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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
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Posted: Sun Jul 13, 2014 9:07 pm Post subject:
Aristoteles Logic Synth Subject description: Dögenigts modular lunetta (WIP) |
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Hail - cult of lunetta!
Here I will be posting updates on my lunetta modular, which I chose to call Aristoteles, danish name for the ancient greek Aristotle who founded the logic statements as we know them today. The synth is also using CMOS logic to determine the states of the outputs.
It's all described on my blog www.dogenigt.com which I will be linking to. It contains all the documents from the building process, along with videos and schematics.
Schematics: http://data.xn--dgenigt-q1a.dk/Elektronografi/Aristoteles%20Logic%20Synth/schematics/
The modules will be (in order from top left and down) the following:
- 8 x 40106 oscillators with PWM control and inputs to the freq pots, i.e. for vactrol (DONE)
- 4040-divider with 12-step rotary switch. (DONE)
- 4040-divider with 12-step rotary switch + output for each of the 12 stages.
- 4017-based 10-step counter with output for each step and reset input. (DONE)
- 8 logic gates: 6 x 4081 AND-gates, 1 x 4093 NAND-gate and 1 x 4070 XOR. (DONE)
- 4046 PLL "glissandi gen" module with HI and LO pots + outputs from some of the pins.
- CMOS "rungler" with 4021 shift reg and 4046 internal osc with external clock.
- 4049 "distortion" module with white noise acting as random clock gen.
- 4049 "distotrtion" module gaining external input to clock.
- 8 channel mixer with sallen-key filter and volume for each channel. (DONE)
- Main volume + mono output module. (DONE)
- Power module with starve pot and starve button. (DONE)
Update #5: Step Sequencer. - 27th of January, 2015
Dögenigt.com: 4017-based 10-step counter with output for each step and reset input.
Update #4: Logic Gates Module. - 15th of January, 2015
Dögenigt.com: 8 x AND-gate module.
Update #3: Divider module. (simple) - 4th of September, 2014
Dögenigt.com: 4040-divider with 12-step rotary switch.
Update #2: Oscillator module. - 12th of July, 2014
Dögenigt.com: 8 logic/square oscillators with PWM, range knob and momentary buttons.
Visit this post on my site with all the details, schemes, pics, vids etc.
Update #1: Mixer module. - 22th of May, 2014
Dögenigt.com: 8-channel mixer with sallen-key LP-filters + volume knob on each channel
Visit this post on my site with all the details, schemes, pics, vids etc. _________________ www.dogenigt.com
Everything should be made as simple as possible, but no simpler. - Albert Einstein Last edited by Dogenigt on Wed Jun 03, 2015 9:05 pm; edited 7 times in total |
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commathe
Joined: Jul 26, 2013 Posts: 153 Location: Beijing
Audio files: 5
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Posted: Sun Jul 13, 2014 9:24 pm Post subject:
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Very cool! I've actually been planning on doing the exact same thing, inspired by the dlb electronics site. Make a site documenting a modular as I go along.
Unfortunately I don't seem to be able to connect to your site... I'm in China. Don't know if the host you are using is blocked here. |
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Tomoroh Hidari
Joined: May 04, 2012 Posts: 39 Location: Vienna
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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
Audio files: 4
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Posted: Mon Jul 14, 2014 9:10 am Post subject:
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commathe wrote: | Very cool! I've actually been planning on doing the exact same thing, inspired by the dlb electronics site. Make a site documenting a modular as I go along.
Unfortunately I don't seem to be able to connect to your site... I'm in China. Don't know if the host you are using is blocked here. |
Weird... Try http://dogenigt.blogspot.com/
Tomoroh Hidari wrote: | nice choice of name!
still busy learning and building smaller, standalone devices but surely planning to start a modular sometimes. so your blog is very helpful! thanks! |
Glad you could use it - I am updating the original post with the planned modules so you know what's coming up _________________ www.dogenigt.com
Everything should be made as simple as possible, but no simpler. - Albert Einstein |
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commathe
Joined: Jul 26, 2013 Posts: 153 Location: Beijing
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Posted: Mon Jul 14, 2014 6:33 pm Post subject:
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Bingo! It's blogspot that is blocked here. |
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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
Audio files: 4
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Posted: Tue Jan 27, 2015 5:53 pm Post subject:
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Updated the top post with the latest additions, it's starting to look n sound beasty! _________________ www.dogenigt.com
Everything should be made as simple as possible, but no simpler. - Albert Einstein |
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SUGARAT
Joined: Jan 21, 2015 Posts: 19 Location: California
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Posted: Wed Jan 28, 2015 10:41 am Post subject:
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looks sick. Cool idea using the 4049 as a random clock. |
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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
Audio files: 4
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Posted: Wed Jan 28, 2015 3:17 pm Post subject:
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SUGARAT wrote: | looks sick. Cool idea using the 4049 as a random clock. |
Yeah, that's one of the coolest modules if you ask me. I can't wait to combine it with the AND-gates letting through the oscillators or clocking the 4017 with it.
Here's a recording of the noise/random clock driving a 4046 PLL:
https://soundcloud.com/dogenigt/liquidcircuit001 _________________ www.dogenigt.com
Everything should be made as simple as possible, but no simpler. - Albert Einstein |
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SUGARAT
Joined: Jan 21, 2015 Posts: 19 Location: California
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Posted: Thu Jan 29, 2015 12:53 pm Post subject:
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Great sounds. And those are all cool ideas. I bet you could use it as data in on a shift register and then use an osc to clock the "speed" of the noise.
A module with multiple random outs at both different and the same clock divisions would be super useful, I think. |
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synaesthesia
Joined: May 27, 2014 Posts: 291 Location: Germany
Audio files: 85
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Posted: Thu Jan 29, 2015 1:24 pm Post subject:
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Wow! Lots of updates to your Logic Synth since I checked your site last time.
Quote: | Yeah, (the 4049 random clock) that's one of the coolest modules if you ask me. |
I think I found all updates, but missed the one describing the 4049 random clock. Can you share that one too? |
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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
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DUBmatze
Joined: Feb 18, 2013 Posts: 150 Location: south Germaica (schwabilon)
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Posted: Thu Jan 29, 2015 11:06 pm Post subject:
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nice thing! i like it.
(... in your shematic you shorted all the outputs of the 4069 and 40106 to Ground ? ) |
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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
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Posted: Thu Jan 29, 2015 11:11 pm Post subject:
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DUBmatze wrote: | nice thing! i like it.
(... in your shematic you shorted all the outputs of the 4069 and 40106 to Ground ? ) |
Thank you! Grounding the unused pins is done to prevent noise from floating in/outputs and can also reduce power consumation (so I was told) _________________ www.dogenigt.com
Everything should be made as simple as possible, but no simpler. - Albert Einstein |
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commathe
Joined: Jul 26, 2013 Posts: 153 Location: Beijing
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Posted: Fri Jan 30, 2015 12:10 am Post subject:
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You should ground inputs, but not outputs! |
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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
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Posted: Fri Jan 30, 2015 12:42 am Post subject:
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commathe wrote: | You should ground inputs, but not outputs! |
Ah! Makes sense with the schmitt trigger, if the input is pulled down or set to low. But in the case of the 4069/4049 I think I read somewhere that unused op amps should be shorted to be disabled... right?
Nice to have it clarified - specially before I go to work with this circuit! Maybe I should post all my beta schemes to have your feedback. _________________ www.dogenigt.com
Everything should be made as simple as possible, but no simpler. - Albert Einstein |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
Audio files: 705
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Posted: Fri Jan 30, 2015 6:34 am Post subject:
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Dogenigt wrote: | commathe wrote: | You should ground inputs, but not outputs! |
Ah! Makes sense with the schmitt trigger, if the input is pulled down or set to low. But in the case of the 4069/4049 I think I read somewhere that unused op amps should be shorted to be disabled... right? |
Unused opamps are often configured as voltage followers and then grounded. But the 4069/4049 aren't opamps,
although the 4069UB can be (ab)used to behave like one. Shorting outputs is something you want to avoid with these chips,
which is also why you can't just connect outputs together. (with the exception of connecting gates parallel for a larger output current) _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
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commathe
Joined: Jul 26, 2013 Posts: 153 Location: Beijing
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Posted: Fri Jan 30, 2015 10:24 pm Post subject:
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You shouldn't ground an unused op-amp either! Generally you configure it as a voltage follower, but connect the output *only* to the inverting input. That way the op-amp neither sinks or sources any current. (well, almost none)
Also, PHOBoS is correct that using an inverter as an amplifier is just making it behave sort of like an op-amp. It's not an op-amp at all. |
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revtor
Joined: Oct 05, 2005 Posts: 79 Location: NewJersey, USA
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Posted: Sat Jan 31, 2015 8:55 am Post subject:
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Dogeninght -you've got a great blog site there, awesome projects.
Keep up the good work!
~Steve _________________ beep blurp flurrrp fiszzzzp pow bakka wakka wakka -A synth freaks mental notes. |
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droffset
Joined: Feb 02, 2009 Posts: 515 Location: London area
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Dogenigt
Joined: Oct 25, 2009 Posts: 48 Location: Denmark
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