Here are the last four videos in the series:

Lighting Tutorial: 555 pros and cons

Links given in the video:

555 timer links

NX-01 build

555 infomation

On the right look for The 555 and read pages one and two

various circuits with the 555

And next building up the circuit:

Lighting Tutorial: The 555 build up

Strobing the 555:

Lighting Tutorial: Strobing the 555 timing chip

And a slide show of the circuits surrounding the 555:

Lighting Tutorial: 555 circuit slide show

Here is a link to all the circuits slides used in the show so you can print them:

circuit diagrams