Introducing the latest addition to the Arduino lineup, the Arduino UNO R4 WiFi board. This new version of the UNO board brings significant advancements, making it a powerful tool for your projects. The standout feature of the UNO R4 WiFi is the integration of an ESP32-S3 Wi-Fi module (ESP32-S3-MINI-1-N8) which equip the UNO with Inbuilt Bluetooth and WiFi.
The UNO R4 WiFi is part of the first UNO series of 32-bit development boards, being previously based on 8-bit AVR microcontrollers. There are thousands of guides, tutorials, and books written about the UNO board, where the UNO R4
WiFi continues its legacy.
Pin Configuration:

Powered by a 48 MHz Arm® Cortex®-M4 microprocessor, the board utilizes a RA4M1 series microcontroller from Renesas (R7FA4M1AB3CFM#AA0). With enhanced memory capabilities, the UNO R4 WiFi boasts 256 kB flash, 32 kB SRAM, and 8 kB of EEPROM. Additionally, a logic level translator (TXB0108DQSR) facilitates seamless communication between the RA4M1 and ESP32-S3 modules, ensuring optimal performance. Upgrade to the Arduino UNO R4 WiFi and experience the next level of Arduino innovation.
Specification:
| Model | Arduino UNO R4 WiFi |
|---|---|
| Overview | 48 MHz Arm Cortex-M4 microprocessor with a floating point unit (FPU) 5 V operating voltage Real-time Clock (RTC) Memory Protection Unit (MPU) Digital-to-analog Converter (DAC) |
| Memory | 256 kB Flash Memory 32 kB SRAM 8 kB Data Memory (EEPROM) |
| Peripherals | Capacitive Touch Sensing Unit (CTSU) USB 2.0 Full-Speed Module (USBFS) 14-bit ADC Up to 12-bit DAC Operational Amplifier (OPAMP) |
| Power | Operating voltage for RA4M1 is 5 V Recommended input voltage (VIN) is 6-24 V Barrel jack connected to VIN pin (6-24 V) Power via USB-C at 5 V |
| Communication | 1x UART (pin D0, D1) 1x SPI (pin D10-D13, ICSP header) 1x I2C (pin A4, A5, SDA, SCL) 1x CAN (pin D4, D5, external transceiver is required) |
| Wi-Fi | Wi-Fi support with 802.11 b/g/n standard (Wi-Fi® 4) Bit rate at up to 150 Mbps 2.4 GHz band |
| Bluetooth | Bluetooth 5 |
| GTIN | 7630049204591 |
| Shipping Weight | 0.03 kg |
| Shipping Dimensions | 10 × 8 × 4 cm |
Features:
- The UNO R4 is now a 32-bit Microcontroller board, being previously based on 8-bit AVR
- The board features 14 digital I/O ports, 6 analog channels
- Dedicated pins for I2C, SPI and UART connections.
- It has a significantly larger memory:
- 8 times more flash memory (256 kB)
- 16 times more SRAM (32 kB).
- Fastest 48 MHz clock Speed. It is 3x faster than its predecessors.
- Onboard ESP32-S3 module for Wi-Fi & Bluetooth connectivity,
- Onboard 12×8 LED matrix
- Making one of the most visually unique Arduino boards to date.
- The LED matrix is fully programmable, where you can load anything from still frames to custom animations.
Package Includes:
1 x Arduino UNO R4 WiFi ABX00087
DFRobot FireBeetle ESP32-E IoT Microcontroller with Header (Supports Wi-Fi & Bluetooth)
X2 ELF 88MM Micro brushless racing kit
F450 F550 / Q450 Q550 Replacement Arm Red (220mm) – Made in INDIA
Assassin 5 inch 222mm Drone Racing frame Kit
TFMini-S Micro LiDAR Distance Sensor for Drones UAV UAS Robots (12m)
TF02-Pro LIDAR Distance Ranging Sensor FOR DRONES UAV UAS Robots (40M) IP65 LiDAR
APM 2.8 Basic Flight Controller kit with GPS Module Combo Kit
APM 2.8 Upgraded Flight Controller kit with GPS Module Combo Kit
APEX DC HD 5” FPV Frame Kit
PDB-XT60 with BEC 5V and 12V
IX2 90mm Micro FPV Racing kit
Uno R3 CH340G ATmega328p Development Board with Micro-USB
Creality carborundum glass platform kit 235 x 235 x 4mm
F450 / Q450 Quadcopter Frame(PCB Version with Integrated PCB) + Plastic Landing Gear Combo Kit – Made in INDIA
ABS Plastic Landing Gear for Quadcopter (Pack of 4) – Made in INDIA
5V-12V DC Brushless Driver Board Controller For Hard Drive Motor 3/4 Wire
HSKRC 3 Inch 140mm Carbon Fiber Racing Kit
LD Robot D100 Triangulation Lidar
Official Raspberry Pi Keyboard, White/Red
Mark4 5 inch 225mm carbon fiber frame kit
RPLiDAR A1M8 360 Degree Laser Range Finder – 6m (Radius Range)
500mm Trapezoidal 4 Start Lead Screw 8mm Thread 2mm Pitch Lead Screw with Copper Nut
ARF Quadcopter Economy Combo Kit
Arduino Nano 33 IOT with Header ABX00032 





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