7-Segment Display: $13 Arduino Protoshield: $10 (To easily mount the display on top of the Arduino. This is optional, you can just use perfboard instead.) ...

Using a monitor to extend your laptop's display, or to give you a bigger screen for work or play can be super useful. Here's how to do it.

There are so many nice hacks in [Joekutz]’s retro LED display project that it’s hard to know where to start. There’s his DIY LED display controlled by an Arduino UNO.

Does your desktop computer need some extra screen space? We can show you how to use your laptop as a monitor if you need a second display: Here's what to do.