--- product_id: 283529595 title: "KEYESTUDIO Leonardo R3 Development Board with USB Cable for Arduino" brand: "keyestudio" price: "5215 kr" currency: ISK in_stock: true url: https://www.desertcart.is/products/283529595-keyestudio-leonardo-r3-development-board-with-usb-cable-for-arduino store_origin: IS region: Iceland --- # 7 PWM Ports for Precision Control 12 Analog Input Ports 23 Digital I/O Ports KEYESTUDIO Leonardo R3 Development Board with USB Cable for Arduino **Brand:** keyestudio **Price:** 5215 kr **Availability:** ✅ In Stock ## Summary > 🚀 Unlock your innovation with KEYESTUDIO Leonardo R3 — where pro-grade meets open-source cool! ## Quick Answers - **What is this?** KEYESTUDIO Leonardo R3 Development Board with USB Cable for Arduino by keyestudio - **How much does it cost?** 5215 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/283529595-keyestudio-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 - • **Rich Sensor Input:** 12 analog inputs capture detailed environmental data for smarter, responsive designs. - • **Precision PWM Control:** 7 PWM ports deliver fine-tuned motor and LED management for professional-grade prototypes. - • **Robust Power Handling:** Supports 5V working voltage with up to 50mA current per port, ensuring stable performance under load. - • **Versatile Connectivity:** 23 digital I/O ports empower complex projects with seamless hardware integration. - • **Certified Quality & Eco-Friendly:** FCC & CE certified with environmentally conscious manufacturing—build your future responsibly. ## Overview The KEYESTUDIO Leonardo R3 Development Board is a fully compatible Arduino IDE board featuring an ATMEGA 32u4 chip, 23 digital I/O ports, 7 PWM ports, and 12 analog inputs. It operates at 5V with recommended input voltage of 7-12V, supports up to 50mA current per port, and is FCC & CE certified for quality and eco-friendly production. Ideal for millennial makers seeking reliable, versatile prototyping with a sleek yellow-black design. ## Description KEYESTUDIO Leonardo R3 Development Board with USB Cable for Arduino ## Features - Please NOTE: Open the Arduino IDE, you’ll need to click the “Tools”, then select the Board that corresponds to your Arduino. If you don't choose the correct development board type, it will cause the compilation to fail to transfer. So this is a place that needs special attention.KEYESTUDIO leonardo R3 is fully compatible with the official version, with the same circuit array - It is our newest open-source controller, which has cool yellow-black design and twenty-three digital I/O ports, seven PWM ports and twelve analog input ports - Maximum allowable current of 5V digital/analog port: 40 mA, and of 3.3V digital/analog port: 50 mA; Working voltage: 5V; Input voltage (recommended) : 7-12v - Has fcc and ce certification that they are made from environmentally friendly production technology and materials, made function,voltage, current testing before packaging - Main control chip is ATMEGA 32u4, adopting the United States ATMEL original. 【Tutorial download: 】https://fs.keyestudio.com/KS0248 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0786LJQ8K | | Best Sellers Rank | #563 in Single Board Computers (Computers & Accessories) | | Brand | KEYESTUDIO | | Built-In Media | NO | | CPU Model | 5X86 | | Compatible Devices | Computers (Windows, Mac OS X, Linux) | | Connectivity Technology | USB | | Customer Reviews | 4.6 4.6 out of 5 stars (633) | | Item Dimensions L x W x H | 2.7"L x 2.09"W x 0.17"H | | Item Weight | 2.08 ounces | | Manufacturer | keyes | | Memory Storage Capacity | 32 KB | | Mfr Part Number | ks0248 | | Model Name | KEYESTUDIO Leonardo R3 | | Model Number | KE-0011 | | Operating System | Windows 10 | | Processor Count | 1 | | Processor Speed | 16 MHz | | RAM Memory Installed | 5 MB | | RAM Memory Technology | SRAM | | UPC | 600346571761 606184533497 600346574199 | | 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 ![KEYESTUDIO 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.is/products/283529595-keyestudio-leonardo-r3-development-board-with-usb-cable-for-arduino](https://www.desertcart.is/products/283529595-keyestudio-leonardo-r3-development-board-with-usb-cable-for-arduino) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-04-23*