[sdiy] 4017 sequencer

[Ken Stone]

Use a summing mixer such as the one shown here
http://www.cgs.synth.net/modules/mixer.html, with each pot of the sequencer
connected as per the exampe pot in the circuit duiagram.

If this is too complex for you, try the following:
Connect each pot so that its clockwise end is to the appropriate pin of the
4017, and its anti-clockwise end is to 0V. Connect each of the middle
terminals through a small signal diode such as the 1N4148 to the CV jack.
These diodes will isolate the pots from each other so they  wont effect each
other

You should get over 4 octaves that way.

Ken

>I'm working on a 4017 sequencer (actually a 74HCT4017N, all i could find 
>locally). It's very basic, clocked by a 555 and each number output 0-9 
>has a 1K pot on it, then to a CV jack. I'm running it on a +5V computer 
>power supply. My problem is when I change the pitch of a step, the pitch 
>of others are affected. All pots and jack are grounded, and I've tried 
>various VCOs.
>
>Also, even with bigger pots the pitch range is about 1 octave. How  can 
>this be increased?
>
>Thanks much in advance!
>Daryl
>
>
>http://www.synthnoise.com
>
>
>
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au  
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
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