Arduino® UNO R4 WiFi®

Credits: https://arduino.cc

Why we have selected Arduino UNO R4 WiFi®?

Till date, Arduino® UNO board format is the most widely used board layout. People have developed their own versions of UNO board with the features that they want. So, to make them all compatible with VoidBot and let community use the board of their choice. But that's not the only reason for the selection. We all have been wishing to have Wifi® and Bluetooth® capabilities to the Arduino UNO R3 board and have been using some add-ons by using ESP32 modules. But not anymore, Arduino UNO R4 Wifi® already comes with that along with faster microcontroller Renesas RA4M1 (Arm® Cortex®-M4). But how much better is new Arduino® UNO R4 Wifi® is as compared to older Arduino® UNO R3? Here is a quick comparison.

Features	Arduino® UNO R3	Arduino® UNO R4 Wifi®
Microcontroller	Atmel® ATmega328P	Renesas RA4M1 (Arm® Cortex®-M4)
USB	USB Type B	USB-C®
Digital I/O Pins	14	14
Analog Input Pins	6	6
DAC	0	1
PWM Pins	6	6
Communication	UART, I2C & SPI	UART, I2C, SPI & CAN
Clock Speed (Main Core)	16MHz	48MHz
Memory (RA4M1)	32kB Flash, 2kB SRAM	256kB Flash, 32kB RAM
WiFi®	No	Yes
Bluetooth®	No	Yes
Qwiic® Connector	No	Yes
Onboard LED Matrix Display	No	Yes (12x8)
HID over USB	No	Yes

For more information, visit: Arduino UNO R3 Arduino UNO R4 Wifi