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NOVEL 12V 1Amp Industrial Grade SMPS Power Adapter
Original Arduino UNO R4 WIFI
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Introducing the latest addition to the Arduino lineup, the Arduino UNO R4 WiFi board, which represents a significant leap forward in functionality and capabilities. Building upon the rich heritage of the UNO series, this advanced version incorporates cutting-edge features to empower your projects with remarkable efficiency.
The key highlight of the UNO R4 WiFi lies in the seamless integration of the ESP32-S3 Wi-Fi module (ESP32-S3-MINI-1-N8), bestowing the UNO with built-in Bluetooth and Wi-Fi functionalities. This integration ensures a comprehensive connectivity solution for enhanced versatility and convenience.
As a member of the first UNO series of 32-bit development boards with WiFi, the UNO R4 WiFi microcontroller marks a departure from its predecessors, which relied on 8-bit AVR microcontrollers. Leveraging a robust 48 MHz Arm Cortex-M4 microprocessor, this board leverages the prowess of the Renesas RA4M1 series microcontroller (R7FA4M1AB3CFM#AA0).
Its expanded memory capabilities are truly impressive, featuring 256 kB flash, 32 kB SRAM, and 8 kB of EEPROM. To facilitate seamless and efficient communication between the RA4M1 and ESP32-S3 modules, a reliable logic level translator (TXB0108DQSR) is employed, ensuring optimal performance at all times.
Upgrade to the Arduino UNO R4 WiFi microcontroller board today and unlock an unparalleled level of innovation within the realm of Arduino, ushering in a new era of limitless possibilities for your projects.
Find the best deals on the Original Arduino Uno R3.
Also, read our blog on the Best Arduino Board explaining the different types of Arduino boards.
Also check the Arduino UNO R4 Minima.

| Overview |
48 MHz Arm Cortex-M4 microprocessor with a floating point unit (FPU) |
| Memory |
256 kB Flash Memory |
| Peripherals |
Capacitive Touch Sensing Unit (CTSU) |
| Power |
The operating voltage for RA4M1 is 5 V |
| Communication |
1x UART (pin D0, D1) |
| Wi-Fi |
Wi-Fi support with 802.11 b/g/n standard (Wi-Fi® 4) |
| Bluetooth |
Bluetooth 5 |
| Shipment Weight |
0.03 kg |
| Shipment Dimensions |
10 × 8 × 4 cm |
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)
256 kB Flash Memory
32 kB SRAM
8 kB Data Memory (EEPROM)
Capacitive Touch Sensing Unit (CTSU)
USB 2.0 Full-Speed Module (USBFS)
14-bit ADC
Up to 12-bit DAC
Operational Amplifier (OPAMP)
The 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
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 support with 802.11 b/g/n standard (Wi-Fi® 4)
Bit rate at up to 150 Mbps
2.4 GHz band
Bluetooth 5
0.03 kg
10 × 8 × 4 cm
This product comes with a 1-year manufacturer warranty from the date of purchase, covering manufacturing defects only.
The product shows signs of physical damage, mishandling, exposure to water/moisture, fire, natural calamities, unauthorized repairs, improper storage near heat or direct sunlight, or alteration in any way.