Shields are add-on boards designed to plug directly onto the Arduino’s main PCB, expanding its capabilities without the need for complex wiring or additional hardware. These shields can add everything from network connectivity and motor control to audio output and displays, making the Arduino platform incredibly versatile for a wide range of projects.
In addition to its usual input/output functions, the Arduino is also capable of generating a composite video signal, allowing you to display basic graphics or text on a standard TV using a simple yellow RCA video cable. In this guide, I’ll walk you through how I built my own composite video-out setup for the Arduino in under 15 minutes, using just a few basic components and minimal code.