The Arduino UNO R4 WiFi is a variant of the Arduino UNO R4 series, specifically designed to incorporate wireless connectivity:
- Processor: Like the Arduino UNO R4 Minima, it uses the 32-bit Renesas RA4M1 microcontroller with an Arm® Cortex®-M4 core, running at 48 MHz, offering significant performance improvements over earlier UNO boards.
- Memory: It maintains the same memory configuration as the R4 Minima with 256 KB of Flash memory, 32 KB of SRAM, and 8 KB of EEPROM.
- Wireless Connectivity:
- Wi-Fi: The board includes an ESP32-S3 co-processor, which handles Wi-Fi connectivity. This allows the UNO R4 WiFi to connect to Wi-Fi networks, communicate with the Internet of Things (IoT) services, and interact with web-based applications directly from the Arduino board.
- BLE (Bluetooth Low Energy): In addition to Wi-Fi, it supports Bluetooth Low Energy, enabling short-range wireless communication with smartphones, tablets, and other Bluetooth-enabled devices.
- USB-C Port: Similar to the R4 Minima, it uses a USB-C port for programming and power supply, enhancing its modernity and compatibility with contemporary devices.
- Additional Features:
- Enhanced ADC: It offers a 12-bit ADC for more precise analog readings.
- CAN Bus: The board includes a CAN bus interface for automotive and industrial applications.
- HID Support: The UNO R4 WiFi supports HID functionality, allowing it to act as a keyboard, mouse, or other HID device.
- Programming: The Arduino UNO R4 WiFi is fully compatible with the Arduino IDE. It also introduces new libraries and examples to handle the Wi-Fi and Bluetooth functionalities, simplifying the development of wireless projects.
- LED Indicators: Along with the standard LEDs, there are additional indicators for Wi-Fi and Bluetooth connectivity status.
The Arduino UNO R4 WiFi expands the UNO family by adding wireless communication capabilities, making it particularly suitable for IoT projects, remote control, data logging to the cloud, or any application where wireless connectivity is beneficial. It maintains the Arduino ecosystem’s simplicity while providing users with tools to explore the world of connected devices and IoT without needing additional hardware for wireless communication.
Here’s what the UNO R4 Minima brings to the table:
- Hardware compatibility with UNO form factor: The UNO R4 Minima maintains the same form factor, pinout, and 5 V operating voltage as its predecessor, the UNO R3. This ensures a seamless transition for existing shields and projects, leveraging the extensive and unique ecosystem already established for the Arduino UNO.
- Expanded memory and faster clock: Prepare for more precise calculations and the ability to handle complex projects with ease. The UNO R4 Minima boasts increased memory and a faster clock speed, empowering you to tackle demanding tasks effortlessly.
- Extra on-board peripherals: The UNO R4 Minima introduces a range of on-board peripherals, including a 12-bit DAC, CAN BUS, and OP AMP. These additional components provide you with expanded capabilities and flexibility in your designs.
- Extended 24 V tolerance: The UNO R4 Minima now supports a wider input voltage range, allowing power supplies up to 24 V. This enables seamless integration with motors, LED strips, and other actuators, simplifying your projects by utilizing a single power source.
- SWD connector: Debugging is a critical aspect of any project. Simply connect an external debugger to the UNO R4 Minima and effortlessly monitor the inner workings of your system. Stay in control and gain valuable insights.
- HID support: The UNO R4 Minima comes with built-in HID (Human Interface Device) support, enabling it to simulate a mouse or keyboard when connected to a computer via a USB cable. This convenient feature makes it a breeze to send keystrokes and mouse movements to a computer, enhancing usability and functionality.
Get ready to unlock a world of possibilities with the Arduino UNO R4 Minima. Its exceptional features and enhanced capabilities make it the perfect companion for your innovative ventures.