Zoomed-in view showing LEDs with labels titled WLAN, Fon, and DECT on a Wi-Fi router - Thomas Nuehnen/Getty Images Modern Wi-Fi routers give you a lot to work with in terms of troubleshooting issues ...

It is a pretty common first project to use an Arduino (or similar) to blink an LED. Which, of course, brings taunts of: you could have used a 555! You can, of course, also use any sort of oscillator, ...

Blinking lights near an ethernet port on an ethernet switch - Kynny/Getty Images Have you ever looked at the back of your computer and noticed the lights where the cables are plugged into your PC?

There's no shortage of budget-friendly TVs on the market these days. That said, if you're looking for the best cheap TV brand according to customer satisfaction, you should be shopping for a Hisense ...

The project illustrates high power LED being driven to create a cheap and simple blinking LED. The idea behind the blinking effect is done by connecting the LED in series with a blinking light bulb ...