Sparkfun teaches us about the 555

[tetsujin]

I know a lot of people still use 555's for flashers and things, and there's various resources for showing us how to use 'em in different ways...
Anyway, I'm a big advocate for understanding these sorts of things in more depth.
Sparkfun is a shop for electronics hobbyists, and they've been doing a video series that I think has been really informative... And they've just done one on the 555 chip - so I highly recommend checking it out if you want to understand the 555 a little better.