Showing posts with label DIY. Show all posts
Showing posts with label DIY. Show all posts
Sunday, July 26, 2026
Hermetic Modular - Launch Announcement - New Open Source Eurorack Manufacture
video upload by Hermetic Modular
"Introducing a new modular synthesis company. Shipping early July.
Hermeticmodular.com
Open source!
Thank you to Victory Nguyen for performing, Justin Benjamin for the good camera work (all bad camera work should be attributed to me), and Greg Dixon for some of the excellent sound design demos."
How do you test 36,700 LEDs?
video upload by Hermetic Modular
"Run a burn in test! Enjoy 10 minutes of the uninterrupted test - an important step in the QA process. This runs for a minimum of five hours per board.
Proper eurorack LED ring pot feedback.
And all 3060 of these LEDs pictured passed :)
Music credit to @adamwonak on IG - "abstract" from 202606 on Bandcamp now."
ECHOA STEREO DUAL DELAY AND REVERB PROCESSOR
Four delay lines total — two per stereo channel. Morph delay into reverb from first principles, from clean digital delay to smeared, textured reflections. Route the four lines in series, parallel, isolation, or spectrally. Presets, parameter lock on every pot, character engines, and more.
TIME
Delay time from 1 ms to 16 seconds, up to four taps per delay line, configurable for your sound design. Feedback up to and past unity, and a dry/wet mix per channel. Freeze delay buffers, set tempo with tap on the line buttons, or patch a clock and lock each line to a musical division. Linear or logarithmic time taper options: a full featured, clean delay line.
SPACE
Bend echoes into reverb. Diffusion sweeps a four-stage Schroeder all-pass network from discrete repeats to a wash. Bloom grows short, fixed loops into long modulated plate and hall tails. Damping is bipolar from noon — counter-clockwise darkens the tail, clockwise thins and brightens it.
ENGINE
Degrade each line's voice across with four engines — digital, BBD, tape, vinyl. Saturation, bandwidth limiting, compander, wow and flutter, hiss, crackle, digital glitches. Depth scales from bit-pristine bypass, to a gentle touch of character, to destruction.
CONFIGURABLE FOR PERFORMANCE ROUTING
Parallel, series, mono, or spectral delay-line topologies.
CV MAPPING
Per-CV destination, with attenuverters on every input.
See dealers on the right for pricing and availability on gear.
LABELS/MORE: DIY, Hermetic Modular, New Makers, New Modules, News
LABELS/MORE: DIY, Hermetic Modular, New Makers, New Modules, News
Minitron synth (Mellotron+Minilogue)
video upload by Love Hultén
"Commission piece incl Mellotron M4000D, Korg Minilogue, Microcosm, Chroma Console and a custom tape echo. In the video I’m using the Mellotron as lead over a Minilogue seq, but the synths can also be played simultaneously for joined voices"
See the Love Hulton label below for additional creations.
Please steal this FM synthesizer UI idea (ESP32-P4 DIY FM synth)
video upload by Floyd Steinberg
"I built a simple 4 operator FM synthesizer using Elecrow's 10.1 ESP32-P4 smart screen ( https://tidd.ly/4yIlbuX ). Nothing groundbreaking, but I want to show you an UI idea I had, and if you're convinced, please start using it in your FM synths.
00:00 hi, what's this?
01:03 ESP32-P4 panel features
02.47 How to install ESP-IDF 5.4.4 in Visual Studio Code
04:29 A problem with common FM synthesizers
06:13 Reminder: FM principles
06:43 My UI idea
08:22 Sound demo
09:10 Conclusion
Thanks, www.elecrow.com
HÄLP ZIS CHANNEL
https://www.patreon.com/floyd_steinberg
https://floydsteinberg.gumroad.com/
https://floydsteinberg.bandcamp.com/"
This 4HP Eurorack Module Just Got INSANE
video upload by wgd modular
⏱️ Chapters
00:00 – Intro
00:14 – What happened since the last video? [embed below]
00:54 – New panels
01:17 – Fixing the noise problem
01:50 – Melon in live performances
02:03 – Firmware flashing infrastructure
02:32 – Updates to existing firmwares
03:08 – New firmwares
03:18 – Metal Hit
04:14 – RALPS
04:50 – Reese Bass
05:29 – Drums
06:26 – fxloperformer
07:29 – Final thoughts
"In this video, I’m taking a look at what has happened to melon since my last video. My 4HP Eurorack adaption of Hagiwo’s amazing RP2350-based MOD2 has grown quite a bit since then, with new panels, new firmware, community contributions, and improvements to the overall infrastructure.
Saturday, July 25, 2026
ESP32-S3 Synth project - Sound Demo
video upload by Bad Dog Designs
"This clip shows some of the range of sounds the synth produces. The Architecture is natively stereo, so put your headphones on!
I've added patch recall and storage via SD card, and got the arpeggiator running, so some of the sounds in the clip are just the arpeggiator, and I then adjust gate length / release / frequency etc.
Got a couple of little bugs to work on, but I'm pretty pleased with how it's progressed to date! Hope you enjoy the sounds :)"
Thursday, July 23, 2026
New Enclosures for MidiVolts Desktop and Poly Sequencer!
video upload by Space Brain Circuits
"MidiVolts Desktop:
https://spacebraincircuits.com/pages/...
Poly Sequencer:
https://spacebraincircuits.com/pages/...
Upgraded Sheet Metal Enclosures:
https://spacebraincircuits.com/produc..."
See dealers on the right for pricing and availability on gear.
LABELS/MORE: DIY, Space Brain Circuits
LABELS/MORE: DIY, Space Brain Circuits
BCR PRESENTS THE KIDS WANT TECHNO W/ GHOST IN TRANSLATION
See dealers on the right for pricing and availability on gear.
LABELS/MORE: DIY, Ghost In Translation, MATRIXSYNTH Members
LABELS/MORE: DIY, Ghost In Translation, MATRIXSYNTH Members
Dutch STEIM Zwarte Dozen Systeem - Sound Demo with Novanex Delay.
video upload by Acid Solder Club
"Short jam of patching with the rare Dutch modular synth system that started out around 1974 within the STEIM Studio for Electro-Instrumental music.
Since 2022 Veerle (Elektortek) got her hands one this system, in total consisting out of 4 rows of "cassettes"/modules (34 total modules, 4x patch matrices). It needs quite some servicing and repair, but als a lot of cassettes survived the forces of time.
Since last year the system is based at Acid Solder Club Utrecht, Veerle's creative electronics/ DIY and synth workshop and experimental sound studio based in Utrecht, the Netherlands. Together with a small team (herself, Rob vd Poel and Sybren Danz) we are searching for documentation, video materials, schematics and all kinds of doodled and sketched info, that most unfortunately, is lost in time.
We are currently also working on a digital archive with stories, patch ideas, a new service manual and repair blog.The process is slow, since a lot of information is lost and we are looking at similar circuits at the time, and digital and book references to help the build.
Follow Acid Solder Club insta and socials for quick updates!
@acidsolderclub
/ acidsolderclub
No post processing anything, and also no filter (yet, in service) or envelopes so it was quite challenging and not really all volume levelled out and such but meh, that's not the point of this video :)
Casettes used in this patch:
V.C Quadrature Oscillator
3x VCO/LFO
ProductModulator
Dual amplifier divider
Inverter
Dual VCA
2x Matrix patchpanels
NOVANEX Sound Shifter SS12000.
that was in the workspace for servicing for the Re:vive Studio, based inside the Instituut of Image and Sound in Hilversum.
https://revivethis.org
https://www.beeldengeluid.nl"
See dealers on the right for pricing and availability on gear.
LABELS/MORE: DIY, exclusive, exclusive2026, STEIM
LABELS/MORE: DIY, exclusive, exclusive2026, STEIM
He Made A DRUM MACHINE From An Old Organ Found In The Trash!
video upload by THIS MUSEUM IS (NOT) OBSOLETE
"Veerle (Acid Solder Club) shows us some cool things she brought to the museum."
Longer drum video:
From STINKY Electronic Organ To HARDCORE Drumcomputer!
video upload by Acid Solder Club
"Episode 1 where we disassemble 2 electronic organs the Riha107 and Riha730, both were in bad condition and ready to end up on a landfill.
This video is about taking them apart, finding useful elements and pcb's and build it into a new electronic hardcore drumcomputer that you can build at home too!
Part of a multiple episode series, and checkout the video at THIS MUSEUMS (NOT) Obsolete as well where we tryout one of the organ salvaged drumcomputers in the museum together with Mitch!"
Previously:
Re-using parts of organs for rhythm machines - first test and explorations
video upload by Acid Solder Club
"This is a first test and tryout for looking at possibilities of re-using printed circuit boards of old organs that are no longer usable and re-casing them in new ways.
In this video I've swooped the inside of a KAWAI organ donated by Vincent /Vinnieragua out of the dust, and triggering the sounds of the drummachine board with triggers from modular synthesiser module the "Turing Machine" by Music Thing Modular.
This is a first pilot and proof of concept in a series of follow up projects of re-using organs that are no longer serviceable either due to poor conditions, lost knowledge or other reasons."
Tuesday, July 21, 2026
Direct Cut dos bons
Monday, July 20, 2026
EMS 256 Sequencer Repair Part 2 Re-Cap circuit cards and devising a plan.
video upload by Really Nice Audio
Really Nice Audio EMS 256 Sequencer posts
"What is the likelihood due you think I will get this sequencer fully functional? I am now able to see the memory fill up when using a key input. The hardest thing for me to work out was a strategy for the repair. Considering how old this unit is will I find many broken logic IC's?
It is hoping to play some music in September, let me know your thoughts below.
https://paymentportal.uwl.ac.uk/confe...
This is part of the Pete Townshend Synth Collection at the University Of West London
https://www.uwl.ac.uk/study/study-fac..."
See dealers on the right for pricing and availability on gear.
LABELS/MORE: DIY, EMS, synth guts, Synth Techs
LABELS/MORE: DIY, EMS, synth guts, Synth Techs
Sunday, July 19, 2026
KiCad in 5 minutes: Designing an SMD PCB for my $30 chord sequencer + firmware updates
video upload by Floyd Steinberg
"I finally learned KiCad and with the help of PCB Way https://www.pcbway.com/activity/anniv... or https://pcbway.com/g/4nkLCf , I created an SMD PCB for my $30 chord sequencer, and I added all the features you asked for after the last video on this project. Table of contents:
00:00 short demo
00:07 hello, what's this?
00:58 KiCad design quick walkthough
05:04 a parcel from PCB Way!
06:36 creating some JST adapter cables
07:04 my thoughts on the whole process, and some advice (read those spec sheets!)
08:36 Quick overview: Analyzing chords and using suggested chords
09:43 chord complexity selection
10:05 passing chords
10:43 santanic chords
11:34 rolling chords
12:07 reacting to velocity
12:29 bass: root note
12:44 bass: key root note
13:04 swipe menus
13:23 sending CC data with the ring
14:04 arpeggiator
14:48 user arpeggiator patterns
16:08 chord sequencer + auto chord progression
17:07 multitimbral multitrack demo (Montage M)
17:57 conclusion and where to get
HÄLP ZIS CHANNEL
https://www.patreon.com/floyd_steinberg
https://floydsteinberg.gumroad.com/
https://floydsteinberg.bandcamp.com/"
Previously:
This $30 chord sequencer adds more Gospel to your music #synth #midicontroller
video upload by Floyd Steinberg
"I built a nifty little MIDI device that might help you find some interesting new chord progressions. This runs on a 1.28" CrowPanel by ELECROW ( https://tidd.ly/49pImPW , or the new 1.46" version https://tidd.ly/4u51ZEi ) for roughly $30. Table of contents:
00:00 hi, what's this? + quick demo
00:40 sponsored by ELECROW
01:05 hardware needed
02:01 Yes, I came up with the firmware, but that's not important here
02:44 you'll need an external sound source #synthesizer and set it to local mode
03:15 you can play on the device itself or on a midi keyboard
03:28 basic usage
03:49 emotional chords!
04:41 ... or not
05:05 chord analyzer
05:52 passing chords
06:33 bass (chord root + key root)
07:23 this channel needs you support
07:48 trigger key changes (some music theory)
09:15 functional chords, related keys and chromatic/altered chords
09:53 chord sequencer
10:44 flip the screen
11:13 disarm the passing chord function
11:19 some interesting details (automatic voicing, slightly random velocity and more)
12:19 playing "chord melodies" and throwing some "emotional chords" in (proof of practicability)
12:45 using the device to create chord progressions in other sequencers
13:02 a short improvisation (left hand: chord machine, right hand: keyboard)
14:16 conclusion, and some more ideas (and why I need your help)"
See dealers on the right for pricing and availability on gear.
LABELS/MORE: DIY, Floyd Steinberg, MATRIXSYNTH Members, New Makers
LABELS/MORE: DIY, Floyd Steinberg, MATRIXSYNTH Members, New Makers
Jeannie2 - Wavetables
video upload by Rolf Degen
"Jeannie 2 - Polyphonic DIY Synthesizer & Sampler
Part - Wavetables
Diy blog: https://www.sequencer.de/synthesizer/..."
Saturday, July 18, 2026
ESP32 Monster Synth - Further testing
video upload by Bad Dog Designs
"Apologies for the poor sound quality - just recorded with my phone.
The synth is pretty well complete as a prototype - 6 oscillators, Routing matrix, Patch / wavetable loading and storage.
Working on the Arpeggiator code next"
Thursday, July 16, 2026
Two Oscillators - Super Saws | Low-gain Electronics - 4U Serge Modular
video upload by LowgainElectronics
"Two oscillators, 4 waveforms, dual processors. Fat super saws!
Just showing some raw waveform potential on the Voice of Reason II system panel
www.low-gain.com"
Stereoping Inputs/outputs sticker for Moog® Matriarch™ - how to apply it
video upload by Stereoping
"Stereoping offers a helpful sticker for the Moog® Matriarch™. Instantly identify the function of all the backside-jacks without having to run around your synth. Here is how to apply the sticker which you get in our shop.
Full track of background music:"
C4PAM / 25-02-20 / gotIt Pling
video upload by C4PAM
"got it?
Pling"
See dealers on the right for pricing and availability on gear.
LABELS/MORE: custom, DIY, MOOG, STEREOPING
LABELS/MORE: custom, DIY, MOOG, STEREOPING
Tuesday, July 14, 2026
Rare Bob Moog autographed Moog MiniMoog Model D w/ Mods
Note: links to listings are affiliate links for which the site may be compensated.
via this Reverb listing
"I purchased it brand new in 1981. It is my baby…
In 1984, I had it modified by Boston tech Ron Rivera. Updates included a fourth LFO, individual sync switches for oscs 2 and 3, military Vernier tuning knobs add tuning stability and are 40:1 in Normal mode and 1:1 when pushed, and (the best one) the ability to individually switch the filter envelope to control pitch, filter or both on oscs 2 and 3.
In 1987, while working at Kurzweil in Waltham MA with Bob Moog, I talked him into autographing it for me.
In the mid-90s, synth tech extraordinaire Kevin Lightner (RIP) cleaned it up and put a green light on the main power switch.
In 2020, the amazing Ken Rich totally cleaned it up inside and out.
This instrument comes with a ATA flight case, and I will also include a Kenton Pro Solo Mk II CV to MIDI converter."
via this Reverb listing
"I purchased it brand new in 1981. It is my baby…
In 1984, I had it modified by Boston tech Ron Rivera. Updates included a fourth LFO, individual sync switches for oscs 2 and 3, military Vernier tuning knobs add tuning stability and are 40:1 in Normal mode and 1:1 when pushed, and (the best one) the ability to individually switch the filter envelope to control pitch, filter or both on oscs 2 and 3.
In 1987, while working at Kurzweil in Waltham MA with Bob Moog, I talked him into autographing it for me.
In the mid-90s, synth tech extraordinaire Kevin Lightner (RIP) cleaned it up and put a green light on the main power switch.
In 2020, the amazing Ken Rich totally cleaned it up inside and out.
This instrument comes with a ATA flight case, and I will also include a Kenton Pro Solo Mk II CV to MIDI converter."
Sunday, July 12, 2026
He turned his synth into a sampler - GuitarML Adruino Based DIY "TouchedOut Synth"
video upload by GuitarML
"*OPEN SOURCE* https://github.com/GuitarML/TouchedOu...
Demo of the Touched Out Sampler, which is a mod to my TouchedOut Synth. It adds a MAX4466 microphone to transform it into a chromatic sampler! The new code is open source under the 'sampler' branch of the TouchedOutSynth. The mod requires two 100uF capacitors and a 100 ohm resistor, along with the microphone. The Sampler is separate firmware, but repurposes the controls for recording and trimming samples, and looping."
Previously:
I Designed a Synth using Daisy and Arduino! KiCad PCB and Code Walkthrough
video upload by GuitarML
"Demo of my latest creation, a polyphonic touch synthesizer. Audio demo song, followed by overview of the synth, design process, Kicad PCB schematic and layout, and code walkthrough. I used the Arduino IDE with DaisyDuino to program the Daisy Seed along with MPR121 capacitive touch modules.
Now open source: https://github.com/GuitarML/TouchedOu...
0:00 - Intro Song
4:05 - TouchedOut Synth Overview and Controls
8:18 - Design prototypes
11:02 - Kicad PCB Schematic
12:56 - Kicad PCB Board Layout
16:43 - Code Walkthrough in Arduino IDE
25:20 - Outro
Patreon:
/ guitarml
Visit my website for more from GuitarML:
https://guitarml.com/"
Radiohead and Björk on a homemade synth
See dealers on the right for pricing and availability on gear.
LABELS/MORE: Arduino, DIY, GuitarML, New DIY, New Makers, New Synths, News
LABELS/MORE: Arduino, DIY, GuitarML, New DIY, New Makers, New Synths, News
12 voice polysynth latest iteration
video upload by Craig Barnes
"After finishing the second voice board and debugging the filter issues with the first board I've now connected everything up into a 12 voice configuration for more testing and fixing of bugs."
Thursday, July 09, 2026
KORG Introduces NTS-4 Compact Performance Mixer Kit for Hardware Setups
Overview video upload by KORG
"The NTS-4 is a compact performance mixer kit designed for modern hardware setups. With six channels (two mono and four stereo), built-in effects, USB-C connectivity, and support for up to 10 audio signals, the NTS-4 makes it easy to bring together volca units, NTS instruments, modular gear, grooveboxes, and desktop synths into one streamlined setup.
In this overview, Fess Grandiose walks through the NTS-4’s flexible channel architecture, Eurorack-compatible mono inputs, dual stereo effects engines, per-channel CUE and MUTE controls, USB-C audio and MIDI connectivity, and the hands-on Nu:Tekt DIY assembly experience.
Features:
• Compact 6-channel performance mixer
• 2 mono + 4 stereo 3.5 mm channels
• Supports up to 10 audio signals
• Eurorack-compatible mono inputs
• Standard 1/4" main outputs
• Per-channel CUE, MUTE, and FX send
• Dual stereo effects engines
• SEND FX + TOTAL FX processing
• Stereo send/return loop
• USB-C audio + MIDI
• Record directly to computers & mobile devices
• Rugged steel chassis
• Nu:Tekt DIY kit assembly
Learn more about the NTS-4: https://bit.ly/4w0QxLQ"
And a user video from supporting member Knobs & Switches:
KORG NTS-4 Performance Mixer Kit
video upload by Knobs & Switches
"Here is my review about the new Korg NTS-4 Performance Mixer Kit together with loads of other Korg gear: MS20m, Drumlogue, SQ-1, 700Sm, Harmonic Distortion, Opsix, Sigma, Minipops-7, ISE-NIN Single Voice, Ryk M185 Sequencer and of course the NTS-4. The Nu:Tekt Mixer will be released today! Have fun
https://www.korg.com/de/
For Pedal Power i used the MyVolts CrazyChain MkII: https://myvolts.com/CrazyChainMKII/?a...
The fancy Audio Cables are the MyVolts Candycords: https://myvolts.com/CandyCords/?a=kas
CV and Clock Cables are MyVolts Halos: https://myvolts.de/Halo/?a=kas
00:00:00 Intro
00:00:037 Title Track (only the NTS-4’s FX were used)
00:03:04 Epilogue
00:04:41 NTS-4 Run Down
00:08:58 NTS-4 Send FX
00:14:56 NTS-4 Send/Return
00:15:58 NTS-4 Total FX
00:21:19 Conclusion
00:22:47 Outro (only the NTS-4’s FX were used)
Used Equipment: Apple iPhone 14 Pro Max, Apple iPhone 12, Sony ZV-1, Rode Wireless ME, Universal Audio Apollo Twin Solo, Yamaha MG-06, Steinberg Cubase 15 and Final Cut Pro X"
A compact performance mixer for modern hardware setups
Build the perfect bridge for your music. The NTS-4 brings the flexibility of the Nu:Tekt series to a compact performance mixer kit designed for today’s hardware setups. With six channels (two mono and four stereo minijacks), built-in effects, and USB connectivity, the NTS-4 makes it easy to mix and perform with volca units, NTS instruments, modular gear, and other desktop synths in one place, supporting up to 10 audio signals in a single setup.
From the integrated effects to the steel chassis, every part of the NTS-4 is designed to turn your collection of instruments and gadgets into a professional-grade creative hub.
Small Footprint. Massive Control.
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
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MATRIXSYNTH - EVERYTHING SYNTH
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH


























