Arduino UNO R4 VARIATIONS

Introducing the R4 Minima and R4 WiFi, two powerful variations designed to meet your project needs with flexibility and performance. Whether you're a beginner or an experienced developer, these boards provide a reliable platform for building innovative projects. The R4 Minima is perfect for those who need a streamlined, cost-effective solution for embedded systems, offering all the essential features to bring your ideas to life. On the other hand, the R4 WiFi adds the power of wireless connectivity, making it ideal for IoT projects and smart applications where seamless communication is key.

Both boards share a compact design, making them easy to integrate into various projects without compromising on functionality. The R4 WiFi is equipped with built-in WiFi capabilities, enabling remote control and data exchange, while the R4 Minima focuses on providing a simple, efficient platform for projects that don't require network connectivity. This allows you to choose the perfect board for your specific requirements, whether it's standalone applications or connected systems.

Choose the R4 Minima for straightforward projects or opt for the R4 WiFi to unlock the potential of wireless technology. No matter which variation you select, both boards offer dependable performance, making them a fantastic addition to your toolkit for electronics and innovation.

ARDUINO R4 WIFI

Features:

WiFi and Bluetooth Connectivity: Powered by the ESP32-S3 module, the R4 WiFi offers seamless wireless communication, enabling IoT applications, remote control, and data exchange.
Onboard LED Matrix: A built-in 12x8 LED matrix allows for dynamic visual feedback, animations, and real-time displays, adding a creative and interactive element to your projects.
Enhanced Security: Includes a cryptographic chip (ATECC608) for secure data storage, encryption, and authentication, making it ideal for IoT projects requiring robust security.
Improved Memory and Storage: Offers expanded memory and storage capacity, enabling the use of larger programs, more libraries, and complex algorithms.

Specifications:

Microcontroller: Renesas RA4M1, ESP32-S3 for Wi-Fi/Bluetooth
Flash Memory: 256 kB
SRAM: 32 kB
EEPROM: 8 kB
Wi-Fi®: 802.11 b/g/n (2.4 GHz, up to 150 Mbps)
Bluetooth®: Bluetooth® 5
Digital Pins: 14 (D0–D13)
Analog Input Pins: 6 (A0–A5)
DAC (Digital-to-Analog Converter): Up to 12-bit resolution
ADC (Analog-to-Digital Converter): Up to 14-bit resolution
I2C Pins: A4 (SDA), A5 (SCL)
UART: D0 (RX), D1 (TX)
CAN: D4, D5 (requires external transceiver)
Operating Voltage: 5V (RA4M1) and 3.3V (ESP32-S3)
Input Voltage: 6–24V (VIN or barrel jack)
USB-C® Power: 5V
On-Board Features: 12x8 LED Matrix (96 dots), OP AMP, HID support
USB Port: MicroUSB for programming/power
Form Factor: Classic Arduino UNO size
Temperature Range: -40°C to +85°C
Dimensions: 68.6mm x 53.4mm
Weight: Approx. 25g

Technical Details

Datasheet
Schematics Diagram

ARDUINO R4 MINIMA

Features:

Powerful Processing: Powered by the Renesas RA4M1 microcontroller with a 32-bit ARM Cortex-M4 processor, the R4 Minima offers enhanced performance for more demanding projects, providing faster processing power compared to traditional Arduino boards.
Classic Arduino Form Factor: Designed in the familiar Arduino Uno form factor, it’s easy to integrate into existing setups and projects, making it ideal for upgrading older designs without having to change the entire system.
Improved Memory and Storage: Offers expanded memory and storage capacity, enabling the use of larger programs, more libraries, and complex algorithms.