{"title":"D1 Format Boards","description":"","products":[{"product_id":"uno-arduino-compatible-development-board","title":"UNO R3 Compatible Development Board Microcontroller","description":"\u003ch2\u003e\n\u003cstrong\u003eUNO Arduino Compatible Board Key Features\u003c\/strong\u003e:\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic I\/O Options\u003c\/strong\u003e: Comes with a whopping 54 digital input\/output pins, out of which 14 can be designated as PWM outputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple UARTs\u003c\/strong\u003e: Equipped with 4 UARTs, simplifying your device-to-device communications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug \u0026amp; Play\u003c\/strong\u003e: Integrated USB connection for straightforward computer interfacing, alongside a power jack and reset button for smooth operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgraded Chipset\u003c\/strong\u003e: Features the CH340G, replacing the older ATmega 8U2\/16U2 for enhanced performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cstrong\u003eSpecifications of UNO Arduino\u003c\/strong\u003e:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrocontroller Core\u003c\/strong\u003e: ATmega2560\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClock Pulse\u003c\/strong\u003e: Consistent 16 MHz crystal oscillator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMemory\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003eEEPROM: 4 KB\u003c\/li\u003e\n\u003cli\u003eSRAM: 8 KB\u003c\/li\u003e\n\u003cli\u003eFlash Memory: 256 KB (Note: 8 KB used by the bootloader)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e: Steady 5V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage (Advised)\u003c\/strong\u003e: A range between 7-12V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiverse Pin Set-Up\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003eAnalogue Input Pins: 16\u003c\/li\u003e\n\u003cli\u003eDigital I\/O Pins: 54 (14 of these can output PWM signals)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Specifications\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003eDC Current for 3.3V Pin: 50 mA\u003c\/li\u003e\n\u003cli\u003eDC Current for each I\/O Pin: 40 mA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoard Dimensions\u003c\/strong\u003e: Compact at 100 x 55 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWhy Choose the UNO Arduino Development Board?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eWhether you’re crafting a sophisticated automation project or diving into the Arduino ecosystem for the first time, this board is tailored to meet diverse needs. Reliable, versatile, and packed with features, it’s your passport to the future of electronics.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCustomer Notice; USB-A to USB-B power cable sold separately.\u003c\/strong\u003e\u003c\/p\u003e","brand":"The Electronics Hub","offers":[{"title":"Default Title","offer_id":50178541912389,"sku":"34-011","price":5.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/6161\/9781\/files\/arduino-r3-rev3-uno-development-board-microcontroller.webp?v=1776353453"},{"product_id":"wemos-d1-esp32-based-wifi-bluetooth-board","title":"Wemos D1 ESP32 Based WiFi Bluetooth Development Board Microcontroller","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNO Form Factor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEasily integrate with existing Arduino Shields, ensuring compatibility and versatility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Core Processor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures the Xtensa® 32-bit LX6, capable of up to 600 DMIPS.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbundant Memory:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eComes with 4MB SPI Flash, 448KB ROM, and 520KB SRAM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMeasures just 68 x 53 x 3mm, ensuring a snug fit in most setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Range:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eOperates efficiently between DC 5V to 12V.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAdvanced Features of Wemos D1 ESP32:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Solutions:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eESP32 offers the most comprehensive solution for Wi-Fi + Bluetooth applications, requiring fewer than 10 external components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-in-One Chip:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eESP32 combines antenna switch, RF balun, power amplifier, low noise receive amplifier, filters, and power management modules, minimizing PCB area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Development:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCompatible with various platforms, including Arduino, making it ideal for IoT sensor hubs, video streaming, home automation, and more.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Note:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEnsure you use the board ONLY with 3.3V compatible shields and modules. 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This powerful combination makes the RP-Duino an ideal choice for makers and engineers looking to create a wide range of projects.\u003c\/p\u003e\n\u003cp\u003eOne of the key advantages of the RP-Duino is its 5V tolerance on all I\/O pins. Unlike other RP2040 boards on the market, the RP-Duino's compatibility with 5V signals makes it an excellent choice for those who want to utilize their existing shields and hardware. This means that makers can easily migrate their projects from other Uno-compatible boards to the RP-Duino without having to worry about compatibility issues.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003eWhy is the RP-Duino an excellent board to use?\u003c\/h2\u003e\n\u003cp\u003eThe RP-Duino is an exceptional choice for engineers due to the capabilities of the RP2040 microcontroller. \u003cstrong\u003eDeveloped by Raspberry Pi\u003c\/strong\u003e, the RP2040 features a dual-core ARM Cortex-M0+ processor running at up to 133 MHz, 264KB of SRAM, and support for external flash memory. This allows the RP-Duino to handle complex computations, multitasking, and advanced I\/O operations with ease.\u003c\/p\u003e\n\u003cp\u003eThe RP-Duino also features a USB C connector, which is widely regarded as the most superior cable in history. This connector offers fast data transfer rates, high power delivery, and a compact design, making it ideal for a wide range of applications. The use of USB C in the RP-Duino simplifies connectivity and provides a reliable interface for data exchange. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv id=\"specs\" class=\"basic-block\"\u003e\n\u003ch2\u003eRP-Duino Specifications\u003c\/h2\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"parsedown\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMicrocontroller:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eRP2040 (Dual-core ARM Cortex-M0+ processor)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGPIO:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e19 x GPIO (5V tolerant)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e4 x Analog Inputs (5V tolerant)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMax output source current: 0.5mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMax output sink current: 100mA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUser Interface:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e2 x GPIO Buttons (independent from GPIO headers)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e4 x GPIO LEDs (independent from GPIO headers)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e2 x Program Switches (RESET and FIRMWARE)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConnectivity \u0026amp; Power:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eUSB-C Port (for connectivity and power)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e12V DC Barrel Jack (for additional power input)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStorage:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e4MB Flash Memory\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eArduino Uno Form Factor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e68.6mm x 53.4mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"5v\" class=\"basic-block\"\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003eWhy is 5V tolerance so important?\u003c\/h2\u003e\n\u003cp\u003eThe need for 5V tolerance in modern electronics is becoming increasingly crucial, yet it is often overlooked in the design of many microcontrollers. Most contemporary microcontrollers, including the Raspberry Pi Pico, are designed to operate on 3.3V logic levels, which suit the majority of current sensors and modules that also use this voltage. However, there are numerous hardware platforms, shields, and add-ons specifically designed to operate on 5V, which are not compatible with 3.3V microcontrollers.\u003c\/p\u003e\n\u003cp\u003eAlthough level shifter shields do exist, their use can add more complexity to a circuit design, causing it to be physically larger and harder to manufacture. Furthermore, the use of level shifter shields can introduce extra costs to a project, increasing production expenses. As a result, many makers are forced to discard their existing hardware in favour of newer 3.3V systems, which can be extremely wasteful and costly.\u003c\/p\u003e\n\u003cp\u003eFor those who have invested heavily in 5V sensors, modules, and add-ons, the Raspberry Pi Pico is an extremely attractive platform that offers extensive flexibility and customization. However, the limitation of operating on 3.3V means it cannot interface with existing 5V hardware, posing a substantial limitation for makers looking to utilize their existing hardware.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"how\" class=\"basic-block\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv id=\"how\" class=\"basic-block\"\u003e\n\u003ch2\u003eHow is the RP-Duino 5V tolerant?\u003c\/h2\u003e\n\u003cp\u003eTo achieve the RP-Duino’s 5V tolerance, a number of different circuits have been used to convert between the 3.3V and 5V levels. For digital pins, a BSS138 level shifter circuit has been used, which converts 3.3V to 5V in both directions. This allows the RP-Duino to communicate with both 3.3V and 5V digital devices, making it an ideal choice for projects that require both low voltage and high voltage components.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.mitchelectronics.co.uk\/images\/schematics\/5vlevel.jpeg\" class=\"image-half-width\"\u003e\u003c\/p\u003e\n\u003cp\u003eFor analog pins, a combination of a BSS138 level shifter in conjunction with an analog potential divider with analog switches has been used. This allows the RP-Duino to operate with both 3.3V and 5V analog devices, making it an ideal choice for projects that require both low voltage and high voltage components. What makes this board particularly impressive is that the analog pins can be enabled and disabled, allowing them to work as both digital IO and analog input pins.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/www.mitchelectronics.co.uk\/images\/schematics\/analog5v.jpeg\" class=\"image-half-width\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe RP-Duino has also been designed to work with open-collector circuits, including I2C. Because each level shifter circuit has a pull up transistor, the RP-Duino naturally works with open-collector circuits. The RP-Duino has been tested with both SPI and I2C circuits and works exceeding well. The use of level shifters also allows the RP-Duino to work with devices that have different voltage levels, such as sensors and actuators.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"board\" class=\"basic-block\"\u003e\n\u003ch2\u003eBoard \/ GPIO Specs\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"basic-block\"\u003e\u003cimg src=\"https:\/\/www.mitchelectronics.co.uk\/images\/RPDuino.svg\" class=\"image-full-width\"\u003e\u003c\/div\u003e\n\u003cdiv id=\"analog\" class=\"basic-block\"\u003e\n\u003ch2\u003e\u003cbr\u003e\u003c\/h2\u003e\n\u003ch2\u003eUsing Analog Pins\u003c\/h2\u003e\n\u003cp\u003eBecause this board needs to be super compatible with as many pre-existing shields as possible, the analog IO had to be designed to allow for both digital and analog operation without affecting each others performance. So, we decided to create two separate signal paths that current can take, an analog path, and a digital path.\u003c\/p\u003e\n\u003cp\u003eIn order to use the analog input pins, the respective analog pin must have its enable signal driven low. For example, if A0 is to be used as an analog input, the GPIO 22 (Analog A0 Enable) must be driven as an output and set to 0. If A0 needs to be used as a digital IO pin, GPIO 22 must be set to 1.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"limits\" class=\"basic-block\"\u003e\n\u003ch2\u003eWhat limitations does the RP-Duino have?\u003c\/h2\u003e\n\u003cp\u003eOne of the primary limitations of the RP-Duino is the use of level shifters, which introduce some design challenges. The integration of resistors into the level shifter design restricts the creation of open-drain circuits without a pull-up resistor.\u003c\/p\u003e\n\u003cp\u003eThis limitation can be particularly problematic in scenarios where a high-impedance load is connected to the output of the level shifter, as it may interfere with the normal operation of the circuit. Additionally, the size of the pull-up resistors used in the level shifter design greatly impacts the maximum speed of operation. Smaller resistors can enhance the speed of the circuit, but they also increase the current drawn, which may lead to overheating and other issues. Therefore, a balance must be struck between speed and current consumption when designing circuits with level shifters.\u003c\/p\u003e\n\u003cp\u003eAnother challenge posed by the RP-Duino's design is the analog input configuration. The analog input is not fully divided to the 0V to 3.3V range, which means that some scaling adjustments may be necessary in the code. This is particularly relevant when working with sensors that have a voltage range that exceeds the capabilities of the analog input. In such cases, the code must be modified to accommodate the sensor's voltage range, ensuring accurate and reliable readings. While this may require some additional coding effort, it is a crucial step in ensuring the accuracy and reliability of the final output.\u003c\/p\u003e\n\u003cp\u003eOverall, while the RP-Duino offers a convenient and cost-effective solution for microcontroller development, its limitations must be carefully considered. By understanding the challenges associated with level shifters and analog input configurations, designers can create effective and reliable circuits that meet their specific needs. With careful planning and design, the RP-Duino can be a valuable tool in a wide range of microcontroller projects, from simple prototypes to complex systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eCustomer Notice; USB-C power cable sold separately.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFind out more about RP2040 development boards \u003ca rel=\"noopener\" title=\"here...\" href=\"https:\/\/www.tehonline.co.uk\/blogs\/electronics-know-how\/why-choose-the-rp2040\" target=\"_blank\"\u003e\u003cstrong\u003ehere...\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"The Electronics Hub","offers":[{"title":"Default Title","offer_id":54024326152517,"sku":"33-045","price":24.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/6161\/9781\/files\/mitchelectronics-rp2040-rpduino-development-board-5v-tolerant.jpg?v=1754157018"},{"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"},{"product_id":"arduino-uno-r4-compatible-board-minima-clone-development-kit","title":"UNO R4 Rev4 Minima 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\u003eCompatible with UNO R4 Minima – High-Performance Microcontroller for Advanced Projects\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe UNO R4 Minima is a powerful development board featuring the Renesas RA4M1 microcontroller with a 32-bit ARM Cortex-M4 core running at 48 MHz. Designed for embedded applications, it offers enhanced processing power, expanded memory, and a variety of onboard peripherals—all while maintaining the classic UNO form factor for seamless compatibility with existing shields and accessories.\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\u003eOptimized Performance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe 32-bit ARM Cortex-M4 core ensures efficient processing and low power consumption, ideal for demanding applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Connectivity:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eFeatures a modern USB-C port for power and programming, along with CAN BUS support for robust communication in industrial and automotive applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Analog Capabilities:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eEquipped with a 12-bit DAC and operational amplifier for precise analog signal processing, making it perfect for audio, sensor integration, and signal generation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Debugging:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes an SWD (Serial Wire Debug) connector for professional-grade debugging, programming, and real-time system monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpanded Power Support:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSupports input voltages up to 24V, enabling easy integration with motors, LED strips, and actuators without additional power management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHID Functionality:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCan function as a keyboard or mouse when connected to a computer, enabling seamless interaction with software applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFamiliar UNO Form Factor:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMaintains the pinout, 5V operating voltage, and overall design of the UNO R3, ensuring compatibility with a vast ecosystem of shields and accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIdeal for IoT, robotics, industrial control, and embedded systems, the UNO R4 Minima provides a powerful yet compact platform for innovation.\u003c\/p\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":56050538742085,"sku":"34-116","price":9.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/6161\/9781\/files\/Compatible-R4-Arduino-UNO-Minima_064b51d7-173a-41d9-9180-b55c458db0f1.webp?v=1761310958"},{"product_id":"arduino®-uno-r4-minima","title":"Arduino® UNO R4 Minima","description":"The Arduino UNO R4 Minima brings a powerful upgrade to the UNO series with a 32-bit microcontroller from Renesas, offering increased processing power, memory, and new on-board peripherals. Maintaining the same form factor, pinout, and 5V operating voltage as the UNO R3, it's fully compatible with existing Arduino shields and accessories.\u003cbr\u003e\u003cbr\u003eThe UNO R4 Minima offers enhanced performance with expanded memory and faster clock speeds, supporting more complex calculations and projects. It includes a 12-bit DAC, CAN BUS, and OP AMP, adding flexibility for various applications. The board also supports input voltages up to 24V, allowing integration with motors, LED strips, and other higher-power components.\u003cbr\u003e\u003cbr\u003eDebugging capabilities are improved with an SWD connector for external debugging, while HID support allows it to emulate a keyboard or mouse when connected to a computer via USB, expanding its functionality in interactive applications.\u003cbr\u003e\u003cbr\u003eFor wireless capabilities, the UNO R4 WiFi variant is also available. The UNO R4 Minima combines advanced features with classic Arduino compatibility, making it a versatile choice for a wide range of projects.\u003cbr\u003e\u003cbr\u003e\u003cli\u003eHigh performance\u003c\/li\u003e\u003cli\u003eArduino compatibility\u003c\/li\u003e\u003cli\u003eEasy to use\u003c\/li\u003e\u003cli\u003eReliable connection\u003c\/li\u003e\u003cli\u003eWide application range\u003c\/li\u003e","brand":"Switch Electronics | Your One Stop Component Shop","offers":[{"title":"Default Title","offer_id":58361962201413,"sku":"490761","price":21.98,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/6161\/9781\/files\/0dfdc6a7-dcc7-4f44-b863-77f25c051acc.jpg?v=1782294480"},{"product_id":"arduino®-uno-r4-wifi","title":"Arduino® UNO R4 WiFi","description":"The Arduino UNO R4 WiFi blends the power of Renesas's RA4M1 microcontroller with the wireless capabilities of Espressif's ESP32-S3. It includes features like a 12x8 LED matrix, Qwiic connector, VRTC, and OFF pin, supporting a wide array of project needs. This board provides a seamless upgrade path from the UNO R3, maintaining the same form factor, pinout, and 5V compatibility, so existing shields and projects are fully compatible. With increased memory and a faster clock, the UNO R4 WiFi manages complex tasks effortlessly and enhances performance for intricate projects.\u003cbr\u003e\u003cbr\u003eIt also introduces new peripherals, including a 12-bit DAC, CAN BUS, and OP AMP, expanding design options. With 24V input tolerance, the board powers motors, LEDs, and other devices from a single source. HID support allows the UNO R4 WiFi to simulate a keyboard or mouse when connected to a computer, and the ESP32-S3 enables Wi-Fi and Bluetooth connectivity, offering remote control via Arduino IoT Cloud.\u003cbr\u003e\u003cbr\u003eAdditional features include a Qwiic I2C connector, support for a battery-powered Real-Time Clock, a bright LED matrix for animations or data visualization, and built-in error diagnostics. With these enhanced capabilities in the familiar UNO format, it's a versatile choice for both new and upgraded projects\u003cbr\u003e\u003cbr\u003e\u003cli\u003eHigh performance\u003c\/li\u003e\u003cli\u003eArduino compatibility\u003c\/li\u003e\u003cli\u003eEasy to use\u003c\/li\u003e\u003cli\u003eReliable connection\u003c\/li\u003e\u003cli\u003eWide application range\u003c\/li\u003e","brand":"Switch Electronics | Your One Stop Component Shop","offers":[{"title":"Default Title","offer_id":58361962299717,"sku":"490763","price":29.92,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/6161\/9781\/files\/arduino-uno-r4-wifi.webp?v=1782498151"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0803\/6161\/9781\/collections\/da67acc0-8a1a-473f-8cd9-3a4fc377c9f3.jpg?v=1782297472","url":"https:\/\/www.tehonline.co.uk\/collections\/d1-format-boards.oembed","provider":"The Electronics Hub","version":"1.0","type":"link"}