Arduino® UNO R4 WiFi®
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
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