--- product_id: 283529595 title: "Leonardo R3 Development Board with USB Cable for Arduino" brand: "keyestudio" price: "€ 38.68" currency: EUR in_stock: true category: "Keyestudio" url: https://www.desertcart.at/products/283529595-leonardo-r3-development-board-with-usb-cable-for-arduino store_origin: AT region: Austria --- # 5V working voltage, 40mA max current 23 digital I/O ports ATMEGA32U4 MCU, 16 MHz speed Leonardo R3 Development Board with USB Cable for Arduino **Brand:** keyestudio **Price:** € 38.68 **Availability:** ✅ In Stock ## Summary > 🚀 Unlock your maker potential with the sleek, powerful Leonardo R3! ## Quick Answers - **What is this?** Leonardo R3 Development Board with USB Cable for Arduino by keyestudio - **How much does it cost?** € 38.68 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/283529595-leonardo-r3-development-board-with-usb-cable-for-arduino) ## Best For - keyestudio enthusiasts ## Why This Product - Trusted keyestudio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Connectivity:** 23 digital I/O ports plus 7 PWM and 12 analog inputs for limitless project possibilities - • **Eco-Conscious Engineering:** FCC & CE certified, crafted with environmentally friendly materials and rigorous quality testing - • **Plug & Play Compatibility:** Seamlessly integrates with Arduino IDE and USB connectivity for hassle-free coding and debugging - • **Pro-Grade Microcontroller:** Equipped with original ATMEL ATMEGA32U4 chip delivering 16 MHz processing speed for smooth execution - • **Power-Optimized Performance:** Stable 5V operation with robust 40mA current per port ensures reliable hardware interfacing ## Overview The KEYESTUDIO Leonardo R3 Development Board is a professional-grade, Arduino-compatible microcontroller featuring 23 digital I/O ports, 7 PWM outputs, and 12 analog inputs. Powered by the original ATMEL ATMEGA32U4 chip running at 16 MHz, it supports stable 5V operation with up to 40mA current per port. Certified FCC and CE, it combines eco-friendly manufacturing with robust performance, making it the ideal choice for millennial makers and developers seeking versatile, reliable prototyping hardware. ## Description Buy KEYESTUDIO Leonardo R3 Development Board with USB Cable for Arduino online on desertcart.ae at best prices. ✓ Fast and free shipping ✓ free returns ✓ cash on delivery available on eligible purchase. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0786LJQ8K | | Best Sellers Rank | #8,483 in Computers ( See Top 100 in Computers ) #89 in Single-Board Computers | | Brand | KEYESTUDIO | | Built-In Media | Keybord, Mouse | | CPU Model | Intel Core i9 | | CPU model | Intel Core i9 | | CPU speed | 16 MHz | | Compatible Devices | Personal Computer, Laptop, Tablet | | Connectivity Technology | USB | | Customer Reviews | 4.6 out of 5 stars 624 Reviews | | Installed RAM memory size | 5 MB | | Item Dimensions L x W x H | 6.9L x 5.3W x 0.4H centimeters | | Item Weight | 0.13 Pounds | | Manufacturer | KEYESTUDIO | | Memory Storage Capacity | 32 KB | | Memory storage capacity | 32 KB | | Mfr Part Number | ks0248 | | Model Name | ATMEGA32U4-AU | | Model Number | KE-0011 | | Model name | ATMEGA32U4-AU | | Number of Packs | 1 | | Operating System | Linux | | Processor Brand | Microchip Technology | | Processor Count | 1 | | Processor Speed | 16 MHz | | RAM Memory Installed | 5 MB | | RAM Memory Technology | no | | UPC | 600346571761 606184533497 600346574199 | | Unit Count | 1 Count | | Wireless Compability | Bluetooth | ## Product Details - **Brand:** KEYESTUDIO - **Model name:** ATMEGA32U4-AU - **Installed RAM memory size:** 5 MB - **Memory storage capacity:** 32 KB - **CPU model:** Intel Core i9 ## Images ![Leonardo R3 Development Board with USB Cable for Arduino - Image 1](https://m.media-amazon.com/images/I/61w4INl9jaL.jpg) ## Questions & Answers **Q: is this leonardo HID compatible?** A: Yes **Q: Is this the same as a normal leonardo, or does the "development" in the name imply some other functionality?** A: I was looking for an UNO R3 (2016!) for a Grove sensor project. It is a regular, normal UNO board. I used the Arduino IDE to program Seeed Studio's Grove watering, temperature sensors. I also purchased a similar board "MakerBest Hight Quality Compatible Arduino UNO R3 ATmega328P Development Kits " for Elenco's Snapno kit. Both work fine and both for developing projects using UNO boards. Hope this helps **Q: will this device run micropython?** A: sorry ,it can't **Q: Is there a program to be installed?** A: It's Ardunio-based, so you'll have to write the code and load it in. There are a lot of tutorials out on the web and pre-existing code that make it easy (or easier than starting from scratch). ## Frequently Bought Together - KEYESTUDIO Leonardo R3 Microcontroller Development Board with USB Cable Kit for Arduino Project - EDGELEC 120pcs Breadboard Jumper Wires 10cm 15cm 20cm 30cm 40cm 50 cm 100cm Wire Length Optional Dupont Cable Assorted Kit Male to Female Male to Male Female to Female Multicolored Ribbon Cables - WWZMDiB Mini USB 2.0 to TTL Converter Serial Adapter 3.3V 5V Compatible with CP2102 Chip UART Programming --- ## 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.at/products/283529595-leonardo-r3-development-board-with-usb-cable-for-arduino](https://www.desertcart.at/products/283529595-leonardo-r3-development-board-with-usb-cable-for-arduino) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-05*