PlantsSystem-CHRONOS v1.0.0

video upload by plantssystem

"CHRONOS – a tiny granular synth built on a Raspberry Pi Pico2

CHRONOS is a DIY granular synthesizer running on a Raspberry Pi Pico 2(RP2350), with a Waveshare Pico-Audio DAC and a 1.3" Pico-LCD. It layers long, overlapping grains (roughly 0.7 to 3 seconds each) into slow, soft, ambient textures.

Features:

Grains are drawn from four waveforms: Sine, Triangle, Soft Saw and Bell

Four selectable scales: Hirajoshi, Miyako-bushi, Ryukyu and a Maj7 progression, with the chord changing automatically

Stereo ping-pong delay with feedback

Auto-pan that lets each grain drift across the stereo field

5-step tone control (low-pass), plus a Freeze function that sustains the current grains

The LCD shows every grain live: height is pitch, horizontal position is stereo placement, and size/brightness follows each grain's envelope"

Designing a Module - Prototype itteration with Instruō

video upload by Instruō

"In 2015/16 Instruō began as a video project. Specifically a time-lapse of me designing the original troika module.
Ten years later, I’ve returned to that idea with ceithir, a winter holiday project I designed with video documentation in mind.

Before the first full sized (58HP quad) ceithir hardware prototype, I focussed on a single filter channel version. This video covers the second prototype iteration of this single channel version. It was a pretty significant revision from the first one, but paved the way for the quad design.
The filter core board was designed with this design, which remained almost fully unchanged in its final form (I changed one resistor value).

CLICK FOR MORE »

8 voice poly to 12 voices

video upload by Craig Barnes

"This is the synth I made last year which was an 8 voice bi-timbral analogue polysynth with AS3340 VCOs and AS3372 filters in matrix 12 configuration. As happy as I was with the synth I thought it would be great to make use of what I've learnt on my last 12 voice DCO polysynth and apply it to this build. So I created some smaller 6 voice cards, made the LFOs in software on the PICOs and rewrote all the controller software. Early days, but it's sort of working, one voice card is slight louder than the other and it's effects don't work. I'm sure there is a lot more to do yet."

Roland SH-101 Session thru DIY Distortion TB-303 like ! By Element 4

video upload by tubeuser303

Lab 60 In Depth Walkthrough

video upload by Labyrinth Of Spirits

"Here is basically walk through the synth and how it works and sounds.

I will get another video up soon that has a no-talking preset sound demo to help show its versatility"

Follow-up to this post.

RECOSYNTH TUBE BASS

video upload by Arthur Joly

The 1010music Blackbox OG Just Got SP-1200 Mode, Chords and Sidechain (Unofficial Firmware Mod)

video upload by Justin Joe

"Twelve new features on the original 1010music Blackbox, added with an unofficial firmware mod: solo, chords, Elektron-style note conditions, SP-1200 / SP-12 / S950 lo-fi modes, a 24 dB filter, a sidechain ducker, slice start/end on the knobs, and a granular delay. It's free, the code is open, and it runs on top of stock firmware 3.1.9.

🔧 GET THE MOD (free) + get an email when new builds drop:
https://justinjoe.com/blackbox-mod

No compiling needed: download 3.1.9 from 1010music, run it through the browser patcher, copy it to your card.

⚠️ Unofficial. Not affiliated with, endorsed by, or supported by 1010music. Original Blackbox only (not Blackbox 2). At your own risk. The mod does not include 1010music's firmware; you bring your own copy."

He built a synth - Introducing the Lab 60

video upload by Labyrinth Of Spirits

"I have been working on this for a while and it is finally, mostly, done. I might add an effects circuit into it and swap the guitar stomp pedal switch out to a softer latching switch...but we shall see.

This is a modified Tsynth, built inside of a Casio CT-670, with a Juno Chorus clone added for good measure.

Resources worth checking out: https://github.com/gligli/juno-chorus... -- especially the issues page

https://groupdiy.com/ -- this is a great forum (Huge thank you to DMP, c1184701, and Midphase for all their insight and help)

https://www.tindie.com/products/elect..."

SS1 #lmz #lmzvuk #analog #synth

video upload by LMZ

NM3

Pocket Viewer Wavetable Synth

video upload by Tim Kaiser

Overlooked Module #19: AI Synthesis X Filter (AI024)

video upload by Musical Miscellany & More

"Here's another Overlooked Module in the world of Eurorack. I built this one during Knobcon 14 (2026) at one of the DIY workshops. It's a great sounding 3320 filter that is reminiscent of many iconic 80's synths. Buy Me a Coffee: https://buymeacoffee.com/musicalmisce...
Join my Discord Community: / discord"

See the introduction post here.

CHOMPI is Open Source!

video upload by chase bliss and CHOMPI CLUB

"Our little pal CHOMPI is officially being discontinued.

That's the bad news.

The good news is that we've decided to make it open source as a result. You now have everything you need to edit firmware, create your own firmware from scratch, and even physically build a DIY CHOMPI of your own.

We're also releasing a new beta firmware called WAVE – a wavetable synth – that's available for everyone to play with, and an ideal starting point for open source work.

You can find everything you need to get started on the CHOMPI website.

Open source info here:
https://www.chompiclub.com/opensource

WAVE firmware here:
https://www.chompiclub.com/firmware"

Reco-Modular & Phaser

video upload by Arthur Joly

Synthesizers.com Introduces Q108 Amplifier DIY KIT

"We're so excited to share with you the new Q108 Amplifier DIY KIT!!

The Q108 Voltage Controlled Amplifier is a staple of any synthesizer system.

The amplitude of any waveform can be controlled by another signal such as an envelope generator, sequencer, oscillator, etc.

An Initial Gain control allows manual adjustment of the amplitude and a Level Control determines the impact of the control signal.

Both Linear and Exponential responses are available to simulate a variety of real-world sounds. Positive and negative output signal polarities are provided.

Two inputs are provided for mixing."

You can find posts featuring the Synthesizers.com Q108 here.

Open Source Programmable Guitar Pedal using STM32

video upload by GuitarML

"Project Link: https://github.com/GuitarML/GuitarPed...
Walkthough of my custom STM32 based digital guitar pedal. I give an overview of the features, and then dive into the project hardware and software. I also show a demo of the included Reverb/Delay.

00:00 - Pedal Features
4:25 - Open Source Project Overview
5:58 - KiCad Schematic
10:35 - KiCad PCB layout
16:55 - STM32CubeIDE and code
23:05 - Reverb/Delay Effect Demo

Patreon:
/ guitarml"

OB-X One Teaser

video upload by TjimmyChonga

"Two Oberheim OB-X voice cards (Crowbx clones).
Custom everything else."

WGD Modualr Has Been Busy… 3 New Eurorack Projects!

video upload by wgd modular

"In this video, I’m giving you a quick update on what I’ve been working on over the summer and showing three new projects that have recently made their way into my Eurorack setup.

🎛️ First up is kefir, a simple 24HP four-channel stereo mixer with input normalization. I needed another stereo mixer for my 1U row, so I took one of my already proven mixer designs and turned it into a dedicated 1U utility module.

🍉 I also made a 1U version of melon. Since a 4HP Eurorack module fits perfectly into a 1U row when rotated by 90 degrees, I designed a new 22HP panel for the existing melon PCB. The module now fits nicely into my 1U row, and there are already more new firmwares in development including a port of the Mutable Instruments Elements engine.

🌱 Lastly, I completely redesigned my Daisy-based stereo multi-effects module. The new version is called carciofo and is built around the new Electrosmith Seed 3. It is only 6HP wide and adds two buttons and a WS2812B RGB LED for a much more flexible interface.

For this video I’m also taking the new Quattro firmware for a spin, which puts drive, chorus, delay and reverb behind the four knobs."

⏱️ Chapters 00:00 – Intro 00:03 – Coming Up 00:19 – Kefir: 1U Stereo Mixer 00:50 – Melon goes 1U 01:42 – Melon Mod 303 Demo 02:30 – Carciofo: 6HP Stereo Multi-FX 03:01 – Quattro demo 04:18 – Final thoughts

Akai S900 and S950 with custom Operating Systems

video upload by Mike Feedback

"I developed a custom operating system for the Akai S900 and Akai S950 samplers which turns them into real-time signal processors. You can run audio through them and have them add that 12-bit grit without having to worry about sample time.

If you have an s900 or s950, download it for free:

https://s900fx.com
https://s950fx.com

#akai #beatmaking #boombap #hiphop #akaimpc #hiphopbeats #12bit #lofi #sample #s900 #s950 #mpc #s900fx #s950fx"

This one is in via Ivan Trajkovic aka deejayiwan.

S900FX and S950FX Anti-Alias mod

video upload by Mike Feedback

"I corrected a sample rate bug and added the ability to turn off the anti-alias filter in the latest version of S900FX and S950FX.

S900FX and S950FX are custom operating systems for the Akai S900 and Akai S950 that turn the hardware into signal processors that allow you to apply their 12-bit grit to the audio signal in real-time. Pass the audio through them and record into your modern sampler.

Get them for free." [links above]

Update: new demo from Mikus Pilatus:

New Akai S950FX OS - monitoring thought converters and filter

video upload by Mikus Pilatus

"What a legend ! 2x new Akai S900 / S950 OS out and they are both dope."

[$8] DIY eurorack modular synth SSI2144 VCF | based on Sound Semiconductor SSI2144

video upload by HAGIWO

"My 93rd original eurorack modular synth DIY projects.
Sound Semiconductor SSI2144 Low pass filter VCF

working documents (schematics)
https://note.com/solder_state/n/n5c10...

Please support me to continue projects.
In patreon you will find content about my background , technical information.
/ hagiwo"

JvR Spin F1 Elektor Formant Dual

video upload by Jos van Ras

"The JvR Spin F1 Formant Dual is a high-performance Digital Signal Processing (DSP) multi-effects unit designed for the DIY Elektor Formant Synthesizer system. Powered by an ATmega328P microcontroller (standalone DIP-28 package) and a Spin Semiconductor FV-1 DSP chip, this module architecture bridges old-school analog synthesis with modern digital studio effects.

For more info contact me on http://www.josvanras.com/"

"Elektor Formant in a new Design

Modules are all for sale and also complete systems. See under DIY-Projects."