Hero VCO module

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Here we have the Hero voltage controlled oscillator in Kosmo format. This is my idea of a nice 3340 based VCO, combining features I like from several previous designs. It has fixes for the 3340's most problematic attributes: there's no frequency shift when pulse rate changes and no ringing on the pulse wave falling edges. Amplitudes are a uniform ±5 V for all waveforms - which include sine in addition to triangle, ramp, and pulse. There's a ridiculous but nice 11 position octave switch. But what's that extra pin header for?
NOTE! If you want to build one of these, at the moment there are just a few board and panel sets available on my Tindie store (along with some other nice modules, check them out): www.tindie.com/stores/analogo...
00:00 Intro
00:10 Hero VCO
00:55 3340 chip
01:56 Front panel tour
05:21 Under the hood
06:00 Pulse width frequency shift and negative voltage supply
09:24 Pulse wave ringing
10:12 Output amplitudes
12:33 Demo on scope
15:18 Sound demo
17:53 Wrapup and teaser
Panel design files, Gerbers, and documentation in GitHub repository at github.com/holmesrichards/her...
Sidekick VCO video: • Sidekick VCO module
Blog post: analogoutputblog.wordpress.co...
Music: Ringtone by Rich Holmes

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Опубликовано:

6 июл 2024

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Комментарии : 12

@harrywoodell7008 Год назад

"All" the 3340 fixes in one place! This will be a big help when I build my LMNC oscillators. I've stumbled across most of this on the Discord, but not so well organized and presented. Can't wait to see if this Hero has a Sidekick.

@peternoya Год назад

Awesome project. This VCO is a thoroughbred workhorse. Thanks for sharing your knowledge with us!

@rogrevs Год назад

Nice job Rich. Loving the way that the octave switch goes up to 11. Looking forward to seeing the companion module next weekend.

@mcshafty1 Год назад

Surely no explanations are necessary for a knob that goes to eleven The osc sounds great Rictch - I haven't done a build in ages. This could get me out of retirement 😂 Looking forward to vid 2

@EdEditz Год назад

Great job! The octave switch is a great addition. I tried doing that on mine but it was too early on in my DIY journey for me to pull that off successfully.

@tamasgal_com Год назад

Awesome work 😃

@VanBroicz Год назад

Very nice! Maybe pair it with a sequential switch so you can cycle through those outputs

@russliquid4858 Год назад

ive never heard zener pronounced 'zeeeeeeener' ha .... potatoes potaaaaatoes .... thank you for sharing your knowledge! ive been enjoying the fruits of your labor

@analog_output Год назад

It's one of those words I read long before I heard someone say it and I learned to pronounce it the way it looked to me like it should be - and I have no idea how Clarence Zener pronounced it. But Merriam-Webster gives both ˈzē-nər and ˈze-nər as acceptable, whew.

@russliquid4858 Год назад

@@analog_output well given the fact i didnt even know what a zener diode was a year ago ima go with zeeener from now on 🤠

@frz77 Год назад

why don't you ship to Italy?

@analog_output Год назад

I've tried shipping to Europe. It's expensive and untracked (or even more expensive) and goes wrong too often. And if it gets lost or returned to sender (which has happened to me) then I have to re-send it at my own considerable expense.