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.

Inside the box, you will find: Arduino UNO R4 WiFi 32-bit microcontroller: the brains of your projects. Seven Modulino nodes consisting of sensors and actuators for different functionalities.

These days, there’s a huge variety of screens on the market for use with microcontrollers. OLEDs and graphic LCDs abound, while e-ink devices tempt the user with their clean look and low ener… ...