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Richarius
Joined: Feb 22, 2014
Posts: 81
Location: Kitchener, Ontario, Canada
Audio files: 1
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 Posted: Sat Jul 02, 2016 8:12 am Post subject:
The Deathlehem Drain Oscillator
Subject description: An update to the CD4023 Pulse Width Oscillator of mine |
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For any out there that may have built my CD4023 / CD40106 'Pulse Width Oscillator' years ago (sometime in 2009), I've updated it a little bit, around the CD4093 quad NAND Gate chip and the CD40106 hex schmidt inverter chip.
Version 1.22 of the Deathlehem Drain Oscillator. As simple as the circuit is, the amount of sonic variety that it should be able to produce for 'noise fans', should be huge. 
The main CD4093 'oscillator' can be modulated on or off by 3 different sources:
1) Itself and / or
2) Modulator #1 and / or
3) Modulator #2
Modulator #'s 1 and 2 may be either, a CD40106 square wave oscillator, or an external (protected from negative voltage) input.
The outputs of Modulator #'s 1 and 2 CD40106 oscillators are also sent to a final mixer, that the CD4093 Oscillator is being fed to. Modulator #'s 1 and 2 may also individually be switched on or off.
All together, a single 'voice' of the Deathlehem Drain Oscillator will be able to have a heavily modulated oscillator voice; a modulated oscillator voice along with a second voice, or three non-modulated voices.
I've already begun work, translating the final schematic, to my auto-routing PCB software. If, all will work well, I may have the 1st PCBs etched today, if not tomorrow. Here's to hoping. 
Based on sounds produced by my old CD4023 triple input NAND Gate / CD40106 modulators - 'Pulse Width Oscillator', this little guy should be able to produce noise and metallic sounds of 'unknown liquids' flowing down and through the 'unknown Drain'. 
My original plan for this 'module' was to have 4 'voices'. Now that I'm optionally including the 2 modulators for each 'voice' into the output, I may be able to have a very sonically <sic> powerful 'drone machine' with only 2 'voices' - producing up to 6 individual voices. I can't wait to hear and play with this thing!
| Description: |
| Version 1.22 of the Deathlehem Drain Oscillator |
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| Filesize: |
270.25 KB |
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681 Time(s) |
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elmegil
Joined: Mar 20, 2012
Posts: 2179
Location: Chicago
Audio files: 16
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| Posted: Sat Jul 02, 2016 7:03 pm Post subject:
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| Howdy! Looks interesting |
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Richarius
Joined: Feb 22, 2014
Posts: 81
Location: Kitchener, Ontario, Canada
Audio files: 1
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| Posted: Mon Jul 04, 2016 8:35 am Post subject:
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| I've been having a helluva time using the auto-routing for the PCB within version 2.4 of Diptrace, over the weekend. I'm going to revert to manually laying it all out, instead. The # of 'jumpers' that have been created in almost 10 autorouting attempts so far, with various part placement attempts have all been failures. Due to work, I doubt I'll have time to do it until my coming weekend. (Fri. to Sun.) :-/ |
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rico C
Joined: Feb 27, 2014
Posts: 26
Location: Redondo Beach
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| Posted: Thu Jul 07, 2016 10:13 am Post subject:
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| awesome...and very cool to have you back sir! |
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piedwagtail
Joined: Apr 15, 2006
Posts: 297
Location: shoreditch
Audio files: 3
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| Posted: Fri Jul 08, 2016 6:47 pm Post subject:
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The boards I've done in this forum were all done in Diptrace without schematic to layout or autoroute. On simple designs it seems to me it's faster and more satisfying to layout everything myself.
I've just manufactured my first SMT board and that again was direct layout, although I found the multitude of vias a bit more challenging. Not quite as challenging as soldering the thing though!
R |
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Richarius
Joined: Feb 22, 2014
Posts: 81
Location: Kitchener, Ontario, Canada
Audio files: 1
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| Posted: Tue Jan 24, 2017 10:55 am Post subject:
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| piedwagtail wrote: | The boards I've done in this forum were all done in Diptrace without schematic to layout or autoroute. On simple designs it seems to me it's faster and more satisfying to layout everything myself.
I've just manufactured my first SMT board and that again was direct layout, although I found the multitude of vias a bit more challenging. Not quite as challenging as soldering the thing though!
R |
That actually re-encourages me to start building again. All of my playing in Diptrace was using autorouting from the schematics that I had created inside of it as well.
I did all of my direct layout in ExpressPCB for years. Was easy as heck.
I'll have to see if I can find the files for the Deathlehem Drain Oscillator on this computer to give a go again. (I can't remember whether I actually DID make the PCB, or if it were perfboard. I'll have to dig the module out and look at it.) |
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Richarius
Joined: Feb 22, 2014
Posts: 81
Location: Kitchener, Ontario, Canada
Audio files: 1
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| Posted: Sun Aug 06, 2017 5:34 am Post subject:
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| Richarius wrote: | | piedwagtail wrote: | The boards I've done in this forum were all done in Diptrace without schematic to layout or autoroute. On simple designs it seems to me it's faster and more satisfying to layout everything myself.
I've just manufactured my first SMT board and that again was direct layout, although I found the multitude of vias a bit more challenging. Not quite as challenging as soldering the thing though!
R |
That actually re-encourages me to start building again. All of my playing in Diptrace was using autorouting from the schematics that I had created inside of it as well.
I did all of my direct layout in ExpressPCB for years. Was easy as heck.
I'll have to see if I can find the files for the Deathlehem Drain Oscillator on this computer to give a go again. (I can't remember whether I actually DID make the PCB, or if it were perfboard. I'll have to dig the module out and look at it.) |
An update for this for anyone that has followed it:
Late last week, I found my flawed perfboard build of the above module and got 1 of it's 2 x CD4093 oscillator pairs, running without troubles.
The sound possibilities from it, are nowhere nearly as interesting as my old CD4023 Pulse Width Oscillator module, had been. There isn't as great a variance in sounds possible from the Drain, as there are from the PWO.
Modulating the chip's power input from an external CV, doesn't create as wide of a variation in sounds as I had hoped, either.
Using the ON/OFF modulation aspect of it as well, doesn't sound very much different from the original way that I had done it using a pair of CD4011 oscillators.
Overall? It isn't worth breadboarding, or, building. 
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https://tsol.space/crafting/composing-music/albums/ - my punk, ambient and experimental tunes |
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