1 Arduino UNO R4 WiFi Development Board Original.

The new Arduino UNO R4 development board comes in two versions: the UNO R4 WiFi and the UNO R4 Minima. It runs on the Renesas RA4M1 (Arm Cortex-M4) processor with a clock speed of 48MHz, which provides a 3x increase over the UNO R3. In addition to that, the SRAM has been upgraded from 2kB to 32kB and the flash memory has been increased from 32kB to 256kB to accommodate to more complex projects. Furthermore, in response to requests from the Arduino community, the USB port has been upgraded to USB-C and the maximum power supply voltage has been increased to 24V. The board provides a CAN bus, allowing users to minimize wiring and perform different tasks by connecting multiple extension boards. Finally, the new board also includes a 12-bit analog DAC.

MCU:Arm cortex M4
Memory:256KB Flash/32KB SRAM
Operating voltage:5V
Input voltage:6-24V
Clock speed:48MHz
Programming port:USB-C
WiFi/BLE:ESP32-S3-MINI
LED Matrix: 12×8(96 red LEDs)
Additional connections
Qwiic connector
OFF pin
VRTC pin
Digital pins:14
PWM:6
ADC:6
DAC:1(12bit)
SPI:1
I2C:2
CAN:1