[sdiy] Sequencer design

blacet at blacet.com blacet at blacet.com
Tue Mar 10 17:58:13 CET 2015


A 4017 based sequencer (use the 74HC4017) is easier for tyros to deal with
but not a good design in terms of compexity and wiring.

An example of a sequencer/analog switch that is much more feature rich but
fairly easy to build is the Blacet Hex Zone.

http://www.blacet.com/BlacetUserPage/SS2800user.pdf

This fairly novel approach combines a 16 channel switch with two sequencer
banks and shows what can be done with a uC based module.


> Hello
>
> On 09.03.15 18:36 , Byron G. Jacquot wrote:
>> I'd nominate anything built around the CD4017 as the "classic" design.
>> It's a sequencer on a chip - just add clock. You can daisy chain them
>> for more steps - there's a schematic in the datasheet.
> Not that this would be wrong, but a big advantage of scanned
> potentiometer outputs / switch outputs (vs. the 4017-solution) is, that
> you can "sequence" any material you want. Instead of the voltage you can
> take audio. You even may use the potentiometers as crossfaders between
> two signals. Also you may feed different signals in each potentiometer.
> Have a look at the SND SAM 16 to get an idea of it:
> http://www.s-n-d.com/sam16e.html
>
> All this can be achieved only if you scan the outputs of the
> potentiometers.
>
> Florian
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