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jeanpat
Joined: Jan 15, 2018 Posts: 7 Location: france
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Posted: Mon Dec 24, 2018 8:54 am Post subject:
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Thank's again
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interstellar obscure
Joined: Mar 02, 2024 Posts: 2 Location: portland OR
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Posted: Sat Mar 02, 2024 2:18 am Post subject:
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PHOBoS wrote: | If I recall correclty Q0 is used as a rest position when the reset input is high because the 4017 has no option to disable
the outputs. It might be possible with a different design to use the CLK enable pin to hold the counter on the last step
but that would still give you 9 steps max. |
It's amazing that this was designed entirely with logic chips; feel like I've been looking for something like this forever, and it was here waiting all along.
would it be a simple matter to cascade 4017s in a way to get 16 steps and 16 pulses? From the 4017 datasheet:
I should try breadboarding it first to see how much one can do with 8 steps, but |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5599 Location: Moon Base
Audio files: 705
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Posted: Wed Mar 06, 2024 11:48 am Post subject:
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I designed this too long ago to be able to give a quick answer if it is possible or not.
There might be a way to use chained 4017s for more steps but I don't think you can simply replace the current counters
with a couple of chained ones. At the very least the 4029 would probably need to be wired up a bit different too.
You'd also need some larger switches of course to select the number of pulses/steps. The current circuit doesn't
use the CE inputs of the 4017 counters so at least those would be available for chaining.
also
you might like this one as well https://electro-music.com/forum/post-441325.html#441325 _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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interstellar obscure
Joined: Mar 02, 2024 Posts: 2 Location: portland OR
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Posted: Thu Mar 07, 2024 7:01 pm Post subject:
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without completely understanding the logic, was hoping there might be an easy solution for 16 steps. Nevertheless, thanks very kindly for your thoughts, and for the original post.
I just love the idea of getting this complex rhythm generator without any microprocessor. Particularly with timing/trigger circuits, I feel like CMOS still provides more reliable results.
I'll breadboard it and see what I get. Was hoping to make a stand-alone rhythm box similar to this commercial eurorack module:
https://www.youtube.com/watch?v=XU1LVE8WlIs |
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