Arduino UNO R4 WiFi Development Board

The Arduino UNO R4 WiFi has been merged with RA4M1 and ESP32-S3 microprocessors and offers expanded memory, faster clock speed, and new onboard peripherals for increased capabilities. It also supports Wi-Fi and Bluetooth wireless connectivity, Qwiic ecosystem, HID support, and runtime error diagnostics, making it an ideal choice for makers of all levels.

Feature

• High-performance microcontroller with wireless capacity: Merged with RA4M1 and ESP32-S3 microprocessors and supports Wi-Fi and Bluetooth wireless connectivity
• Wider input voltage range: Supports an input voltage range of 6-24 V, enabling seamless integration and simplifying projects by utilizing a single power source.
• Dual-chip memory and clock speed: Provide a main core of processing capabilities with 48 MHz clock speed and ESP32-S3 for up to 240 MHz, and offer 256 KB of Flash memory by the main core where 512 KB of SRAM for ESP32-S3
• On-board peripherals: Features a 12x8 LED matrix, Qwiic connector, and additional pins, support for battery-powered RTC, providing expanded capabilities and design flexibility
• HID support: With built-in HID support, the UNO Rev4 WiFi can simulate a mouse or keyboard when connected to a computer via USB, making it easy to send keystrokes and mouse movements

Description

The Arduino UNO Rev4 WiFi is the first UNO board to feature a 32-bit microcontroller and an ESP32-S3 Wi-Fi module (ESP32-S3-MINI-1-N8). It features a RA4M1 series microcontroller from Renesas. The UNO Rev4 WiFi's memory is larger than its predecessors, with 256 kB flash, 32 kB SRAM, and 8 kB of EEPROM. It also includes an onboard 12x8 LED matrix, Qwiic connector, VRTC, and OFF pin.

The board is based on a 48 MHz Arm® Cortex®-M4 microprocessor with a floating point unit (FPU) and features a Real-time Clock (RTC), Memory Protection Unit (MPU), Digital-to-analog Converter (DAC), and 256 kB Flash Memory. The board also includes a Capacitive Touch Sensing Unit (CTSU), USB 2.0 Full-Speed Module (USBFS), 14-bit ADC, up to 12-bit DAC, and Operational Amplifier (OPAMP). The recommended input voltage (VIN) is 6-24 V with a barrel jack connected to the VIN pin (6-24 V) or power via USB-C® at 5 V.

The ESP32-S3 module is the secondary MCU with a built-in antenna for Wi-Fi & Bluetooth connectivity. This module operates on 3.3 V and communicates with the RA4M1 using a logic-level translator (TXB0108DQSR). It offers Wi-Fi support with 802.11 b/g/n standard (Wi-Fi 4) and Bluetooth 5, which enables easy wireless communication with other devices.

With the UNO Rev4 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.

Application

• Weather Monitoring
• Fitness Trackers
• Smart Agriculture
• Wearable Health Devices
• Automation Control Systems