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Dual Attack Release (AR) Envelope Generator - DIY Modular in a Week 5.1

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Day 5: Envelope Generators (AR, AD, ADSR, etc)
Part 1: Dual AR Envelope Generator (Attack Release) with a loop function
Difficulty: Intermediate
Price: ~17$ (I say 16 in the video, but forgot the 5V power regulator)
MiaW playlist: • Modular In A Week (MIAW)
Visit my Patreon page for more (different) content, or if you just want to support my work more than just a thumbs up :)
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New day, new type of module. Today I focus on Envelope Generators. The first one to be done is a simple Attack (Sustain) Release Envelope generator with a loop function, which makes it useable as a LFO with variable waveform. This design is also done by Nicklas Rönnberg and you can find schematics and a strip board layout on his page below. Enjoy this, and the "jam" done in a separate video.
Links to schematics, parts and other relevant stuff:
Link to Niklas Rönnbergs page with schematics and strip board layout:
familjenronnber...
Link to the frontpanel design svg file:
www.dropbox.co...
Link to the component spreadsheet:
www.dropbox.co...
Link to my dropbox folder where ALL the files for all the episodes as they become available:
www.dropbox.co...

Опубликовано:

16 авг 2024

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Комментарии : 15

@zbradbell 4 года назад

this was a fun one to build. I used a 40106 and it worked great. I also got mine down to 7HP wide. I basically standardized my modules on 3.5HP, which is just wide enough for a regular potentiometer. May seem weird, but it's never a problem .

4 года назад

Good to know the 40106 worked! That means the 5v is not needed. 🙌 good job minimizing it. I’m working double time trying to make everything not take up too much room. 😉

@erikbartmann 4 года назад

You're awesome! In which episode do you explain, how to create a frontpanel? Regards, Erik

@dougnut_8046 5 лет назад

It's Wednesday my dudes

@marciom909 4 года назад

I have built this and it works, but it outputs lower than 5v, so my vca or filter doesnt open to max. Which resistor should I change on the output op amp buffer? Also, could i swap for a 40106 (12v) to get a higher amplitude LFO too? Thanks!

@BanjoMasterPete 5 лет назад

Another great video Kristian! Question though about component choice, couldn't you swap the 74HC14 with a 40106 and skip the voltage regulation? I've used the 2 chips interchangeably before without problems

5 лет назад

Yepp, in retrospect I should have tried that... When I built these I didnt do them in order as shown now, so this was the first module I did which used Logic chips. So when I got to the other modules like the 40106, 4046 etc etc and noticed that they work on 12V I figured I could have done that... I'll make a note about that in the component list, so people can try it.

@spot2028 5 лет назад

@ This sounds better, so I think I will try the 40106 too. My question is: the voltage goes into the opamp, but we also need to power the Vcc of the chip as well, correct? Thanks

5 лет назад

Spot 20 Yes the 40106 should be powered from +v and gnd. (If that is what you mean) DO NOT POWER IT WITH -V!

@spot2028 5 лет назад

@ Yes, that's what I meant! Cool. So, just wondering, if using the 74HC14, would the VCC need to be 5 volts, and not the 12 volts? Thank you!

5 лет назад

Exactly. That’s why Banjo suggests using a 40106 instead which works with 12v. A 74hc14 can’t tolerate more than around 5v...

@sethheaster5715 4 года назад

Where do you get the plastic panels that you mount everything to, and what are the big containers that you screw the modules into?

4 года назад

The plastic panels are done by a laser etching firm. I talk about it in an earlier video. The cases are just standard eurorack cases that can be found everywhere. ( I found mine in a dumpster). New ones can be quite pricey though. A plywood box with the right dimensions work aswell.

@sethheaster5715 4 года назад

@ Where did you get the plastic panels? And how do you power all the modules?

4 года назад

Seth Heaster I make the panel design in inkscape which I then send to the laser etching/cutting firm. They use a material called lasermax which is mostly used for name tags. So it is very flimsy. The power supply is discussed in episode 0 and also in a later video about ripple and even another one where I show how to build a bigger better psu than the first one I built. Check out the “modular in a week” playlist that is in every video description and you will find most of the information you seek I think. :) I will do a separate video on panels.