As I have seen a few people complain about on the forums, I am having trouble getting my HDD activity LED to behave properly. It worked fine as long as I can remember from when I built my computer ...

I was investigating some low-end laptops and rejected a couple on the principle that for some confounding reason, manufacturers of low-end units have cut out the hard disk and the wireless LEDs(!) One ...

Okay, this circuit is really part of the "Knight Rider" project. I have separated it purely for the benefit of web search engines looking for a "Hard Drive Activity Meter". It uses the same basic ...