# Development Board Arduino Leonardo

**URL:** https://aio.lv/en/product--arduino-a000057--4146664
**Data updated:** 2025-12-29 15:43 (EET)
**Category:** Educational Toys & Puzzles
**Manufacturer:** Arduino
**Manufacturer code:** A000057
**EAN:** 8058333491141
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 39.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 33.05 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--arduino-a000057--4146664

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The Arduino Leonardo development board features the ATMega32u4 microcontroller with a frequency of 16 MHz. It has 32 KB of flash memory, 2.5 KB of SRAM, and 1 KB of EEPROM. The board operates at 5 V with a DC input voltage range of 7-12 V and can handle input voltages up to 20 V. Its compact dimensions of 53.3 x 68.6 mm and lightweight design (20 g) make it ideal for various projects. The Leonardo is perfect for USB applications due to its built-in USB communication capabilities.

## Long description

The Arduino Leonardo is a development board based on the ATmega32u4 microcontroller running at 16 MHz. It integrates 20 digital I/O pins (7 PWM-capable), 12 analog inputs, 32 KB flash memory, 2.5 KB SRAM and 1 KB EEPROM. The board includes a micro USB connector, power jack, ICSP header and reset button and can be powered via USB, an AC-to-DC adapter or battery. Built-in USB communication allows the Leonardo to present itself to a connected computer as a virtual COM port and also as USB HID devices such as a keyboard or mouse.
Advantages
The Leonardo’s ATmega32u4 with native USB avoids the need for a secondary USB-to-serial processor, simplifying the design and enabling direct USB device emulation. Compact dimensions (53.3 x 68.6 mm) and light weight (about 20 g) make the board convenient for embedded and portable projects. Standard power specifications (operating at 5 V, recommended input 7–12 V) and common interfaces (digital, analog, ICSP) provide compatibility with existing Arduino shields and many peripherals.
Suitable for
 USB HID projects (keyboard, mouse emulation)
 Prototyping microcontroller-based devices
 Educational electronics and workshops
 Embedded projects requiring compact, low-weight boards
Key specifications
 Microcontroller: ATmega32u4
 Clock speed: 16 MHz
 Flash: 32 KB; SRAM: 2.5 KB; EEPROM: 1 KB
 Digital I/O: 20 pins (7 PWM outputs)
 Analog inputs: 12
 Operating voltage: 5 V
 Input voltage (recommended): 7–12 V; maximum rated input up to 20 V
 Interfaces: micro USB, power jack, ICSP header, reset button
 Dimensions: 53.3 x 68.6 mm; Weight: ~20 g
 Manufacturer: Arduino; MPN: A000057; EAN: 8058333491141
How to use
Connect the Leonardo to a computer via a micro USB cable to program it using the Arduino IDE and to provide power. Alternatively, supply power through the barrel power jack or an appropriate battery within the recommended voltage range. Select the correct board and port in the IDE, upload sketches as usual, and use the available digital and analog pins for sensors, actuators and communication. When using USB HID features, configure the sketch to emulate keyboard or mouse behavior; the board will enumerate as the chosen device when connected.
Usage recommendations
Use a stable 7–12 V power source when powering through the barrel jack and avoid supplying voltages above the board’s rated maximum. For reliable USB HID operation, test device enumeration on the target host system and ensure sketches properly handle USB reconnection and debouncing of input events.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.02 kg |
| Flash memory | 0.032 MB |
| Form factor | Arduino |
| Ethernet LAN | No |
| Wi-Fi | No |
| Operating voltage | 5 V |
| DC input voltage | 7-12 |
| USB ports quantity | 1 |
| Microcontroller model | ATMega32u4 |
| Microcontroller frequency | 16 MHz |
| SRAM (Static Random Access Memory) | 2.5 KB |
| EEPROM (Electrically Erasable Programmable Read-Only Memory) | 1 KB |
| Number of analog I/O pins | 12 |
| Number of digital I/O pins | 20 |
| PWM digital I/O pins | 7 |
| Input voltage (max) | 6 - 20 |
| DC current per I/O pin | 40 mA |
| Board dimensions | 53.3 x 68.6 |

## FAQ

### How much does the Development Board Arduino Leonardo cost, and is it available for purchase?

The price is 39.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 23 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 23.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Cash payment, Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Arduino products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Arduino service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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