![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](https://m.media-amazon.com/images/I/61u4T3dMbFL._AC_SL3840_.jpg)
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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.
| 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 |
User
This has a real crystal oscillator for the main processor
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.
User
GuR - Perfect for intended use
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)
User
Does what it says
Used as part of a 3D build to make an autopilot module for flight sim 2020
User
I bought the Arduino Leonardo microcontroller and received a enclosure ...
I bought the Arduino Leonardo microcontroller and received a enclosure for Arduino. I have returned the product and have ordered another, and again I received an Arduino enclosure. The product is wrong.
User
Check where you want your Arduino to be sourced before buying!
Product works fine, but I received an arduino.org branded Leonardo, not the original (and proper) Arduino.cc branded product. I found an explanation of the difference on the arduino.cc blog for those that are interested, and it definitely convinced me that I would strongly have preferred to receive the latter.
User
Genuine article
Using this for a "button box" for DCS with tactile switches and potentiometers.Brilliant they included the bumper. Very easy to get going and PLENTY of guides online to get you started with your project
User
Nice DIY board
Better than my other board
User
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
User
Fonctionne impeccable !
Parfait pour mes petits projets, basique mais facile d'utilisation et grand choix de composants compatible sur le net pour nos projets !
User
Great for DIY projects
Good for money product
User
Better quality than any others. Works without grief.
Costs more. Works better. Consistantly. Nice details like labels on the headers and plastic base for mounting.Used in programable keyboard command center. Happy customer,
User
original y sin sorpresas
Llego a tiempo y es la placa original arduino, funcio o con solo enchufarla (bien sin el cable de datos). Todo tal cual lo esperado
Trustpilot
2 weeks ago
1 month ago