If you've ever used a Wi-Fi router to connect to the internet, you've probably wondered what all the blinking lights mean.

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, ...

Computer monitors often include one or more LED indicator lights that show these devices' operating status. Monitor manufacturers can build a set of signals -- made up of sequences of LED flashes and ...

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 ...

You know how it is. You’ve got that new project running, and while it doesn’t consume much power, it also doesn’t give much indication of whether it’s functioning or just sitting there with a dead ...

Add Yahoo as a preferred source to see more of our stories on Google. Modern Wi-Fi routers give you a lot to work with in terms of troubleshooting issues at home. This is mainly in the form of various ...