Turning my diode ladder filter into a eurorack module

Support the channel: / moritzklein
Working simulation on falstad: tinyurl.com/yebjs8cg
Giveaway - Official rules
1. I'm giving away two fully-assembled filter modules, including power connector & mounting screws.
2. Anyone who posts a comment under this video saying they're interested in winning a module will enter the raffle. There are no other requirements.
3. When writing your comment, please keep KZbin's community guidelines in mind: kzbin.infode/howyo.... Any comments that don't comply will be disqualified.
4. The two winners will be picked at random and announced/contacted on the 21st of may 2021. (05/21/2012) Deadline is 20.05.2021 at 11:59pm.
5. Shipping cost is included in the prize. (Unless you have specific, costly requirements. We'll work this out once we know who won.)
6. KZbin is not a sponsor of this contest. You, as the participants, must release KZbin from any liability related to this contest.
7. I will not be collecting any personal data from the participants (except for the winner's shipping addresses, but I will not store those).
In this video, we're adding two new filter modes to my diode ladder VCF: high-pass and band-pass - and there's a bunch more improvements in store. Also, it's time to make some nice-looking eurorack modules.
Chapters:
00:00 Intro
01:40 Adding the high-pass mode
09:34 Adding the band-pass mode
12:53 Improving the CV range & processing
22:13 Driving the diodes & smoothing the resonance
25:30 Building the module
30:22 Giveaway, outro & final demo

[@matthiasuzelac8360]

"I am interested in getting a module" - thanks to you I found the courage to start synth DIY!

[@BurnettX360]

“I’m interested in getting a module”. I am really grateful for the time and energy you put in your channel. Thanks to you I finally found the energy to start experimenting myself. Keep up the good work. It’s greatly appreciated!

[@lucienrapilly6407]

"i'm interested in building this module myself but it's still ok if you send me one"

[@MoritzKlein0]

haha!

[@droningbrightness3403]

I would very much appreciate a tutorial on doing the pcb design for eurorack style projects. There seem to be a lot of nuances like parts spacing, trace size, placing ins outs and other pcb mounted controls. Great work as always

[@KentBuchla]

Would also love to see a video on PCB design and layout.

[@raketensessel5570]

Oh yeah! me too!

[@dmrfnk]

And something about SPICE for noobs.

[@Mecholable]

"I am interested in getting a module". Thank you for the great video series. Having a follow up video on the design process of the PCB would be awesome.

[@analogsketchbook]

"I am Interested in getting a module"...thanks for all your great videos. They've really helped me get my modular system off the ground.

[@erickvond6825]

I cannot in so many words relate how much I appreciate the level to which you have gone to impart this information. I had previously known quite a bit and through watching your channel it's given me a new perspective on the way I build filters from this point forward. Using diodes the way you have seems counterintuitive. That said I won't even try to deny the results. Kudos man.

[@daneguitarist1]

I love the style/look of this module, has like a real technical look with that clean white panel and lines very cool my dude! I learn a ton from your channel

[@Peter_S_]

Awesome series! Pro Tip: 28:00 when soldering components with leads, trim them prior to soldering because they are heat sinks. 😉

[@MoritzKlein0]

hadn't thought of that - good tip!

[@lukaswinter8409]

Wow! I've been following your series for a while now and I am amazed that you are not only teaching us the most fascinating things for free but also giving away physical samples of your work. So definitely, yes, I am interested in receiving a module! Keep up the amazing work!

[@MishoIV]

"I am Interested in getting a module" Your channel got me hooked on diy synths, it's great that you are making more and more videos. Cheers from Slovakia.

[@Driver71Film]

"I am interested in getting a module." For an otherwise clueless beginner, thanks to your videos, I've been able to get a better understanding of DIY synth building.

[@WolfeLienhardt]

I am so happy you're making videos the way you do man. Thank you.

[@matthehat]

“I’m interested in getting this module”. Super impressed with your videos. You have explained the functionality of the diode ladder filter in a way that is easy to understand.

[@pretzelb5915]

"I am interested in getting a module" beste Videos für den Einstieg in die Welt des synth DIYs

[@raketensessel5570]

"I am interested in getting a module" - i´m very much a novice in diy-eurorack and find your videos highly interesting! keep up the nice work moritz!

[@wileyabt]

I just discovered your channel at the perfect time! I have a module I'm just barely starting to design, despite not knowing much electrical engineering beyond the basic physics. This in depth design and explanation is perfect for me :)

[@evilhowser]

"I'm interested in getting a module" Great series overall! Love that you take the time explain all the circuits in detail and actually provide intuitive explanations as to how things work. Super helpful for when I'm trying to figure this stuff out on my own!

[@johnmahoney5393]

“I’m interested in getting a module,” absolutely! Sounds and looks great. Keep up updated, thanks!

[@TobaTobias]

"I am interested in getting a module" - A fan of your work from Mexico! Cheers and long live modular

[@sanderbelmans6788]

"I am interested in getting a module" - Hey Moritz, as always great explanation. You are correct about the soldering problem with ground connections. This is why most PCB software default to 'thermal reliefs' on pad-to-plane connections. I am looking forward to more of your work!

[@davidanderson7920]

"I am interested in getting a module" - Thanks Moritz. Another great video. Your filter series came at a great time for me!

[@christophermases9992]

"I am interested in getting a module" Thanks for sharing the falstad circuit, will be trying to make one. Love your videos, they are all excellent.

[@louiskohler1951]

"I am interested in getting a module" - Amazing, you are doing a fantastic job with all of your videos. Love them!

[@AndersWeijnitz]

Blown away by the dedication to this! Great work!

[@danielecastiglioni1127]

"I'm interested in getting a module" Your ability in explaining and designing step by step electronics for music is unmatched. You taught me so much, thank you for that and of course thank you for the giveaway opportunity. Good luck everyone

[@sitraka___]

Your videos are excellent! I recently started copying found schematics with little understanding then found your channel. Now thanks to you I’m starting to get a slightly better grasp on things, so thank you. I too am interested in winning one of your module!

[@scottgilliam8707]

"I'M INTERESTED IN GETTING A MODULE!!!" - I love the big wood table you shoot your videos on

[@LouisCann]

“I’m interested in getting a module”! the low pass filter on this thing sounds super super beautiful ♥️

[@henryfoster2777]

I'm interested in getting a module - they sound great and look great too! Your channel has inspired me to start synth DIY, and to fix up some damaged synths I have come across. Love the work you are producing!

[@BarbischLukas95]

"I am interested in getting a module" - I've built some modules myself, but never really put the necessary amount of effort in to it to get it to a level that you just did. Looks really nice!

[@alveydoug]

The first sweep was very impressive. The jam was fun too. The Rack sounds were richer than the Yamaha and Roland sources (through an iPad). The graphic for the panel and this episode are very attractive as well.

“I am interested in getting a module” - thanks for all the content you’re putting out, I’m really enjoying the mix of diy/music/educational. You’re doing a great job at teaching the concepts in an applied, down-to-earth and easy to understand way - really helps a lot to newbies like me, thanks 🙏🏻 .

[@felixXawesome]

"I am interested in getting a module" Such a great project! Thanks for sharing!

[@nevek20]

"I am interested in getting a module". Seriously love this filter it sounds great. Your PCB layout is also really well done.

[@djbooom68]

"I'm interested in getting a module" your videos are definitely the best to anyone that wants to dive in the DIY Synth world ! Keep on the good work !

[@TheProducerTV]

"I am interested in getting a module" This filter sounds really great, thanks for going over the process of designing and building it!

[@alexspies7074]

"I am interested in getting a module" - thank you for putting so much work into your videos and designs, awesome to watch!

[@The_Digital_Arts_World]

Moritz, First … thank-you for the detailed video on the design and development of this diode ladder filter. Although i have had extensive training in electronics, so much of that basic knowledge has slipped away with age and continuous changes in what I did for a living even though I still do build my own stuff once in a great while. As you get older, the “I want it right now” starts to kick in more and more. Second … I am definitely interested in one of these modules whether it be in a give away, manufactured, or DIY form, so please keep us posted. And thanks for the incredibly well done video !!!

[@sonosus]

I am interested in winning a module - thanks for everything you've done to help me learn analogue electronics. Bravo Moritz Klein!

[@riccardol3752]

Thank you Moritz for all your videos! You reignited my interest in diy electronic :) I’m interested in getting one of the module too. Keep up with the great videos!

[@getbentaudio585]

I am so interested in this filter!!! I know I already committed but the was before the video premiered!!! You always have such great info to pass.

[@atanastonchev6268]

Just started my DIY adventure thanks to you, for which I am very grateful. And yes, I am very interested in getting a module.

[@VIPMaJoR89]

"I am Interested in getting a module" Ich will schon ewig in die DIY Synth-Welt einsteigen und mit deinen Tutorials erscheint es gar nicht mehr so weit weg. Awesome videos dude. Keep em coming!

[@MoritzKlein0]

ist es nicht - los geht's!

[@mikedubz5576]

You are a genius. What i sick sound you make with this gear. Its truly inspiring.

[@SyrusRayne]

"I am interested in getting a module" - I'm just getting started with modular synthesis. Your videos have been super helpful!

[@jorouunum7999]

"I am very interested in winning one of these modules!" I stumbled across your channel while looking for a method of creating an oscillation unit with cross fade capabilities as I was struggling in my circuit design. I ended up walking away with a fundamentally different and much better understanding of electronics as a whole and couldn't be more thankful. By piecing together what you showed and using it to augment my own experience I've been able to get 2 modules off the ground in the past 2 weeks in my spare time, where as my first one took nearly 2 months and still has problems. Thank you for your work, truly!

[@CypherWitch]

"I am interested in getting a module" looking forward to what you will be working on next. Very good/helpful videos

[@FunkyMongoose]

"I am interested in getting a module" - you have the best guides on the topic on youtube!

[@matthewliset4870]

I would like a module! Thank you Moritz for all of your videos. Definitely my favorite channel on KZbin.

[@DroneDrummer]

Just completed this 5 video series. This is hands down the best series on any educating type video I've ever scene. I learned so much and now I have an amazing filter. I was able to learn enough to modify this during the build process to work with my volca modular. Thank you so much for these videos. I now have a double wavefolder and a sweet filter for my volca!

[@MoritzKlein0]

glad to hear! got a demo? :)

[@DroneDrummer]

@@MoritzKlein0 haha no but I can try to put one up! I only changed the 3 resistors at the beginning right after the first 1uf and then again at the output. The one used to amp it like crazy i had to drop down along with boost up the one after the last 1uf to slow down the drain and stop it from filtering at base level. Wish I could post a pic! It looks so awesome on the breadboard

[@DroneDrummer]

I think I deleted my post somehow. Reposting the link to the demo. I redid the video with the Double Wave folder alongside the diode filter. Sounds crazy! kzbin.info/www/bejne/bpbOoIWNbdZqd6M

[@arnieforte]

"I am interested in getting this module". I always enjoy your videos. You are excellent in explaining the process and concepts. Thanks.

[@andrewlorenz5807]

Heck to that! I'll build one! Thanks for the great work on this project, very inspiring.

[@tdzucker]

“I am interested in getting a module” I posted a few module designs on r/modular but I still have so much to learn! Kudos on bringing this lush sounding filter to life my friend.

[@AngryPhotoGuy]

"I am Interested in getting a module" - I love the look of the module. It's quite beautiful.

[@IvFrozen1]

"I am interested in getting a module". Love your electrical engineering metaphors and how you end up with usable designs without a single formula :)

[@amicarla]

I would be interested in adding this lovely filter module to my rack. I'm so glad to see this video series took the eurorack route! Also, that white faceplate is gorgeous.

[@DerMatty]

„I am interested in getting a module” - Thank you for all the great videos! I learned a lot and started building modules again!

[@jtsquid]

I am interested in this module!! So well done. Love the sound, the look of the panel, the knobs, the thorough design explanations! Most definitely will build this one regardless of winning the giveaway. :-) Thank you!

[@vlastimilelias]

Great video, thanks. Try to look for "Thermals" setting in your PCB design tool. It connects ground pads to ground plain over smaller wires only, which makes soldering much easier. I learned this immediately after soldering my first PCB 😁

[@LeVilainCam]

That module looks and sounds sweet as hell, deffo interested, and great work mate !

[@alexandernijman4784]

Your series makes my life in building a synth a lot easyer, offcourse i also am interested in the raffle, free stuff is nice!

[@akasickform]

The dub you did at the end was unexpected, but absolutely 💯 Shame I missed the chance to enter by a whole two years, but glad Ive got this far through and then heard this!

[@bolloyo]

It'd be awesome getting one of those! Great work you're doing, congrats!

[@chuckbergeron]

"I am interested in getting a module" - that's one beautiful device, aesthetically pleasing to the eyes and ears!

[@t3hjnz]

I am interested in one of your giveaway modules :) This series just keeps getting better. Thank you!

[@nntblst]

"I am interested in getting a module"..... feels like a good addition to my current setup!!!

[@JulienKirsch]

“I am interested in getting a module” thanks for the great content Moritz

[@maxnukason3677]

"I am interested in getting a module" - thanks for all the effort you put in those videos and the community !

[@h.r.terror9421]

Sound great! Good job! Looks beautiful too!

[@neoconcret8813]

"I am interested in getting a module" great videos and amazing explanations!

[@diegozanutti4875]

I am interested in getting a module! I am new to this kind of diy way of making music and with your videos you have convinced me to just dive into this hobby, it looks so much fun!

[@HanVZulu]

Great sound! This is going in to my project queue.

[@tomy6839]

"I am Interested in getting a module" - Thank you for these videos. It helps me a lot to learn how synths work!

[@faultywiring]

"I'm interested in getting a module" I've been working with hardware synths for years but I'm starting to piece together a Eurorack setup, your filter is beautiful! Thank you for all your dedicated work on this channel.

[@welredmonkey]

"I'm interested in getting this module." I am just beginning with modular synthesis after some effects pedal builds, and discovered the channel just today. This type of informative videos is very helpful. I look forward to watching again, this time with a notebook. Thanks.

[@abschall4586]

"I am interested in getting a module" - sounds and looks great! Beautiful work 👌🏼

[@paulkilleen2914]

Your explanations of circuit design are easy to understand for us non technical people. I am certainly interested in your ladder filter give away. Thank you.

[@LDRCdriver]

“I’m interested in getting a module” …Truly inspiring stuff and also good sounding! Really want to build one!

[@pontusschierman3193]

”Im interested in getting a module ” thanks for sharing your work and inspiration!

[@davidburke8838]

Moritz - "I am interested in getting a module" - You have an inspiring series on synthesizer basics. Great work! Thanks!

[@mickdallas]

"I am interested in getting a module" - yet another great video. Keep up the good work!

[@porl42]

"I am interesting in getting a module". Absolutely stunning panel design!

[@vegansynths7757]

How Awesome! I would love to get my hands on one of these! Thank you so much for your awesome videos!!!

[@MarkusAudio]

"I´m interested in getting a module", because having a piece of history from one of the best teachers of electronics is a must...and because I Love Acid too :-)

[@thauolar186]

"I am interested in getting a module" Your guides helped me make my very first VCO

[@uzmeyer1752]

DAmn, this is some quality content. I just recently started to get into eurorack by building a rack myself from scratch with the goal to keep everything as low budget and diy as possible. So far i have a very basic osc and dirty filter (WASP based). I of course would love to get one of your quite professional modules but if i don't win i will certainly make up my own board based on your design to implement it because damn does it sound sweet.

[@lorenmax9460]

brilliant design (!)--the lack of headers connecting the two boards is excellent, as well as providing holes beneath the 3.5mm jacks. To me (after many error prone kit builds) you're setting a standard, and I wish more (all) diy eurorack producers would aspire to this design level, and follow suit. You rock! Cheers ;D

[@harrisonweinstein6167]

I am interested in getting a module. Your videos are amazing, you are the "Ben Eater" of analog synths!

[@brandonmack111]

"I am interested in getting a module" I don't think I've ever seen someone design a PCB as a front plate - so that's pretty interesting! really nice result :)

[@HarmonicInterference]

“i am interested in getting a module” Great tutorials in electronics. Wish you the best!

[@JasonRoachable]

Interested in a module! It's been awesome watching your process and simple and concise descriptions.

[@k.s.8959]

I am Interested in getting a module - and loving your videos! good stuff. Gives me the courage to finally start designing my own ideas into eurorack :-)

[@mateopanadero9099]

"I am interested in getting a module" Awesome project and video channel! Cheers!

[@norrin_sad2778]

I am very interested in winning one of these modules! Your videos have been the best way for me to finally grasp audio electronic concepts, so thank you!

[@dV4l1b]

"I am Interested in getting a module" Love how it sounds and looks :D

[@amoddev3483]

This is literally the best channel

[@diegocera8322]

"I am interested in getting a module" 🤞🏼 Man, I love your videos. They always have good information, which is very necessary for someone just starting out (just like me, hahaha).

[@noisemodule]

I'm interested in winning one of these modules. I really appreciate your channel and although I don't own a Eurorack case or plan getting into it, I do have some semi-modular instruments and I would be happy to buy this module to support you even if I don't win. Great graphic design, by the way: simple, clean, and elegant! Good luck if you go into full production with this filter, and I look forward to seeing more modules from you!

[@ZombieChemicalBeta]

"I'm interested in getting a module" Just got my first oscilloscope recently, having a great time learning from your videos and trying out these on my own!