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
ACEBOTT QD023 Motion-Sensing Glove with Encoders & Accelerometer & Enhanced ESP32 Controller
Official Arduino MKR Vidor 4000 ABX00022
ACEBOTT ESP32 Tank Robot Car Expansion Pack for QD001 - QD004
ODROID-XU4Q Single Board Computer
Self-Balancing 2WD Robot Chassis
F450 / Q450 Quadcopter Frame(PCB Version with Integrated PCB) + Plastic Landing Gear Combo Kit – Made in INDIA
2-Wheel Drive Rugged Robot Chassis with 37mm 37B280 Gear Motor
Official Arduino make your Uno Kit AKX00037
ACEBOTT QD010 Wireless Controller for Robot Car kit with Bluetooth Controller Expansion Pack
Combo of Raspberry Pi 4 Model-B with 1 GB RAM + Micro-HDMI Cable + Micro-USB to C type Converter
Mini Self-Balancing 2WD Robot Chassis with N20 Encoder Motors 





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