Demux

[xnihilo]

Just a thought to make one.

Find a PIC with enough I/Os. 1 input and 16? outputs.

Code something like..

If PIN_IN is high then
count = count +1
If count = 1 then high LED1
If count = 2 then high LED2
so on and so on...
If count = 17 then count = 0
Start over.

Every time PIN_IN goes high the counter increases.

Sure, but i was thinking about a cheaper solution. Such pic costs over 3usd. a demux is about .60 usd. i can't beleive such step-up switch doesn't exist.

[sayzer]

4017 is what you need.

You can have as many as you want with cascading.

A single pulse is good enough for all.

[xnihilo]

That's exactly what I was searching for.
Thank you for your help!