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.

If you're looking to take on a new project with your Arduino, perhaps creating a smart trash can could be in the cards. Yes, it might sound strange but having a smart garbage bin could actually be ...

The project does require a Raspberry Pi and an Arduino, priced at about $35 and $20, respectively, bringing the total cost to an estimated $120. This project is also highly customizable.