{"product_id":"official-arduino-uno-ek-r4-wifi-made-in-india","title":"Arduino UNO EK R4 WiFi","description":"\u003ch2 style=\"font-size: 1.4em; font-weight: bold; margin: 0 0 12px; line-height: 1.4;\"\u003eArduino UNO R4 WiFi EK (एक) — Renesas RA4M1 48 MHz Arm Cortex-M4 — ESP32-S3 Wi-Fi 4 \u0026amp; Bluetooth 5 — 12×8 LED Matrix | Made in India\u003c\/h2\u003e\n\u003cp style=\"margin: 0 0 20px; line-height: 1.7; color: #e0e0e0;\"\u003eThe \u003cstrong\u003eOfficial Arduino UNO R4 WiFi EK (एक)\u003c\/strong\u003e is the Made-in-India evolution of the iconic UNO series — powered by a Renesas RA4M1 32-bit Arm Cortex-M4 running at 48 MHz with a hardware FPU, 256 KB Flash, and seamless wireless connectivity through an onboard ESP32-S3 delivering \u003cstrong\u003eWi-Fi 4 (802.11 b\/g\/n) and Bluetooth 5\u003c\/strong\u003e. It preserves full compatibility with all existing Arduino Uno shields while adding a 12×8 LED matrix, 14-bit ADC, 12-bit DAC, Qwiic connector, CAN bus, and native Arduino IoT Cloud support — certified, fully official, and manufactured in India.\u003c\/p\u003e\n\u003cp\u003e\u003cimg width=\"368\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0618\/9042\/9095\/files\/pin_description.png?v=1752480003\" alt=\"Arduino UNO R4 WiFi EK (एक) pin description and pinout diagram\" style=\"max-width: 100%; height: 368px; display: block; margin-bottom: 16px; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.15em; font-weight: bold; margin: 24px 0 10px; color: #e0e0e0;\"\u003eKey Highlights\u003c\/h3\u003e\n\u003cul style=\"margin: 0 0 20px; padding-left: 22px; line-height: 1.6; list-style-position: outside; color: #e0e0e0;\"\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eMade in India — Fully Certified\u003c\/strong\u003e — Official Arduino UNO R4 WiFi manufactured domestically under Arduino's certification programme, giving Indian makers and educators a locally sourced board with global-standard quality.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eRenesas RA4M1 @ 48 MHz with FPU\u003c\/strong\u003e — A 32-bit Arm Cortex-M4 with hardware floating-point handles complex maths, signal processing, and PID control at roughly 3× the speed of the classic 8-bit UNO R3.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eWi-Fi 4 + Bluetooth 5 via ESP32-S3\u003c\/strong\u003e — The onboard ESP32-S3-MINI-1-N8 delivers 802.11 b\/g\/n at up to 150 Mbps on 2.4 GHz and Bluetooth 5, all without an external antenna or module.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003e12×8 LED Matrix — 96 Individually Addressable Points\u003c\/strong\u003e — A Charlieplexed red LED grid lets you display animations, scrolling text, sensor readings, and game graphics directly from your sketch with no extra hardware.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003e14-bit ADC + 12-bit DAC\u003c\/strong\u003e — Higher-resolution analog I\/O enables precise sensor measurements and true analog waveform generation for audio, instrumentation, and closed-loop control projects.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eQwiic \/ STEMMA QT Connector\u003c\/strong\u003e — The onboard Qwiic port lets you daisy-chain I2C sensors and displays with a snap-in cable, eliminating soldering entirely for rapid prototyping.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eCAN Bus Controller Onboard\u003c\/strong\u003e — Integrated CAN bus on D4\/D5 enables vehicle and industrial communication protocols without an additional microcontroller — just add an external transceiver.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eArduino IoT Cloud Ready\u003c\/strong\u003e — Connect, monitor, and automate devices remotely through the Arduino IoT Cloud platform with just a few lines of generated code and no extra hardware.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eWide 6–24 V Input + USB-C\u003c\/strong\u003e — Power from any 6–24 V DC supply via the barrel jack, or directly from USB-C at 5 V — ideal for both bench work and field deployment.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eFull Arduino Uno Shield Compatibility\u003c\/strong\u003e — Identical form factor and 5 V pinout as the UNO R3 means every motor driver, relay, display, and sensor shield you already own works without modification.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-size: 1.15em; font-weight: bold; margin: 24px 0 10px; color: #e0e0e0;\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"width: 100%; overflow-x: auto; margin: 0 0 24px;\"\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; min-width: 460px; border: 0;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 2px solid #3a3a3a; font-weight: bold; color: #baff02;\"\u003eSpecification\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 2px solid #3a3a3a; font-weight: bold; color: #baff02;\"\u003eDetails\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eMicrocontroller\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eRenesas R7FA4M1AB3CFM (RA4M1) — 32-bit Arm Cortex-M4 @ 48 MHz with FPU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eWireless Module\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eESP32-S3-MINI-1-N8 — Wi-Fi 4 (802.11 b\/g\/n, 2.4 GHz, up to 150 Mbps) + Bluetooth 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eFlash Memory\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e256 KB (RA4M1) + 8 MB (ESP32-S3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eSRAM\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e32 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eEEPROM (Data Flash)\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e8 KB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e5 V (RA4M1 logic) \/ 3.3 V (ESP32-S3 internal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eInput Voltage\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e6–24 V (barrel jack) \/ 5 V (USB-C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eDigital I\/O Pins\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e14 (D0–D13), 6 with PWM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eAnalog Input Pins\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e6 (A0–A5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eADC\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e14-bit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eDAC\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e12-bit (A0)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eCommunication\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e1× UART (D0\/D1), 1× SPI (D10–D13 + ICSP), 1× I2C (A4\/A5 + SDA\/SCL), 1× CAN (D4\/D5)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eQwiic Connector\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e1× (I2C, 3.3 V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eOther Peripherals\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eRTC, OP AMP, MPU, CTSU (capacitive touch sensing), USB 2.0 Full-Speed (USBFS), VRTC, OFF pin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eOnboard Hardware\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003e12×8 LED matrix (Charlieplexed, 96 individually addressable points)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eUSB\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eUSB-C (programming + power)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eCloud Support\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eArduino IoT Cloud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eShield Compatibility\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border-bottom: 1px solid #3a3a3a; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eAll existing Arduino Uno shields\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding: 10px 12px; border: 0; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd style=\"padding: 10px 12px; border: 0; font-weight: 600; word-wrap: break-word; color: #e0e0e0;\"\u003eMade in India (ABX00087_IN)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size: 1.15em; font-weight: bold; margin: 24px 0 10px; color: #e0e0e0;\"\u003eCommon Applications \u0026amp; Use Cases\u003c\/h3\u003e\n\u003cul style=\"margin: 0 0 20px; padding-left: 22px; line-height: 1.6; list-style-position: outside; color: #e0e0e0;\"\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eIoT Sensor Nodes\u003c\/strong\u003e — Onboard Wi-Fi 4 and Arduino IoT Cloud integration let you deploy standalone sensor nodes reporting temperature, humidity, air quality, or motion to a cloud dashboard with no gateway hardware required.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eHome Automation Controllers\u003c\/strong\u003e — Control relays, dimmers, and smart switches over Wi-Fi or Bluetooth directly from the board, integrating with voice assistants and smartphone apps through the Arduino IoT Cloud.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eLED Matrix Displays \u0026amp; Animations\u003c\/strong\u003e — Program scrolling text, icons, and game graphics on the 12×8 LED matrix using the built-in library, or create real-time visualisations of sensor data without any external display hardware.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003ePrecision Analog Instrumentation\u003c\/strong\u003e — The 14-bit ADC provides 16× finer resolution than the classic 10-bit UNO, enabling accurate measurement of low-level signals from load cells, thermocouples, pH probes, and pressure transducers.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eIndustrial CAN Bus Prototyping\u003c\/strong\u003e — The integrated CAN controller makes it straightforward to prototype automotive sensor networks, industrial fieldbuses, and equipment diagnostics — add a CAN transceiver and you're on the bus.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eBluetooth Data Logging\u003c\/strong\u003e — Stream sensor readings wirelessly to a smartphone or tablet over Bluetooth 5 for cord-free bench measurements, patient monitoring demos, or mobile data collection in the field.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eCapacitive Touch Interfaces\u003c\/strong\u003e — The RA4M1's CTSU peripheral enables touch-sensitive pads without dedicated touch ICs, making it possible to build sleek capacitive user interfaces directly into enclosures and panels.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eAudio \u0026amp; Waveform Generation\u003c\/strong\u003e — The 12-bit DAC outputs smooth analog waveforms — sine, sawtooth, PWM audio — for tone generation, audio feedback circuits, and signal injection in test equipment designs.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eSTEM Education \u0026amp; University Labs\u003c\/strong\u003e — Familiar Arduino syntax, rich peripheral set, and the 12×8 LED matrix make this an ideal teaching board for electronics, embedded systems, and IoT coursework at school and university level.\u003c\/li\u003e\n\u003cli style=\"margin-bottom: 14px; padding-left: 0; line-height: 1.6;\"\u003e\n\u003cstrong\u003eRapid Prototyping with Qwiic Sensors\u003c\/strong\u003e — The Qwiic connector enables snap-in attachment of I2C sensors, OLED displays, and GPS modules from SparkFun and Adafruit ecosystems, cutting wiring time to near zero during early prototyping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-size: 1.15em; font-weight: bold; margin: 24px 0 10px; color: #e0e0e0;\"\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul style=\"margin: 0 0 12px; padding-left: 22px; line-height: 1.8; color: #e0e0e0;\"\u003e\n\u003cli\u003eOfficial Arduino UNO R4 WiFi EK (एक) — Made in India × 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 13px; margin: 0 0 20px; line-height: 1.6; color: #a0a0a0;\"\u003e\u003cem\u003eNote: accessories such as USB-C cables, power supplies, CAN transceivers, cases, and SD card modules are sold separately and not included unless stated above.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-size: 1.15em; font-weight: bold; margin: 24px 0 16px; color: #e0e0e0;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eIs the Arduino UNO R4 WiFi EK compatible with all existing Arduino Uno shields?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eYes — the UNO R4 WiFi EK uses the \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003esame form factor, pin layout, and 5 V operating voltage\u003c\/span\u003e as the classic UNO R3, so every existing Uno shield plugs in without modification. Motor driver shields, relay boards, display shields, and sensor shields all work as expected. The RA4M1 runs on 5 V logic, matching the legacy shield standard. A small number of 3.3 V-only shields may require a logic level adapter on signal lines. Overall, the transition from R3 to R4 WiFi EK is seamless for the vast majority of existing projects.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eWhat power supply does the Arduino UNO R4 WiFi EK require?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eThe board accepts three power inputs: a \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eUSB-C cable at 5 V\u003c\/span\u003e, a standard \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e5.5 mm × 2.1 mm barrel jack accepting 6–24 V DC\u003c\/span\u003e, or through the Vin header pin at 6–24 V. The onboard regulator steps the barrel jack input down to 5 V for the RA4M1 and 3.3 V for the ESP32-S3 module. For desktop programming and simple projects, a USB-C cable from your PC is sufficient. For field or high-current deployments, a 9 V or 12 V DC adapter via the barrel jack is the most practical option. Note that the USB-C cable is not included in the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eWhich IDE and software versions support the Arduino UNO R4 WiFi EK?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eThe board is fully supported by \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eArduino IDE 2.x\u003c\/span\u003e and the Arduino CLI. Install the UNO R4 board package (version 1.0.0 or later) via the Arduino Board Manager by searching for \"Arduino UNO R4.\" The board also works with \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003ePlatformIO\u003c\/span\u003e and other IDEs that support the Arduino framework. ESP32-S3 wireless firmware can be updated over-the-air via the Arduino IDE's built-in OTA tooling. Because the EK (ABX00087_IN) is functionally identical to the global ABX00087, all board packages, libraries, and firmware releases apply without any modification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eHow much memory does the Arduino UNO R4 WiFi EK have, and can it be expanded?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eThe RA4M1 MCU provides \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e256 KB Flash\u003c\/span\u003e for program storage, \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e32 KB SRAM\u003c\/span\u003e for runtime variables, and \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e8 KB Data Flash (EEPROM)\u003c\/span\u003e for non-volatile settings. The ESP32-S3-MINI-1-N8 module adds 8 MB of dedicated SPI Flash used for Wi-Fi firmware and OTA payloads. There is no onboard SD card slot; for large data logging you will need an external SD card shield or module connected via SPI. The Data Flash supports at least 100,000 erase\/write cycles, making it reliable for storing calibration data and project configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eWhat accessories do I need to get started with the Arduino UNO R4 WiFi EK?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eAt minimum you need a \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eUSB-C data cable\u003c\/span\u003e (not included) to connect the board to your computer for programming. Download the free \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eArduino IDE 2.x\u003c\/span\u003e, install the UNO R4 board package, and you can run basic sketches with no additional hardware. The built-in Wi-Fi, Bluetooth, and 12×8 LED matrix all work out of the box. For CAN bus projects, an external \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eCAN transceiver module\u003c\/span\u003e (e.g. MCP2551 or TJA1050) is required since the board provides only the CAN controller logic. Qwiic-compatible sensors and displays attach via the Qwiic connector with a snap-in cable and no soldering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eHow does the Arduino UNO R4 WiFi EK compare to the original Arduino UNO R3?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eThe UNO R4 WiFi EK is a substantial upgrade in every dimension. The processor jumps from an \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e8-bit ATmega328P at 16 MHz\u003c\/span\u003e to a \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e32-bit Arm Cortex-M4 at 48 MHz with hardware FPU\u003c\/span\u003e, making it roughly 3× faster and capable of DSP and complex maths that would stall the R3. ADC resolution improves from 10-bit to 14-bit, and a 12-bit DAC is added where the R3 had none. Wi-Fi 4, Bluetooth 5, a 12×8 LED matrix, CAN bus, RTC, OP AMP, and a Qwiic connector are all new additions. The 5 V form factor, pinout, and Arduino IDE workflow remain identical, so existing projects migrate with minimal code changes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eHow many GPIO pins and communication interfaces are available on the Arduino UNO R4 WiFi EK?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eThe board exposes \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e14 digital I\/O pins\u003c\/span\u003e (D0–D13, with 6 supporting PWM) and \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e6 analog input pins\u003c\/span\u003e (A0–A5) that also function as digital I\/O. Communication interfaces include 1× UART on D0\/D1, 1× SPI on D10–D13 plus the ICSP header, 1× I2C on A4\/A5 and the dedicated SDA\/SCL pins, and \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003e1× CAN bus on D4\/D5\u003c\/span\u003e. A Qwiic \/ STEMMA QT port provides a direct I2C connection at 3.3 V. Additional RA4M1 peripherals include CTSU capacitive touch sensing, an OP AMP, USB 2.0 Full-Speed device port, VRTC power pin, and a software-controlled OFF pin for power management.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eIs the Arduino UNO R4 WiFi EK suitable for beginners, or is it aimed at advanced users?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eThe UNO R4 WiFi EK is designed for the full spectrum. \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eBeginners\u003c\/span\u003e can start with LED blink, sensor reads, and serial monitor exercises using familiar Arduino C++ syntax — the board package includes ready-to-use libraries for the LED matrix, Wi-Fi, Bluetooth, RTC, and IoT Cloud. \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eAdvanced users\u003c\/span\u003e can leverage the 14-bit ADC, 12-bit DAC, CAN bus, capacitive touch, OP AMP, and the full ESP32-S3 wireless stack for professional-grade designs. STEM educators and university labs find it particularly effective for introducing 32-bit MCU programming without abandoning the Arduino ecosystem their students already know.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 12px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eWhat is the most common mistake users make when setting up the Arduino UNO R4 WiFi EK?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eThe most common mistake is attempting \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eCAN bus communication without an external transceiver\u003c\/span\u003e. The RA4M1 includes only a CAN controller — you must add an external IC such as the \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eMCP2551, TJA1050, or SN65HVD230\u003c\/span\u003e between D4\/D5 and the physical bus to drive the differential CANH\/CANL lines. A second common issue is using a charge-only USB-C cable, which powers the board but does not establish a programming connection — always use a full data-capable USB-C cable. Additionally, the ESP32-S3 module runs at 3.3 V internally; do not connect its pads directly to 5 V signals without a level shifter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #1a1a1a; border-left: 3px solid #BAFF02; border-radius: 4px; padding: 18px 20px; margin: 0 0 4px;\"\u003e\n\u003cp style=\"font-weight: bold; color: #baff02; margin: 0 0 10px; line-height: 1.5; font-size: 0.97em;\"\u003eWhere can I find documentation and community support for the Arduino UNO R4 WiFi EK?\u003c\/p\u003e\n\u003cp style=\"margin: 0; line-height: 1.75; font-size: 0.94em; color: #e0e0e0;\"\u003eFull documentation is available at \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003edocs.arduino.cc\u003c\/span\u003e under the UNO R4 WiFi product page, including a cheat sheet, pinout diagram, and tutorials covering the LED matrix, Wi-Fi, Bluetooth, RTC, and IoT Cloud integration. The \u003cspan style=\"color: #baff02; font-weight: 600;\"\u003eArduino Forum\u003c\/span\u003e and Arduino Discord server are active communities for troubleshooting and project sharing. Because the EK (ABX00087_IN) is functionally identical to the global ABX00087, every tutorial and firmware release applies without modification. A product-specific datasheet and schematic are linked in the Resources section of this product page for hardware reference.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Arduino","offers":[{"title":"Default Title","offer_id":43062176317545,"sku":"ARD-011","price":1968.82,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0672\/4229\/5401\/files\/Arduino_UNO_1_7972a890-88f4-4c68-a9ac-a23ebc72c801.webp?v=1774518852","url":"https:\/\/edgetechrobotics.com\/products\/official-arduino-uno-ek-r4-wifi-made-in-india","provider":"EdgeTech Robotics","version":"1.0","type":"link"}