There is a mistake in the schematic above, R1 should by tied to VCC instead of the 555 output.

D.

 

Cascading 4017's question

This was split from the above thread.

Welcome to AAC.

Congratulations, you have practiced the arcane art of necromancy, the revival of a long dead thread. Likely the OP (Original Poster) has solved his problem in the years that has passed, or thrown it away, or something.

Are you talking about this schematic?

If you are, and I'm not sure you are, check this out...

555 HYSTERETIC OSCILLATOR

It is an article I wrote for the AAC book.

This schematic has been tested, and was taken from another article in my blog.

LEDs, 555s, Flashers, and Light Chasers