[$11] DIY eurorack modular synth SSI2140 VCF | 4pole Low Pass Filter

video upload by HAGIWO

"My 77th original eurorack modular synth DIY projects.
4 pole low pass filter based on SSI2140 VCF IC.

working documents (schematics)
https://note.com/solder_state/n/n9fd3...

Study of SSI2140 Q VCA function (patreon)
Video of waveforms when tuning the resistance of the SSI2140 Q VCA.
https://www.patreon.com/posts/study-o..."

Ksoloti Gills Open Source DIY Desktop Unit

via Ksoloti

"Gills is a standalone desktop unit using the Ksoloti Core

Ksoloti is an environment for generating and processing digital audio. It can be a programmable virtual modular synthesizer, polysynth, drone box, sequencer, chord generator, multi effect, sample player, looper, granular sampler, MIDI generator/processor, CV or trigger generator, anything in between, and more.

Ksoloti is an environment for generating and processing digital audio. It can be a programmable virtual modular synthesizer, polysynth, drone box, sequencer, chord generator, multi effect, sample player, looper, granular sampler, MIDI generator/processor, CV or trigger generator, anything in between, and more.

The Ksoloti Core is a rework of the discontinued(?) Axoloti Core board. In short, Ksoloti aims for maximum compatibility with the original Axoloti, with some layout changes and added features. The Axoloti Core hardware board became unavailable at some point, but because Johannes graciously open-sourced the schematics (and since the global part shortage somewhat improved) it was possible to recreate a board nearly fully compatible to the original: enter the Ksoloti Core.

Using the Patcher software on your computer, you create your own sound patches by placing and connecting sound objects, or explore patches other users shared. You can edit any existing patches and even objects, or write entirely new ones from scratch. When you are satisfied with your patch, you can upload it to the Ksoloti Core’s internal memory – or save a collection of patches on SD card – so you can play it without your computer connected.

The fun really starts when you connect pots, buttons, LEDs or displays, sensors and more to control your patches and make Ksoloti a tactile and highly playable hardware instrument.

Board dimensions and layout aside, the two main hardware differences to the original Axoloti Core are:

Ksoloti Core does not have any audio and MIDI jacks on-board.
Ksoloti Core has more pins and functions broken out to headers.
Full information on getting started with the Ksoloti can be found on Ksoloti github here: https://ksoloti.github.io/"

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Wee Noise Maker PGB-1 – The all-in-one open-source pocket groovebox

video upload by Crowd Supply



via Crowd Supply

"Wee Noise Makers PGB-1 is an advanced yet portable sequencer that lets you craft complex musical pieces anywhere. This all-in-one, open-source, customizable device is designed to empower aspiring musicians, seasoned creators, and makers. It isn’t just an instrument—it’s your gateway to the world of music production and audio synths.

Rock Out, Anywhere
PGB-1 has an open-source stock firmware that makes it a playful and powerful groove box. It allows you to craft complex musical pieces with drums, bass, lead, samples, reverb, bitcrusher, overdrive, and others.

Orchestrated by an advanced sequencer with conditional steps, repeats/ratcheting, pattern chaining, chord sequencing, song mode, live sequencing effects, and more. And it’s also a hackable and customizable device, with CircuitPython, C\C++, and Ada support for programming your own synthesizers, video games, or any audio based projects.

Features & Specifications

Processor: Raspberry Pi RP2040

16 MB Flash
Audio IC: Cirrus Logic WM8960 (or equivalent)

Up to 32-bit at 48 kHz digital audio link
On-chip Headphone Driver, 1 W Stereo Class D Speaker Driver
Up to 3 stereo Line-in/Microphone interfaces
User Interface

128 x 64 monochrome OLED screen
24 addressable RGB LEDs
30 tactile switches
1 capacitive touch strip
Input & Outputs

1x USB Type-C (Power & Data)
1x 3.5 mm Headphone/Headset
1x 3.5 mm Audio Line-in
1x 3.5 mm MIDI Input (TRS type-A)
1x 3.5 mm MIDI Output (TRS type-A)
Internal microphone
Open Source
PGP-1 is an open hardware project. Right now, you can browse the GitHub repo for the device’s firmware. Later, we will make the schematics available to the public."

VOCODER, 7 bands, analog (with schematic)

video upload by Unrelated Activities

"VOCODER, 7 bands, analog (with schematic).

Thanks for watching."

Thomas Henry VCF-1 State Variable Filter.

video upload by EdEditz

"A test and demonstration of the Thomas Henry VCF-1 State Variable VCF which I built on stripboard. It's an absolutely beautiful sounding filter with three output modes which you can use at the same time. Lowpass, Highpass and Bandpass.
In this test I did not have the 1 Volt per Octave input connected.
You can find full instructions for building this filter (and over 50 other synthesizer DIY projects) for stripboard on my website: https://www.eddybergman.com"

Yamaha DD-8 1992 Drum Machine with Custom Mods

Note: Auction links are affiliate links for which the site may be compensated.
video upload by Canned Sound



via this listing

"Yamaha DD-8 1992 drum machine featuring a 20-point modulation patch bay. The unit also includes a joystick for immediate performance of four additional effects which are also combined on the diagonal axes for further processing options.

Both of these custom modifications unlock an array of original sounds and rhythmic variations; making a single connection on the patch matrix alters the output but applying multiple connections produces an increasingly complex, sometimes aleatoric range of reversed, tonal, bit crushed, flanged, distorted, aliasing and delayed sounds, additional accents, rhythmic patterns and digital noise. Additionally, the five included patch cables can be stacked for further sonic manipulation.

The DD-8 includes a wide range of rhythmic styles, sound effect samples, 9 percussion sets and echo, flam and roll effects.

The patch bay and joystick affect the 100 tempo adjustable onboard rhythms and, depending on the connections, the velocity sensitive drum pads. The 20 different preset drum and percussion sounds can be individually assigned to each pad. The unit functions as normal when the patch bay is not implemented.

Mains (9- 12v DC) and battery powered (6 x AA), features a 1/4" output, no onboard speaker."

Arduino VGM player on ESP32 (SN76489 chiptune) with a moving panorama stereo effect

video upload by Marcel Licence

"In this video you see the VGM player running on the ESP32.
All you hear comes directly from the PCB.
I made the 4 channels of the SN76489 emulation visible on the OLED screen.
In addition to that I tried to create a kind of moving panorama,
to generate a moving stereo separation.
The channels are floating around by changing the left/right volume
and the delay time changes too to simulate the changing distance.

The other features are the same as on the RP2040.

At the end of the video you will find a lot of music examples.

Used VGM files:
- Global Gladiators - 03 - Duelin-Dance.vgm
- Global Gladiators - 02 - Techno Tune.vgm
- Sonic The Hedgehog 2 - 03 - Act Start.vgm
- Sonic The Hedgehog 2 - 04 - Underground Zone.vgm
- Sonic The Hedgehog - 02 - Act Start.vgm
- Sonic The Hedgehog - 03 - Green Hill Zone.vgm
- Lemmings - 21 - Let's Go!.vgm
- Sonic The Hedgehog - 05 - Bridge Zone.vgm
- Sonic The Hedgehog - 06 - Chaos Emerald.vgm
- Sonic The Hedgehog - 08 - Bonus Zone.vgm
- Sonic The Hedgehog - 09 - Labyrinth Zone.vgm
- Sonic The Hedgehog - 10 - Act Complete.vgm
- Sonic The Hedgehog - 11 - Scrap Brain Zone.vgm
- Sonic The Hedgehog - 12 - Sky Base Zone.vgm
- Sonic The Hedgehog - 13 - Boss Theme.vgm
- Sonic The Hedgehog - 16 - Marble Zone (unused).vgm

Files were originally in .vgz format and I renamed them to .vgz, decompress them.
Finally, rename the uncompressed files back to .vgm before I could play them.

---

Projects can be found on GitHub: https://github.com/marcel-licence"

"The Chromed TONTO" - MASSIVE Live Modular Synthesizer w/ P-Thugg from Chromeo

video upload by Anthony Marinelli Music

Like a modern day TONTO - "The Chromed TONTO"

"Discover the unbelievable as Anthony and co-host Rob Rosen, synth tech to the stars, team up with special guest Patrick Gemayel, also known as P-Thugg from electro-funk duo "Chromeo," to unveil and construct the world's largest touring synthesizer - a towering 18 feet long and 8 feet tall, featuring 6 keyboards, all fully CHROMED! Dive into an epic unboxing and building session, culminating in an electrifying improvised synth jam.
In this captivating video, witness the step-by-step assembly of four colossal custom chrome modular synthesizer towers, drawing inspiration from iconic sources like Stevie Wonder’s TONTO synth, 1984 Bang & Olufsen speakers, and Seventies space-age furniture. Crafted and chromed by the legendary Roger Arrick from Synthesizers.com, these towers house cutting-edge modular synths with a unique behind-the-modules patching system, ensuring seamless performances with quick sound changes and full MIDI compatibility for patch cord free audience views.
Delve into the meticulous live performance setup of P-Thugg and his duo mate David Macklovitch (aka Dave 1), showcasing their mastery of Ableton Live and AbleSet for music playback, set lists, and lighting cues. Experience the behind-the-scenes magic as you join the conversation with the funk maestro "P" in his warehouse, where dreams of a chromed synth spectacle turned into reality. Don't miss out on this unforgettable journey into the heart of electro-funk innovation!

00:00:00 Intro (music)
00:00:55 Meet P-Thugg
00:01:11 Building the Modules / Jam 1
00:02:53 The MIDI Keyboards
00:04:53 Building the Tiers / Jam 2
00:06:33 Custom system by Synthesizers.com (https://shop.synthesizers.com)
00:12:15 Custom Tuner Module
00:13:10 Synthesizer Tuner Hack
00:14:10 Modular and Poly Synth Output Configuration
00:15:50 Look Mum, no patch cords - Hard Wired Presets
00:17:34 Culmination of a Modular Dream / Monster Polyphonic Dream Next
00:19:07 Building the MIDI / Jam 3
00:22:44 Fully Built Instrument (after 3 hours setting up)
00:24:05 Preset Patching System
00:29:47 Bypassing the Preset Patches
00:30:21 Switching Presets on Stage
00:33:40 Spontaneously Programming Sounds on Stage
00:34:42 P-Thugg's Favorite Sound
00:35:25 Presets Switch between Live Panel Settings
00:36:39 Re-creating the Album in a Live Setting
00:37:35 Changing The Face Panel
00:40:09 Patching the MIDI Polyphonic Synthesizer Keyboards
00:43:15 Tuning Drifting Oscillators - Custom Tuner Module
00:43:51 Connecting All 4 Modular Instruments
00:45:59 Cleaning the Chrome
00:46:35 MIDI Interface Routing
00:48:47 Moog Modular Flexibility with Minimoog Speed
00:49:14 Front Panel Tour
00:51:20 Overriding the Presets with Patch Cords / Multi-Mode Filter
00:53:34 AbleSet by Leolabs - Set Lists, MIDI Patch Changes, Ableton Live Playback connection (https://ableset.app)
00:56:10 Ableton Light Cues
00:57:02 DAW Software - Cubase, Pro Tools, Ableton Live
00:57:50 Adapting the Show to the Song
00:59:37 Chromeo's Mission
01:01:20 Conclusion
01:01:47 Logo (music)"

preenfm3 #synth #fmsynthesis

video upload by dujazz

VOCODER, seven bands on breadboard #analogsynthesizer #modularsynth #synthesizer #vocoder

video upload by Unrelated Activities

"VOCODER, seven bands on breadboard.

Thanks for watching."

Unrelated Activities is Sbranvlztronics.

DIY Sequencer for the Elektor Formant

video upload by Andreas Remshagen

"More Info and Cirquit:
www.remshagen.eu/Formant/Sequencer.htm

I saw this Sequencer for the Elektor Formant in some Vids in the Net - but i couldn't get the original circuit. So i created an easy circuit that is based on the Baby 10- Sequencer. Its a 555-Clock with a 4017-Counter.
The Sequencer can be driven by an external Clock and it has two Gate and CV-outputs.
I connected the Gate and CV directly with the Formants Gate and KOV inputs. If you don't want to make this internal connection then you can do this via the CV and Gate output Jacks."

Strange Motorised Sound Device

video upload by Pj Tardiveau

"This strange 'Steampunk' device is a motorised noise generator. I made it several years ago and never had a chance to demonstrate it on video. So here it is! ( and sorry for the annoying little sound sequence ) this device combines a low-frequency mechanical oscillator with an analogue delay and various modulation effects."

The top right reads Synth-FX SynTesla Companion. You can check out the SynTesla in previous posts here.

THE CROSFOBERMORDULATOR - DO IT YOURSELF FULL KOSMO SYNTH VOICE

video upload by LOOK MUM NO COMPUTER

"The Crosfobermordulator is now out! Modular Synth Voice
more info here :-
https://www.lookmumnocomputer.com/pro..."

"The Crosfobermordulator is a full synth voice in kosmo format, it was built after sharing a DIY how to video of making a DIY synth voice on breadboard link here, i took that design and i built on it a tad, to make a cross modulating funky synth voice with its own funky quirks, its not a do all synth voice! but it sure is funky. with 2 oscillators (one primary oscillator and a modulation oscillator that can also be a second oscillator, or even both at the same time, 1 low pass funky distorting harmonic filter, noise, 2 envelope generators and a voltage controlled depth of modulation which really opens up to some funky sounds!"

"A World of Heritage" (Heritage Modular Synthesizers) - 8 Voice Digital Modular Synth

video upload by

"Présentation of the prototype 'HERITAGE SYNTHESIZERS' from Frédéric Rible.
Digital modular 8 voices synthesizer with complete legacy analog interface & analog like sound!
All sounds and effects are made by the Heritage Synthesizers in 6 lives sessions.
Sounds created by Frederic & kurtz.
Up left camera : Heritage Modular main stéréo sequence live work / Keystep pro Arturia.
Down left camera : Mister M across Heritage modular filter, "PPG like" pads & effects & Bigbass end line
Up Right Camera : Heritage Modular second stéréo sequence rythm noises, strings like pad, bass line.
Down Right camera : 'Inside' the Heritage, first Triangle solo , second Formant solo and big analog end pad.
Track by Jean-Luc Briançon.
Links :
https://www.heritagesynthesizers.fr/
https://kurtzmindfields.bandcamp.com/
Title will be availble on Bandcamp april 2024 on new EP."



"The Heritage Modular synthesizer has been designed to mimic the typical look and feel of an early 1970s modular synthesizer but with full polyphonic capabilities. The feasibility is tightly linked to the usage of digital technologies available in 2020 to DIY enthusiasts.

From a musician perspective, the system should provide the illusion of using a classical analog modular synthesizer with knobs, switches and patch cables.

The core of the synthesizer is based on Pure Data: a powerful sound engine for the generation and processing of audio signal. The underlying algorithms has been chosen for faithful emulation of analog circuitry characteristics. As the goal is to provide with hardware user experience, the Pure Data GUI is only used during the software development phase.

A dedicated set of hardware modules has been designed to act as controllers for Pure Data. These modules are populated with knobs, switches, lights and jack sockets, as for any other classical modular synthesizer. The communication between Pure Data and these hardware modules is done via an I2C bus implemented over a standard 16-pin Eurorack connector.

This project has started in July 2020 as a DIY effort, with a first version up and running in July 2022."

Arduino VGM player with rough SN76489 emulation - sneak peak of a video game music chiptune project

video upload by Marcel Licence

"Similar to the previous project I wanted to implement the playback of a new file format.
In this project VGM files are played on different platforms (decompressed VGZ files).
To get any audio I've implemented a very rough emulation of the SN76489 sound chip.
It has three square wave outputs and a noise channel.
The noise channel does not completely work as intended yet.
You might hear some deviations to the expected audio of the video game music.
This project is implemented in Arduino.
After adding some more features I will make this project available soon.


Used VGM files:
- Sonic the Hedgehog 2 - 07 - Sky High Zone.vgm
- Global Gladiators - 02 - Techno Tune.vgz
- Global Gladiators - 03 - Duelin-Dance.vgz
- Global Gladiators - 04 - Dance Tune.vgz
- Lemmings - 01 - Title screen.vgm
- Lemmings - 02 - Can-Can.vgm
- Lemmings - 03 - Levels 2 & 19.vgm
- Lemmings - 04 - Levels 3 & 20.vgm
- Lemmings - 05 - Levels 4 & 21.vgm

Files were originally in .vgz format and I renamed them to .vgz, decompressed them
and finally renamed the uncompressed files back to .vgm before I could play them.

---

Projects can be found on GitHub: https://github.com/marcel-licence
Instagram: https://www.instagram.com/marcel_lice...
Twitter: https://twitter.com/MarcelLicence
Discord: https://discord.gg/yT8bQdZE (if the link doesn't work please check the description of the latest video)
Mail: mailto:marcel.licence.o@gmail.com

---
Intro, Raspberry Pi Pico via PWM: (0:00)
ESP32 playback via audio codec: (2:37)
ESP8266 test output via PWM: (3:27)
ESP32-S2 using I2S DOUT alone: (4:17)"

Love Hultén Upright synth setup, RYK Vector Wave

video upload by Love Hultén

"Another recent upright setup incl RYK vector wave, Solina string ensemble, tape echo, Pico DSP and built-in speakers 👽 Made from Oak"

monOB-X Sequenced by Make Noise 0-Ctrl

video upload by Polydata

"Oberheim OB-X voice card with PWM being modulated by the 0-Coast."

Erica EDU Kick and Hats! - Build and Demo

video upload by

"Hey! Finally back with some Synth DIY Action! These new Erica Synths and Moritz Klein .EDU modules expand the original system with amazing and powerful percussion sounds! In this video we build both kits and then take them for a groovy spin, come on in!

Stay Noisy!

Index:
INTRO 00:00
Hi Hat Build 01:00
Kick Build 04:31
Demo 06:38
Outro 16:49"

Neutral Labs Elmyra 2, a 4 voice polyphonic semi modular synth, now has a white faceplate

video upload by Floyd Steinberg

"In this video, I build the new pale-faced Neutral Labs @nyppy Elmyra 2 and take it for a test drive with my MPC One acting as a sequencer. See https://neutral-labs.com/elmyra2

This is a 4 voice polyphonic semi modular synth advertised for "microtonal exploration", but it can also be used chromatically if you so choose, as demonstrated in this video. Table of contents:

00:00 intro
00:10 hi
00:27 building the synth
05:45 MPC setup
06:08 short improvisation (with explanations)
11:05 bye-bye

HÄLP ZIS CHANNEL

/ floyd_steinberg
https://floydsteinberg.gumroad.com/
https://floydsteinberg.bandcamp.com/"

Studio/Lab Update - Ushering in a New Era with In-House Production Automation

video upload by gstormelectro

"Audio + Video by G-Storm Electro c. 2024

Really excited to share this big change in the way I'm producing Eurorack modules. Last week I took delivery of a desktop SMT Pick-and-Place machine. It's an assembly robot that will help me greatly, in lieu of stuffing hundreds of boards a year all by hand using tweezers. Having spent almost a week getting up to speed I'm happy to share my thoughts about my foray with in-house production automation.

Full disclosure | This video was not sponsored by any equipment manufacturers. This machine was bought and paid for out-of-pocket for business use. All observations and opinions are my own.

Check my sweet Reverb store for module availability.
https://reverb.com/shop/gstormelectro"