# Arduino Leonardo with Headers

**Type:** Product page · **SKU:** A000057 · **Brand:** [Arduino](https://core-electronics.com.au/brands/arduino-australia) · **GTIN:** 7630049200166
**Page:** https://core-electronics.com.au/arduino-leonardo.html ([markdown](https://core-electronics.com.au/arduino-leonardo.html.md))

With the Arduino LEONARDO, you can take advantage of the integrated USB converter to emulate a PC keyboard or mouse. It has two Serial ports, more PWM outputs and more analog inputs

## Pricing

- **Price:** $39.35 (inc GST) — $35.77 AUD, exc GST
- **Quantity discounts:** 25+ $33.98 (exc GST) · 100+ $32.20 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 9 today, and up to 500 more in 10–14 days.

## Description

The Arduino Leonardo is a microcontroller board based on the ATmega32u4 (datasheet). It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started.

The Leonardo differs from all preceding boards in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Leonardo to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port. It also has other implications for the behavior of the board; these are detailed on the[ Getting started with the Arduino Leonardo.](https://www.arduino.cc/en/Guide/ArduinoLeonardoMicro)

### Related Boards

If you are interested in boards with similar functionality, at Arduino you can find:

- [**Arduino Leonardo without Headers**](https://core-electronics.com.au/arduino-leonardo-without-headers.html)
- [**Arduino Micro**](https://core-electronics.com.au/arduino-micro.html)

### Getting started

Find inspiration for your projects with Leonardo board from our tutorial platform [Project Hub.](https://create.arduino.cc/projecthub?by=part&part_id=21297&sort=popular)

The [Getting started with the Arduino Leonardo](https://www.arduino.cc/en/Guide/ArduinoLeonardoMicro)page contains all the information you need to configure your board, use the [Arduino Software (IDE)](https://www.arduino.cc/en/Main/Software), and start tinkering with coding and electronics.

From the [Tutorials](https://www.arduino.cc/en/Tutorial/HomePage?from=Main.Tutorials) section you can find examples from libraries and built-in sketches as well other useful information to expand your knowledge of the Arduino hardware and software.

## **Tech specs**

| **MICROCONTROLLER** | ATmega32u4 |
|---|---|
| **OPERATING VOLTAGE** | 5V |
| **INPUT VOLTAGE (RECOMMENDED)** | 7-12V |
| **INPUT VOLTAGE (LIMITS)** | 6-20V |
| **DIGITAL I/O PINS** | 20 |
| **PWM CHANNELS** | 7 |
| **ANALOG INPUT CHANNELS** | 12 |
| **DC CURRENT PER I/O PIN** | 40 mA |
| **DC CURRENT FOR 3.3V PIN** | 50 mA |
| **FLASH MEMORY** | 32 KB (ATmega32u4) of which 4 KB used by bootloader |
| **SRAM** | 2.5 KB (ATmega32u4) |
| **EEPROM** | 1 KB (ATmega32u4) |
| **CLOCK SPEED** | 16 MHz |
| **LENGH** | 68.6 mm |
| **WIDTH** | 53.3 mm |
| **WEIGHT** | 20 g |

## Documentation

### OSH: Schematics

The Arduino Leonardo is open-source hardware! You can build your own board using the following files:

- [EAGLE FILES IN .ZIP](https://core-electronics.com.au/attachments/localcontent/Leonardo-reference_3791773aa3a.zip)
- [SCHEMATICS IN .PDF](https://core-electronics.com.au/attachments/localcontent/Leonardo_Rev3d_sch_1601705f737.pdf)

### Pinout Diagram

![](https://core-electronics.com.au/attachments/localcontent/Pinout-Leonardo_latest_272821c84de.png)

Download the full pinout diagram as PDF [here](https://core-electronics.com.au/attachments/localcontent/Pinout-Leonardo_latest_24021a556e7.pdf).

## Guides for this product

- [Arduino Boards, Compared](https://core-electronics.com.au/guides/arduino/compare-arduino-boards/)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/a/0/a000057_iso_1.jpg)