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.

They may seem simpler, but don't be fooled: microcontrollers are perfect for a lot of my more complicated setups for a number of reasons ...

We'll break down the major differences between all of them, as there's a lot to know if you're looking to invest in one of these to ensure you make the right choice. What is an ESP32? What ...