Arduino® UNO R4 WiFi Original

32-Bit RA4M1 Arm Cortex-M4 Microcontroller: Powered by Renesas RA4M1 running at 48MHz with 32KB SRAM and 256KB Flash memory, delivering a massive performance upgrade over classic 8-bit UNO boards.

Onboard ESP32-S3 Wi-Fi & Bluetooth Module: Features an integrated ESP32-S3 module for seamless Wi-Fi (802.11 b/g/n) and Bluetooth 5.0 (BLE) connectivity, full Arduino Cloud integration, and OTA (over-the-air) firmware updates.

Built-in 12 x 8 Red LED Matrix: Includes an onboard 12 x 8 matrix (96 individual red LEDs) for displaying custom animations, dynamic sensor status, mini-games, and scrolling diagnostic text out of the box.

Modern USB Type-C & 24V Input Support: Upgraded with a durable USB-C programming interface and an expanded input voltage range supporting up to 24V DC power through the barrel jack.

Native CAN Bus & Qwiic I2C Connector: Features native CAN bus support alongside a Qwiic I2C connector, allowing effortless daisy-chain connection to external sensors and actuators without soldering.

Module Construction: Built on a premium multi-layer FR-4 glass epoxy PCB with standard Arduino UNO REV3 pin header layout, gold-plated contacts, and integrated surface-mount hardware.

Operating Voltage & Logic: Operating logic runs at 5V DC, maintaining pin-compatibility with standard Arduino UNO shields.

Handling Precautions: Observe standard ESD (electrostatic discharge) procedures when handling. Avoid touching component leads or the surface-mount chip components directly.

Environmental Limits: Operating temperature range spans -40°C to +85°C. Keep protected from static discharge, conductive metal dust, and liquid moisture.

The Modern Evolution of the UNO: Position as the ultimate upgrade to the classic Arduino UNO REV3, giving makers 32-bit processing power and wireless IoT capabilities while maintaining shield compatibility.

Zero-Hardware Visual Output: Highlight the onboard 12 x 8 LED matrix as a standout feature for creating visual indicators, notifications, and interactive projects without buying extra displays.

Recommended Cross-Sell Add-ons: Pair with Arduino UNO Shields, Qwiic / STEMMA QT Sensors, 12V / 24V DC Power Supplies, and USB Type-C Cables.

Essential IoT Starter Board: Perfect for smart home dashboards, cloud telemetry nodes, connected automation systems, and advanced STEM robotics projects.