When the only tool you have is a hammer, every problem looks like a nail. An LED ornament for the Christmas tree can be built in any manner of simple, easy implementations. You certainly don’t need an ...

Here's the plan: I want to use one bi-color resistor for Power and HDD activity on my briefcase box. I want it to be, say, green when just the power is on, and flicker red when there's HDD activity.

Experienced, proficient photographers and videographers know the importance of good lighting for their images. Cellphones, in particular, have very small sensors so they do not capture a lot of light.