino so it's a hidden gem IMHO. ### ⭐⭐⭐⭐⭐ GuR - Perfect for intended use *by on Reviewed in the United Kingdom 11 June 2022* Dude, Genu1ne user ReVIewz - Perfect for intended use if that is storing your passwords on imbedded flash memory and hatting with an NFC shield to make it so you can login to your PC by waving your hand over your desk (disclaimer - must have over £100 NFC implant injected into your hand for PoC to work... or an NFC ring) ### ⭐⭐⭐⭐⭐ Does what it says *by on Reviewed in the United Kingdom 29 November 2020* Used as part of a 3D build to make an autopilot module for flight sim 2020 ## Frequently Bought Together - Arduino Leonardo with Headers [A000057] - HiLetgo USB Host Shield for Arduino UNO Support Google Android ADK USB HUB - HiLetgo 5pcs USB to Serial USB to TTL CH340 Module with STC Microcontroller Download Adapter --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.no/products/56050266-leonardo-with-headers-a000057-atmega32u4-microcontroller-16mhz-20-digital-i](https://www.desertcart.no/products/56050266-leonardo-with-headers-a000057-atmega32u4-microcontroller-16mhz-20-digital-i) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-25*