{"product_id":"arduino-uno-r4-compatible-board-wifi-clone-development-kit","title":"UNO R4 WiFi Compatible Development Board Microcontroller","description":"\u003cp\u003eExplore our selection of\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eUno R4 compatible\u003cspan\u003e \u003c\/span\u003eclone boards\u003c\/strong\u003e, offering the same powerful features as the official\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eArduino Uno R4 Minima and Uno R4 WiFi\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eat a more affordable price. These boards maintain full compatibility with the Arduino ecosystem, making them ideal for prototyping, IoT applications, and DIY projects.\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2 class=\"wp-block-heading\"\u003e\u003cstrong\u003eUNO R4 WIFI – Advanced Microcontroller with Wireless Connectivity\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUnlock the next level of innovation with this powerful development board, featuring Renesas’s RA4M1 microcontroller and Espressif’s ESP32-S3 for seamless wireless integration. Designed for makers, hobbyists, and engineers, this board retains the classic UNO form factor while delivering enhanced performance and expanded capabilities.\u003c\/p\u003e\n\u003ch3 class=\"wp-block-heading\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul class=\"wp-block-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUpgraded processing power with increased memory and a faster clock speed for complex projects.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMaintains the same pinout, form factor, and 5V support as previous UNO models, ensuring smooth integration with existing shields and accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless Connectivity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt-in Wi-Fi and Bluetooth via ESP32-S3 for effortless IoT applications and remote control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpanded Peripherals:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes a 12-bit DAC, CAN BUS, OP AMP, and HID support for advanced interfacing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Power Input:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eHandles up to 24V, ideal for powering motors, LEDs, and other high-power components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal-Time Applications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a Qwiic I2C connector, battery-powered RTC support, and an LED matrix for animations or data visualization.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable \u0026amp; User-Friendly:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBuilt-in error diagnostics and an OFF pin for power management, making it a robust choice for beginners and professionals alike.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 class=\"wp-block-heading\"\u003eUno R4 vs Uno R3: Key Advantages\u003c\/h2\u003e\n\u003cp\u003eThe Uno has been the cornerstone of the maker movement for nearly two decades, with the R3 version becoming the de facto standard for electronics hobbyists and educators worldwide. With the introduction of the R4 series (available in both Minima and WiFi variants)\u003c\/p\u003e\n\u003ch2 class=\"wp-block-heading\"\u003eComprehensive Comparison Table\u003c\/h2\u003e\n\u003cfigure class=\"wp-block-table\"\u003e\n\u003ctable class=\"has-fixed-layout\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eFeature Category\u003c\/th\u003e\n\u003cth\u003eSpecific Feature\u003c\/th\u003e\n\u003cth\u003eUno R3\u003c\/th\u003e\n\u003cth\u003eUno R4 Minima\u003c\/th\u003e\n\u003cth\u003eUno R4 WiFi\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProcessor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicrocontroller\u003c\/td\u003e\n\u003ctd\u003eATmega328P\u003c\/td\u003e\n\u003ctd\u003eRenesas R7FA4M1AB\u003c\/td\u003e\n\u003ctd\u003eRenesas R7FA4M1AB + ESP32-S3-MINI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eArchitecture\u003c\/td\u003e\n\u003ctd\u003e8-bit AVR\u003c\/td\u003e\n\u003ctd\u003e32-bit ARM Cortex-M4F\u003c\/td\u003e\n\u003ctd\u003e32-bit ARM Cortex-M4F + 32-bit Xtensa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eClock Speed\u003c\/td\u003e\n\u003ctd\u003e16 MHz\u003c\/td\u003e\n\u003ctd\u003e48 MHz\u003c\/td\u003e\n\u003ctd\u003e48 MHz (main), 240 MHz (WiFi coprocessor)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eFloating Point Unit\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMemory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFlash Memory\u003c\/td\u003e\n\u003ctd\u003e32 KB (0.5 KB bootloader)\u003c\/td\u003e\n\u003ctd\u003e256 KB + bootrom\u003c\/td\u003e\n\u003ctd\u003e256 KB + bootrom\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSRAM\u003c\/td\u003e\n\u003ctd\u003e2 KB\u003c\/td\u003e\n\u003ctd\u003e32 KB (with ECC)\u003c\/td\u003e\n\u003ctd\u003e32 KB (with ECC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eEEPROM\/Data Flash\u003c\/td\u003e\n\u003ctd\u003e1 KB EEPROM\u003c\/td\u003e\n\u003ctd\u003e8 KB data flash\u003c\/td\u003e\n\u003ctd\u003e8 KB data flash\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eI\/O\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital I\/O Pins\u003c\/td\u003e\n\u003ctd\u003e14 (6 PWM)\u003c\/td\u003e\n\u003ctd\u003e14 (compatible layout)\u003c\/td\u003e\n\u003ctd\u003e14 (compatible layout)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAnalog Inputs\u003c\/td\u003e\n\u003ctd\u003e6 (10-bit resolution)\u003c\/td\u003e\n\u003ctd\u003e6 (14-bit resolution)\u003c\/td\u003e\n\u003ctd\u003e6 (14-bit resolution)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital-to-Analog\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003ctd\u003e12-bit DAC\u003c\/td\u003e\n\u003ctd\u003e12-bit DAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eBuilt-in Display\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003e12×8 LED matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUART\/USART\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSPI\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eI²C\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWiFi\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eIEEE 802.11 b\/g\/n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eBluetooth\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eBluetooth 5 LE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB\u003c\/td\u003e\n\u003ctd\u003eFull-Speed (via adapter)\u003c\/td\u003e\n\u003ctd\u003eFull-Speed (native)\u003c\/td\u003e\n\u003ctd\u003eFull-Speed (native)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eCAN Bus\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePhysical\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB Connector\u003c\/td\u003e\n\u003ctd\u003eUSB-B\u003c\/td\u003e\n\u003ctd\u003eUSB-C\u003c\/td\u003e\n\u003ctd\u003eUSB-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003ePower Input Range\u003c\/td\u003e\n\u003ctd\u003e7-12V (max 20V)\u003c\/td\u003e\n\u003ctd\u003eUp to 24V\u003c\/td\u003e\n\u003ctd\u003eUp to 24V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eQwiic\/STEMMA QT Connector\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes (3.3V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eProgramming Interfaces\u003c\/td\u003e\n\u003ctd\u003eUSB\u003c\/td\u003e\n\u003ctd\u003eUSB, SWD\u003c\/td\u003e\n\u003ctd\u003eUSB, SWD, Wireless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecial Features\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRTC Battery Header\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes (VRTC pin)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eRemote-Off Header\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eAdvanced Peripherals\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eDMA, CRC, RNG, Crypto, Touch\u003c\/td\u003e\n\u003ctd\u003eDMA, CRC, RNG, Crypto, Touch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWireless Uploading\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSoftware\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eArduino C\/C++\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eMicroPython\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eLibrary Compatibility\u003c\/td\u003e\n\u003ctd\u003eExtensive, mature\u003c\/td\u003e\n\u003ctd\u003eGrowing\u003c\/td\u003e\n\u003ctd\u003eGrowing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest Uses\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEducational\/Basic Projects\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003ctd\u003eGood\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eComplex Computing Needs\u003c\/td\u003e\n\u003ctd\u003eLimited\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWireless\/IoT Projects\u003c\/td\u003e\n\u003ctd\u003eRequires shields\u003c\/td\u003e\n\u003ctd\u003eRequires shields\u003c\/td\u003e\n\u003ctd\u003eBuilt-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eVisual Output Projects\u003c\/td\u003e\n\u003ctd\u003eRequires components\u003c\/td\u003e\n\u003ctd\u003eRequires components\u003c\/td\u003e\n\u003ctd\u003eBuilt-in LED matrix\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eLegacy Project Compatibility\u003c\/td\u003e\n\u003ctd\u003eExcellent\u003c\/td\u003e\n\u003ctd\u003eGood (some adaptation)\u003c\/td\u003e\n\u003ctd\u003eGood (some adaptation)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice Point\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRelative Cost\u003c\/td\u003e\n\u003ctd\u003eLowest\u003c\/td\u003e\n\u003ctd\u003eMedium\u003c\/td\u003e\n\u003ctd\u003eHighest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch2 class=\"wp-block-heading\"\u003eConclusion\u003c\/h2\u003e\n\u003cp\u003eThis comprehensive comparison illustrates the significant advancements the Uno R4 series brings to the Arduino ecosystem. The R4 models feature dramatically improved processing power, memory resources, and peripheral capabilities while maintaining compatibility with the classic Uno form factor.\u003c\/p\u003e\n\u003cp\u003eThe R3 continues to excel in educational settings and basic projects with its mature ecosystem and wide compatibility. The R4 Minima offers a substantial performance upgrade for more demanding applications, while the R4 WiFi adds built-in wireless connectivity and visual feedback capabilities that would require additional components on other boards.\u003c\/p\u003e\n\u003cp\u003eFor makers looking to advance beyond the limitations of the R3, the R4 series provides a natural progression path without requiring users to learn an entirely new platform, making it an excellent choice for both new and experienced enthusiasts.\u003c\/p\u003e\n\u003ch2 class=\"wp-block-heading\"\u003eAre Arduino Uno R4 shields compatible with the Uno R3?\u003c\/h2\u003e\n\u003cp\u003eYes, Arduino deliberately engineered the Uno R4 series (both Minima and WiFi versions) to maintain backward compatibility with the extensive ecosystem of shields created for the Uno R3. The R4 boards preserve the identical pin layout, form factor, and electrical specifications that shield designers have relied on for years. This means that virtually all existing Uno R3 shields can be attached directly to an R4 board without modification.\u003c\/p\u003e","brand":"The Electronics Hub","offers":[{"title":"Default Title","offer_id":56050504761669,"sku":"34-117","price":14.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/6161\/9781\/files\/Compatible-R4-Arduino-UNO-WIFI-01.webp?v=1761310235","url":"https:\/\/www.tehonline.co.uk\/products\/arduino-uno-r4-compatible-board-wifi-clone-development-kit","provider":"The Electronics Hub","version":"1.0","type":"link"}