ARDUINO UNO R4 WIFI (Original chip)
The Arduino UNO R4 WiFi is a powerful upgrade to the classic UNO, combining the Renesas RA4M1 microcontroller with an ESP32-S3 module for built-in Wi-Fi® and Bluetooth®. It maintains full UNO form-factor compatibility while adding advanced peripherals such as a 12×8 LED matrix, Qwiic connector, CAN bus, DAC, and expanded memory. Ideal for IoT, automation, and modern maker projects.
لوحة Arduino UNO R4 WiFi هي تطوير قوي للوحة UNO الكلاسيكية، حيث تجمع بين المتحكّم الدقيق Renesas RA4M1 ووحدة ESP32-S3 لتوفير اتصال Wi-Fi® وBluetooth® مدمجين.
تحافظ اللوحة على التوافق الكامل مع شكل UNO المعروف، مع إضافة ملحقات متقدمة مثل مصفوفة LED مدمجة (12×8)، وموصل Qwiic، ودعم ناقل CAN، ومحول رقمي-تماثلي (DAC)، بالإضافة إلى ذاكرة موسّعة.
تُعد خيارًا مثاليًا لمشاريع إنترنت الأشياء (IoT)، والأتمتة، ومشاريع الصنّاع الحديثة.
The Arduino UNO R4 WiFi brings next-generation performance and wireless connectivity to the iconic UNO platform. Powered by the Renesas RA4M1 32-bit microcontroller and paired with an ESP32-S3 module, this board delivers higher processing power, more memory, and seamless Wi-Fi® and Bluetooth® connectivity.
Designed with full hardware compatibility with the UNO R3, the UNO R4 WiFi supports existing shields, operates at 5V logic, and fits perfectly into current projects. New onboard features such as a 12×8 LED matrix, Qwiic I2C connector, CAN bus, operational amplifier, and 12-bit DAC greatly expand design possibilities without additional hardware.
With support for Arduino IoT Cloud, HID functionality, extended input voltage tolerance up to 24V, and built-in runtime error diagnostics, the UNO R4 WiFi is an excellent choice for beginners and advanced makers alike.
Tech specs
| Board | Name | Arduino® UNO R4 WiFi |
| SKU | ABX00087 | |
| Microcontroller | Renesas RA4M1 (Arm® Cortex®-M4) | |
| USB | USB-C® | Programming Port |
| Pins | Digital I/O Pins | 14 |
| Pins | Analog input pins | 6 |
| DAC | 1 | |
| PWM pins | 6 | |
| Communication | UART | Yes, 1x |
| I2C | Yes, 1x | |
| SPI | Yes, 1x | |
| CAN | Yes 1 CAN Bus | |
| Power | Circuit operating voltage | 5 V (ESP32-S3 is 3.3 V) |
| Input voltage (VIN) | 6-24 V | |
| DC Current per I/O Pin | 8 mA | |
| Clock speed | Main core | 48 MHz |
| ESP32-S3 | up to 240 MHz | |
| Memory | RA4M1 | 256 kB Flash, 32 kB RAM |
| ESP32-S3 | 384 kB ROM, 512 kB SRAM | |
| Dimensions | Width | 68.85 mm |
| Length | 53.34 mm | |
Applications
IoT and cloud-connected projects
Smart home automation
Robotics and motor control
Educational and learning platforms
Prototyping and product development
Sensor networks using Qwiic modules
USB HID devices (keyboard/mouse emulation)