Playing around with the CircuitPython Drum Machine

video upload by ReLiC

"I was having too much fun while testing my software...

Hardware: https://github.com/todbot/synthiota
Firmware: https://github.com/relic-se/CircuitPy..."

Defect Processor Buchla 289

video upload by Memetune Studio

"A few months ago I managed to snag a Defect Processor Model 289 made by Alex Pleninger (Keen Association) and Roman F

This hyper-rare module adds some appropriately bonkers digital FX to the Buchla 200 series system, by using two independent stereo digital effects units based around the rather interesting Spin Chip platform (it has two of them inside)

The module takes any audio signal and subjects it to various Spin Chip algorithms - there are 8 per section, and they are pre-set on EPROMS on the board behind the panel. The good news is you can swap out the EPROMS and change the 16 algorithms if you so desire, and you can even create your own if you get the Spin Chip programmer

I have a set that includes this insane delay patch. The module has CV inputs for some of the parameters (not many Spin-based products have this facility AFAIK) but here I am playing around with the delay times and feedback levels by hand

I’m also tweaking the 259 timbre, the LPG decay time, and the mix between Noise and VCO, and the Bandpass filter

Crazy sounds and defects abound!"

GreyScale-KOSMOS&PRA32U #kosmos #pra32u #raspberrypipico #rp2040 #generative #sequencer

video upload by plantssystem

"‪@plantssystem-ufo‬ KOSMOS New in v1.1.0
PRA32-U Sound Engine Integration (Core1)
Powered by ISGK Instruments PRA32-U
The PRA32-U synthesizer engine is now embedded directly into KOSMOS.
Core0 runs the KOSMOS generative sequencer.
Core1 runs the PRA32-U sound engine.
KOSMOS can now output audio on its own, without relying on external MIDI devices.
This is the largest functional upgrade since the project began."

https://github.com/plantssystem/KOSMOS/tree/pra32u-core1-integration?tab=readme-ov-file

See the ISGK and GreyScale labels below for additional corresponding posts.

?Gitaar & ?TR606 & RC500

video upload by Gijs Gieskes

https://gieskes.nl/instruments/?file=...
https://gieskes.nl/instruments/?file=...

00:00 ..
02:17 The cassette player
02:34 ..
04:34 Drums and Guitar with distortion
07:03 I gave you my song

CLICK FOR MORE »

19-Channel Analog Stereo Vocoder and Formant System

video upload by Martin Jan Köhler

See the Hoerold label below for additional posts featuring the Hoerold vocoder.

Oberheim Matrix 1000 Clone Test (Voice 2 issue)

video upload by Martin Jan Köhler

synthiota CircuitPython Drone Synthesizer Demonstration

video upload by ReLiC

"Full demonstration of the synthiota Drone. 8 Oscillators, 3 LFOs, effects, and more!

Hardware: https://github.com/todbot/synthiota
Software: https://github.com/relic-se/CircuitPy...
CircuitPython: https://circuitpython.org/

Libraries:
https://circuitpython-synthvoice.read...
https://circuitpython-synthiota.readt...
https://circuitpython-waveform.readth..."

Also see "tbish" update on "synthiota" board

CircuitPython Drone Synthesizer Demo on synthiota

video upload by ReLiC

"8-voice drone synthesizer written in CircuitPython for the Synthiota."

Software: https://github.com/relic-se/CircuitPy...
Hardware: https://github.com/todbot/synthiota

Turing Machine, Workshop System & Planet of the Apes! // Music Thing Modular at Machina Bristronica

video upload by DivKid

"It's a pleasure to look back at the last Machina Bristronica event (2025) and share this video with Tom Whitwell of Music Thing Modular from the DivKid Discussions stage. We talk about origins, Thonk acting like a record label, Turing Machines, Radio Music and the Workshop System which has inspired and built community and created collaborations, before rounding out on some unexpected connections to Planet of the Apes!

Machina Bristronica is taking a year off for 2026, but will be back in 2027. Check out videos from the DivKid Discussions stage, Machina news and updates and all about Music Thing Modular at the links.

CLICK FOR MORE »

Sunbeam Quad Oscillator [Toaster]

video upload by Tim Kaiser

KOSMOS – A Generative MIDI Sequencer for RP2040 (DIY Project)

You might recall KOSMOS from previous posts here. Plantssystem aka GreyScale wrote in to let us know the source code has been released. Details and link to the github repository follow.

"KOSMOS is a compact, self‑contained generative MIDI sequencer built on the Raspberry Pi Pico (RP2040).

Power it on, and it immediately begins producing evolving melodic patterns — no DAW, no clock source, no setup.

The project combines a Euclidean rhythm engine, Japanese‑mode melodic generation (Hirajoshi / Insen / Miyakobushi),
and a 240×240 LCD UI for real‑time visualization of steps, probabilities, and phrase movement.

A small instrument with a surprisingly expressive voice.

---

CLICK FOR MORE »

Roland JX-70 / JX-10 rack mount note to LED addition

video upload by Craig Barnes

"I had finished this project, but originally the 16 patch and bank buttons were dual LEDs. Today I started to replace them with blanks and thought, what if I leave patch buttons 1-6 as dual LEDs and add a simple processor to intercept the serial Comms between the assigner board and the voice boards. Effectively creating a midi to trigger to display the notes as LEDs."

DIY Synthesizer Live Generation

video upload by KellerDev

"Generative sequence on DIY eurorack synth"

The Genius Behind Look Mum No Computer - Eurovision 2026

video upload by Britclip

"Electronic artist & YouTuber: Sam posts videos about building unique audio gear and synthesizers, alongside original music and performances. He launched his channel in 2016 after previously fronting the indie band ZIBRA.

⚙️ DIY synth wizard: He’s known for creating unusual and inventive electronic musical devices using vintage technology — including a Furby-based organ, synthesizer bicycles, Game Boy oscillators, and more — that have gained millions of views online.

🏛️ Museum founder: Sam also runs This Museum Is Not Obsolete, a space in Ramsgate, Kent (England) that showcases quirky analog tech repurposed in playful and musical ways.

🎤 Eurovision entrant: In 2026, he was selected to represent the United Kingdom at the Eurovision Song Contest under his Look Mum No Computer name — a high-profile recognition of his creativity and performance style.

In short, Sam Battle is a creative, experimental electronic musician whose blend of DIY tech, performance, and humour has built a strong global following.

#eurovision #music #synthpop #eurovisionsongcontest"

LOOK MUM NO COMPUTER - Eins, Zwei, Drei | United Kingdom 🇬🇧 | Official Music Video | #Eurovision2026

video upload by Eurovision Song Contest

LOOK MUM NO COMPUTER will represent United Kingdom at the Eurovision Song Contest with the song Eins, Zwei, Drei 🇬🇧

Credits:

Look Mum No Computer: Sam Battle
Director: Johnny Goddard (Youth Hymns)
Production Company: A Running Commentary

CLICK FOR MORE »

Groovesizer MYNAH - Teaser

video upload by MoShang

"The MYNAH is a compact, DIY sampler that lets you record, chop, and perform your sounds anywhere.

Mynah is a compact, 6-voice polyphonic sampler you build yourself, powered by an ESP32 microcontroller and designed for musicians and sound explorers who want a truly tactile creative tool. Behind its approachable looks, Mynah hides a deep feature set including a 16-step sequencer, real-time and momentary effects like delay, reverb, filter, stutter, gate, and bit crusher. Mynah features dual audio inputs for recording from a microphone or line-in source. Samples are stored on SD card and loaded into RAM, giving you up to 16 samples per song and over two minutes of total sample capacity. Whether you’re programming beats, shaping textures, or performing live, Mynah puts serious sampling power in the palm of your hand.

Mynah‘s 16-bit, 32kHz ADPCM audio engine delivers the crunchy, characterful sound of classic samplers, while a companion web-based tool keeps your workflow modern and efficient. Manage your samples and songs, and export high-quality stems — all from your browser."

You can find more info at https://groovesizer.com/

LFO Death Synth

video upload by Tim Kaiser

MOD3 × Ferrofluid | DIY eurorack modular synth Actuator Driver

video upload by HAGIWO

"MOD3 is an open-source, multi-purpose actuator driver.
I use MOD3 to drive an electromagnet to control ferrofluid.
It is synchronized with the kick trigger signal.

working documents
https://note.com/solder_state/n/n160f...

PCB gerber data & PCB assy production data Download
https://www.patreon.com/posts/mod3-ge..."

LRB303 5Mar26

video upload by Michigan Synth Works

"LRB-303 New 2026 DIY Kit available 15 Mar 2026"

Introducing Luna: A Lunetta style groovebox & eurorack synth module

video upload by mylarmelodies

Check with dealers on the right on pricing and availability.

"This is your official introduction to the Neutral Labs Luna - a new lunetta-style “groovebox” desktop & eurorack compatible synth. It’s patch programmable, letting you both create tones and rhythms from 5 oscillators (2 with step sequencers inside), logic and pattern generators, all at the same time. Three 'LPG's take the raw tones and let you gate and filter them. 13 effects in 2 blocks effect and shape sounds further.

Enormous thanks to Martin at Neutral Labs for commissioning me to make a vid of this. The world needs more shift registers. Note: I used my own red Tiptop Audio Stackcables in the video, but the desktop module comes with 12 braided patch cables."

Neutral Labs Luna – the first serious Lunetta synthesizer

video upload by nyppy

"Available as a DIY kit or assembled desktop synth or 42 HP Eurorack module.

Video by the amazing ‪ / ginko.ltd

#synthesizer #eurorack #diy"

Update:

What's a Lunetta synthesizer and why should you care? // LUNA from Neutral Labs

video upload by DivKid

"Join us for an exploration of what Lunetta Synthesizers are, what the new Luna from Neutral Labs is and why you should care.

The short answer is that it’s an interesting series of raw digital building blocks from a sonic sculptor (Stanley Lunetta) with lots of modern quality of life features that allow you to approach timbre as rhythm, rhythm as timbre then round that out with low pass gates and FX.

More info at https://neutral-labs.com"

*TIMING INDEX // CHAPTERS*

INTRO
00:00 Hello & previews
02:13 What is a Lunetta synthesizer?
02:54 What is Luna?
04:07 Luna feature run down
06:14 How this video is a bit different

PATCHES & SOUNDS
07:05 Comb filter drones for dark industrial soundtracks
07:55 Hypnotic drones & dual oscillator lead lines
11:20 Bouncing bass & low end swells
11:55 New rhythms from AND & XOR logic
16:05 Fireside crackles & sputtering motorbike engines
16:35 Characterful lo fi LPGs & FX for modular synth voices
19:04 Ambient gritty echoes for happy synth blips
19:29 Shift register rhythms - gate delayed musical canons for your rhythms
23:25 Metallic bass hits & interactive rhythms
23:56 Modulation ‘hooks’ from binary counter clock dividing
26:39 Experimental expressive noise wrangling
27:05 Binary counter sub octaves & external modulation of filter FX
29:12 Alien critters clashing into ambient space
29:48 Monstrous sounds from multiplexing
33:13 Metallic synthesis & bell like tones & swells
33:49 Metallic synthesis for cymbals + dynamic LPG modulation



"Logic, Unbound. Meet Luna. The first serious Lunetta synthesizer.

Look beyond clean waveforms and predictable polyphony. Luna will take you back to a time when digital didn’t mean perfect. It meant raw. Inspired by the subterranean DIY culture of the 70s and 80s, Luna is a love letter to the Lunetta machines of old: Living, breathing organisms built from CMOS logic chips. But where those machines were fragile experiments, Luna is a weaponized instrument of sonic confusion.

The Nervous System Exposed. True to the Neutral Labs philosophy, we don’t believe in hiding the magic behind an opaque face plate. Luna features exposed CMOS inputs and outputs right on the front panel. You're not just patching cables, you are rewiring the brain of the synthesizer itself. Combine signals, bend logic, and physically intervene in the computation to create sounds that shouldn't exist.

Rhythm is Timbre. Timbre is Rhythm. In the world of Luna, there is no difference between a sequencer and an oscillator. The same digital pulse that drives a bass line can be accelerated into a screeching lead or folded into a metallic drone.

5 oscillators provide the raw material. A chaotic array of logic blocks (XOR, NOT, AND, shift registers, counters, multiplexer) will chew up those signals and spit out complex, evolving mathematical noise.

Taming the Digital Mess. Raw logic can be harsh. To turn this binary chaos into music, Luna feeds its digital soul through 3 organic low-pass gates. These analog circuits impart a natural decay and percussive punch to the madness, transforming mathematical errors into bongos, plucks, and thumping basslines.

Drench it in Atmosphere. Once you’ve constructed your signal, destroy it again. Luna comes equipped with a suite of effects — distortion, delay, reverb, chorus, bitcrusher, phaser and more — to smear your logic into a wash of ambient bliss or gritty industrial texture.

5 oscillators
logic gates (2 XOR, 2 NOT, 2 AND)
5 logic blocks (5-step ring counter,4-bit binary counter, 2 shift registers, 4-channel multiplexer)
3 touchpads that generate logic signals
3 channels for audio manipulation (low-pass gates with adjustable decay and switchable trigger mode, gain, tilt EQ)
13 audio effects that can be freely assigned to 2 effect slots running in series (drive, delay, reverb, 6 filter types, bitcrusher, phaser, chorus, comb filter)
CV control for effects and 2 oscillators
MIDI control over 2 oscillators, all 3 low-pass gates, and 3 logic outputs (MIDI TRS A socket)
2 sequencers with up to 64 steps, syncable to clock or MIDI
audio output is headphone compatible
available as a desktop synth or 42 HP Eurorack module (desktop version comes with a 12-pack of black/gold braided patch cables)
See more videos and photos on Instagram.

Note: For sustainability reasons, the desktop version does not come with a USB power supply, just a USB-A to USB-C cable. You will need a 5V supply, such as a phone charger, power bank or laptop.

Note: The desktop version has a Eurorack power header and can be placed into a Eurorack. The desktop case however has 5V USB power and no Eurorack rails, you cannot use it as a 42 HP rack without modifications."

The Son of GX - Demo song, History and Details

video upload by R.O.T. Studios

‪"@marcbrasse747‬shows off his creation with a full demo song, plus the history and details of the 'Son of GX'.
Website with details: https://www.brassee.com/instruments.h..."

Timestamps:
0:00 - Demo song
7:23 - The history and story
14:37 - Explanation of the controls and sounds

"This is a heavily customized E-70 organ with the synth functions of all 3 orchestra sections (upper keyboard, lower keyboard, pedals) fully and independently programmable. Furthermore a 4th solo section has been added.

Although many people have compared converting Yamaha E-series organs into programmable synthesizers to turning them into CS80´s I have always looked much more towards the GX1 connection. The GX1 was the mother of all Yamaha CS´ and contained 1 analog solo synthesizer, 2 polyphonic sections and 1 bass pedal section. So how could the Son Of GX ever be really complete without the addition of such a solo synth?"

Read more here

Heritage Modular Laser Engraving Automation

video upload by f1oat3d

"An automated laser engraving process developed for the Heritage Modular front panels, converting multilayer SVG artwork into precisely positioned engravings through scripted control of geometry and machine parameters."