[sdiy] 4017 sequencer

[James Patchell]

Using the asynchronous reset of a counter with decoded logic is never a 
good idea.

At 03:46 AM 12/31/2004 -0600, Pat Kammerer wrote:
>Hi all,
>
>I've been working on a little 8 step CV sequencer project, and I'm getting
>odd results.
>
>Here is the schematic;
>http://www.wearerecords.com/temp/4017_8step.jpg
>
>As you can hopefully see(sorry for the bad schematic), I am attempting to
>use the reset and a 1P8T switch to chose how many steps are used.  Another
>switch SPDT, enables or disables the chip.
>
>After much trouble shooting, I've gotten rid of any errors that I could
>find, and still there is an issue.  S1 works when it's selected for 1-4
>steps, but jams on 5 when selected to run 5-8 steps.  When stuck at step 5,
>it seems that ALL of the pots effect the CV that is output.
>
>If anyone can help me, with the information that I've given, I would be very
>thankful.  It already makes a really fun 1-4 step sequencer, so I really
>want the whole project to work.
>
>Thanks!
>Pat

         -Jim
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http://www.oldcrows.net/~patchell

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