[sdiy] 10 step sequencer

[Tim Parkhurst]

> You can keep the output pulse the same
> width as the clock input by simply running the output pulse and the clock
> into an
> AND gate (a trick used in the ARP analog sequencer). Unfortunately, this
> will require 10 AND gates if you want to the outputs separate. An easier
> method might be to run +V and the clock input into an AND gate and run the
> output of that gate into the ENABLE input on the counter. I'm pretty sure
> that would do the trick, but I'd want to breadboard it before I could
> guarantee that.
> 

Now that I look at it. I'm pretty sure this last trick wont work. It looks
like the ENABLE input on the 4017 holds the selected output high. I was
thinking it turned the outputs on and off, but it doesn't. Looks like the
AND gate trick is the easiest. The 4081 is a quad CMOS AND gate, so you
would need three of these to control all ten outputs.

Tim Servo
"Without a struggle, there can be no progress." -Frederick Douglass



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