Looking for practical Arduino projects? This guide shows how to control a relay from your smartphone using an Arduino Uno — either via Bluetooth or Wi-Fi.

Arduino Uno R4 WiFi comes with built-in Wi-Fi and Bluetooth capabilities, along with additional pins and a new, faster processor.

SparkFun has just launched the “IoT RedBoard – RP2350” and “IoT RedBoard – ESP32” boards with Arduino UNO R4 form factor based on respectively Raspberry Pi RP2350B + RM2 wireless module and ...

Alessandro also addresses the durability of the Uno R4, with protection diodes to prevent damage from common user mistakes. The new features, such as the switch to a USB-C connector and the option to ...

Wi-Fi version with Espressif module The R4 WiFi version comes with an Espressif ESP32-S3 module for Wi-Fi and Bluetooth Low Energy connectivity. The bright 12x8 red LED matrix is ideal for creative ...

CoreR4 is a learning-focused project that explores the Arduino Uno R4 WIFI from the ground up, bypassing the Arduino framework to work directly with the Renesas RA4M1 microcontroller. The goal is to ...

Features common to Arduino R4 – ‘WiFi’ (€25, below) and ‘Minima’ (€18, right) IO connections are in physically similar positions to Uno R3, and IO remains 5V.

The UNO R4 Wi-Fi features Wi-Fi and Bluetooth Low Energy (BLE) connectivity, while the UNO R4 Minima provides a cost-effective option for those seeking the new microcontroller without additional ...

Scheduled to appear in late May, Uno R4 will come in two versions: the plain ‘Uno R4 Minima’, and ‘Uno R4 WiFi’ with an Espressif S3 WiFi module that also gives it Bluetooth Low Energy. “We ...