Triple Envelope Follower | The Schlappy Minute

video upload by SCHLAPPI ENGINEERING

"This is the Schlappy Minute.

Today I show you how to use the Boundary Layer as a triple envelope follower."

Introducing Boundary Layer by Schlappi Engineering

video upload by SCHLAPPI ENGINEERING

"Boundary Layer is a triple cycling slew acting as a powerhouse of modulation, audio mayhem, and obscure modular tricks."

00:00 Intro Montage
00:26 Introduction
00:43 Control Overview
01:50 Stereo Drone Patch
04:54 Three Percussive Envelopes
07:50 Envelope, Portamento, and Modulator
10:45 Outro jams

Check with dealers on the right for availability.

8 Patches with Boundary Layer by Schlappi Engineering

video upload by Stazma

"New Schlappi Engineering module alert!!!!
Welcome the Boudary Layer, a triple cycling slew acting as a powerhouse of modulation, audio mayhem, and obscure modular tricks in the tradition of Serge DUSG, the Make Noise Maths, our own Boundary, and others while also bringing a few new things to the table.

I'll show you some of my favorite patches with it, most can apply to other similar modules so it might interesting to anyone.

Have fun!"

Schlappi Engineering BOUNDARY LAYER / triple function generator / extensive playthrough

video upload by BRiES

"BOUNDARY LAYER by ‪@SCHLAPPIENGINEERING‬ is an apex triple function generator for eurorack. It has all the tricks up its sleeves and (as usual) is just a joy to work with due to it's well thought out interface and versatile feature set.
In this video I tried getting across how damn useful function generators are, how BOUNDARY LAYER works and how much fun it is to make patches with the module.
I hope you enjoy the video."

0:00 intro
0:40 feature overview
41:22 patch examples
1:00:15 closing thoughts



Boundary Layer is a triple cycling slew acting as a powerhouse of modulation, audio
mayhem, and obscure modular tricks. Each of the channels can act individually as:
-a modulation oscillator
-voltage controlled slew (including portamento)
-AR/AD envelope (decay or release determined by choice of input).

All three channels are tied together by three global inputs, as well as three outputs which select the MAX, MID, and MIN of all three voltages. Using different combinations at audio rate allows for patch programmable stereo drone synth capabilities.

Features

3 separate channels
3 global inputs
3 combined outputs MAX/MID/MIN
Oscillates from low LFO rate (a minute?) to audio rate (>10kHz with exponential feedback)
A CV input switchable between RISE/FALL/BOTH
Bound input for simultaneous control over cycling rate and amplitude
TRIG input for AD envelopes
SLEW input for AR envelopes and portamento or filtering
EOC ouput header switchable between EOR and EOF
16 HP
Skiff friendly 32mm depth (including cable)
current draw: +12V 170mA, -12V 100mA

Check with dealers on the right for availability.

BTFLD Cv to Gates | The Schlappy Minute

video upload by SCHLAPPI ENGINEERING

"This is the Schlappy Minute.

Today I show you how to use the BTFLD as a gate extractor for control voltage signals. I'll be using a stepped voltage from a Nibbler so the results are going to be on the clock, but feel free to experiment by sending cycling envelopes, LFOs, whatever you want, to get some weird wonky gates out of it."

Stereo Sine | The Schlappy Minute

video upload by SCHLAPPI ENGINEERING

"This is the Schlappy Minute.

Today I show you how to make big stereo sounds using the sine and co-sine output of the Three Body, alongside some phase modulation."

Relentless Kick Drums - Schlappy Jam

video upload by SCHLAPPI ENGINEERING

"New year for Schlappy Patching! We are no going to upload half of these to Stazma's channel to see if we can get more people to see these patches, so please go over here in two weeks for the next episode: / stazma

Too many hard kicks for no reasons.

Have fun!!"

808 Kick + | The Schlappy Minute

video upload by SCHLAPPI ENGINEERING

"This is the Schlappy Minute.

Today I show you how to patch a clasic 808 style kick drum and then make it weird, all within the Angle Grinder."

BTMX pattern remix - Schlappy Patching 2025 EP.7

video upload by SCHLAPPI ENGINEERING

"New year for Schlappy Patching! We are no going to upload half of these to Stazma's channel to see if we can get more people to see these patches, so please go over here in two weeks for the next episode: / stazma

In this one we are going to use the BTMX to process a fixed trigger pattern and use the OR logic to add hits to it, so you can play around creating fills by flipping the switches!

Have fun!!"

BTFLD burst generator | The Schlappy Minute

video upload by SCHLAPPI ENGINEERING

"This is the Schlappy Minute.

Today I show you how to use the BTFLD as a "burst generator", in other words how to feed it signals to extract clusters of gates from them."

BTFLD Noise Generator | The Schlappy Minute

video upload by SCHLAPPI ENGINEERING

"This is the Schlappy Minute.

Today I show you how to use the BTFLD as a weird noise source."

Nibbler's Shift Register - Schlappy Patching 2025 EP.5

video upload by SCHLAPPI ENGINEERING

"In this one we are going to use the shift register part of the Nibbler (two of them actualy) to generate the base of a pattern."

dream forge ... Syntakt, A4, Minifreak, Modular ... Electro, Chillstep, IDM

video upload by substan

"Recorded in one take into 1010music Bluebox.
Mixed & mastered in Ableton Live.

Drums: Syntakt, Basimilus Iteritas Alter
Bass/Kick: Neutron
FM Lead: Schlappi Engineering Three Body
Pad: Minifreak
Other tonal sounds: Analog Four MK II
Squarp Instruments Hapax - sequencing

This track is available for my patrons.
The great support from my patrons makes all of this possible ... thank you so much guys !!
/ substan "

Angle Grinder Pings | The Schlappy Minute

video upload by SCHLAPPI ENGINEERING

"This is the Schlappy Minute.

Today we make lovely percussions with the Angle Grinder!"

Nibbler & BTFLD combo - Schlappy Patching 2025 EP.3

video upload by SCHLAPPI ENGINEERING

"In this one we are going back to use the BTFLD as a sub audio buddy to the Nibbler, to create more gates and stepped voltages out of it."

BUCHLA & FRIENDS: THE SYNTH MAKER SHOWCASE Event Set for LA Next Weekend Jan 25 & 26

Tickets available at Eventbrite

"We’re gathering over 70 boutique synth makers in one awesome Silverlake spot so you can learn, listen, and live the latest in electronic music sound production. This hands-on, headphones-only gathering gives you a chance to hear the best sounds science has ever created. From additive to subtractive, analog to digital, keyboards to breath, audio to visual (yes- some video synths will be here too!), modular to full-size polyphonic, eurorack to Serge to Buchla, you’ll meet synth makers and synth enthusiasts alike. This will be January’s biggest two-day collection of hands-on synths on the West Coast! If you love creative sound, you need to be here."

Delicious food (including vegan) from Moby Rick’s fish tacos, incredible carbonated beverages from United Wild Brew. Exhibitors: 1010music • 4ms • After Later Audio • AIAIAI • AJH • ALM Busy Circuits • Animal Factory • Ashton Research • ASM • Bastl Instruments • Bitwig • Black Corporation • Bored Brain • Buchla • Catalyst • Circuit Happy • Crosspatch • Days of Yore • Rain City Modular • Doepfer • Dogbotic Labs • Dreadbox • Drift DJ • Elektron • Endorphines • eowave • Eternal Research • Five12 • Flame • Frap Tools • Future Retro • Genki Instruments • Groove Synthesis • Jomox • LA Synth Club • Mega Modular Corp • Melbourne instruments • MEMS project • Meris • Modbap • Moog Foundation • Mystic Circuits • Netherblade • New Systems Instruments • Noise Engineering • Noisebug • Novation • Null Modular • OXI Instruments • Polyend • Prism Circuits • Roger Linn • Schlappi Engineering • Sleepy Circuits • SoCal Synth Society • SOMA • Soundwork Shop • Studio Electronics • Supercritical • SynthRISE • TipTop • Tobinski • Touellskouarn • U.D.O. • Vermona • Wavea • Waveform Magazine • Wavesequencer • Weston Precision Audio • WMD ... & more!

Buchla organizes this event to make a stronger synthesizer community. We make it free to attend and affordable for exhibitors. This makes the vibes great - after all, we are all making our own waves!"

Stereo Rungler and using chaotic sounds in a track - Schlappy Patching 2025 EP.1

video upload by SCHLAPPI ENGINEERING

"In this one we are going back to first ever patch we made last year: the Rungler.
I'll expand on it a little bit, make it stereo and show you a fun way to use chaotic sound as a sound design tool in Abelton Live at the end."

BTFLD Feedback | Schlappy Patching

video upload by SCHLAPPI ENGINEERING

"Episode 22 for Schlappy Patching!

In today's episode I will show you some stuff you can do with the feedback from the BTFLD, how to control it via CV using an external VCA and even use it a control voltage source to 'disturd' your patches."

Switching Things with Muxlicer | Schlappy Patching

video upload by SCHLAPPI ENGINEERING

"For this one we have a guest of honor, the Muxlicer by Befaco!
And I'm going to show you a few fun things you can do using many outputs from the Schlappi modules into a switch for interesting and complex results."

Brutal Beats And Sound Design With Schlappi Engineering 100 GRIT

video upload by MATTHS

"Let's get down and dirty with the Schlappi Engineering 100 GRIT eurorack module. A heavy heavy distortion unit that just packs so much power.

Features:

8 brass touchpoints
2 inputs to transistor core low pass filter
Voltage control over frequency, resonance, and gain
OTA VCA with soft saturation characteristics
Distortion circuit based around a vintage headphone amplifier driven into instability
Three position x100 gain switch with off, on, and momentary on settings
Each input and cv input is normalled to a different feedback path (6 total)
Seperate outputs for the VCA and distortion
Can operate as a vintage voiced VCA and LPF or a screaming distortion and noise effect
All analog design
14 HP
Skiff friendly 25mm depth
POWER DRAW: +12V 55mA, -12V 70mA"

/// Connect With MATTHS ///
🕸 WEBSITE w/ links - www.matthsmatthsmatths.com

Complex Oscillator featuring Tiptop Audio & Buchla 259t | Schlappy Patching

video upload by SCHLAPPI ENGINEERING

"Episode 20 for Schlappy Patching!

For this one we have a guest of honor, the 259t by Tiptop Audio & Buchla, wich make for a great time to talk a little bit about 'complex oscillators'.
We will compare the Three Body and the 259t to see and hear how different they are and we will make some music and noise with both of them.

Have fun watching!!"

Schlappi Engineering BTFLD / trying to explain the folding / modulation

video upload by BRiES

"BTFLD by Schlappi Engineering is a unique take on the wavefolding concept, as it uses binary conversion (and clever engineering) to create breaks in the waves without really changing the shape of the slopes. You have to see it otherwise it won't make a lot of sense. That's what this video is about.

At this point I'm really still getting to know BTFLD by ‪@SCHLAPPIENGINEERING‬ but I wanted to share a few insights. Everything was already patched up as I was figuring things out so it made sense to just set up my camera and do a quick video."