Description

Arduino UNO R4 WIFI

Overview

                If you are interested in getting an Arduino, here are its exciting details he Arduino UNO R4 WIFI combines the processing power and exciting new peripherals of the RA4M1 microcontroller from Renesas with the wireless connectivity power of the ESP32-S3 from Expressive. On top of this, the UNO R4 WIFI offers an on-board 12×8 LED matrix, Qwiic connector, VRTC, and OFF pin, covering all potential needs makers will have for their next project. With the UNO R4 WIFI, you can easily upgrade your project and add wireless connectivity to expand the reach of your current setup. If this is your first project, this board has everything you need to spark your creativity.

 

Key Features:

🚀 32-bit Renesas RA4M1 (ARM Cortex-M4) – 48MHz clock speed (3x faster than Uno R3).
📶 Built-in ESP32-S3 WiFi/Bluetooth Module – Enables IoT projects without extra shields.
🔌 USB Type-C Port – Modern, reversible connection for programming and power.
💡 Extended Memory – 256KB Flash, 32KB RAM (vs. R3’s 32KB/2KB).
⚡ Improved Power Options – 5V & 3.3V outputs, with 24V tolerance on Vin.
🛠️ Full Uno R3 Pin Compatibility – Works with existing shields and sensors.

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Technical Specifications:

• Microcontroller: Renesas RA4M1 (ARM Cortex-M4 @ 48MHz)

• Wireless: ESP32-S3 (WiFi 4 + Bluetooth 5 LE)

• USB Interface: Type-C (CH343 or similar USB-to-serial chip)

• GPIO Pins: 14 digital (6 PWM), 6 analog (12-bit ADC)

• Communication: UART, I2C, SPI (dedicated pins)

• Operating Voltage: 5V (logic level)

• Input Voltage: 6–24V (recommended 7–12V)

• DC Current per I/O Pin: 8mA (3.3V) / 20mA (5V)

• Dimensions: 68.6mm × 53.4mm (same footprint as Uno R3)

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Applications:

🌐 WiFi IoT Projects (Weather stations, smart home)
📱 Bluetooth Remote Control Devices
🔌 Prototyping with Modern Peripherals (Type-C compatible)
🎛️ Educational STEM/Kits (Compatible with R3 tutorials)

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⚠️ Notes:

• Made in China – Fully compliant with Arduino’s open-source specs.

• WiFi requires ArduinoIoTCloud or WiFi.h library.

• 5V logic level – Use level shifters for 3.3V sensors.

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🛒 Upgrade to Uno R4 WiFi—get wireless + Type-C convenience!

 

Arduino Uno R4 Wifi Type-C Made In China