"tbish" update on "synthiota" board, jam starting at 1:20

video upload by todbot

"Start at 1:20 for a little fun jam.
Got some time to work on "tbish" TB-303 emulator in CircuitPython.
This video shows some of the updates.
The updates include:
new mapped_pot_controller to allow the pots to have different modes
sequencer has separate lane for slides so that accent & slide can happen on same step
tbish_synth now has 4 different waveforms to choose from
can edit the sequence steps, both notes and accents/slides/mutes
can switch between sequences
can adjust bpm & steps_per_beat
actually using the LEDs

code and schematics: https://github.com/todbot/synthiota

#tb303 #circuitpython #raspberrypipico"

previously:

"tbish" almost on "synthiota" board

video upload by todbot

An eyebrow-raising MIDI controller for $35

video upload by Floyd Steinberg

"Mediapipe + OpenCV caused a big stir some 4 years ago, but I never got around trying it myself. Until today, and of course I'm sharing my results with you. This Open Source software can detect gestures, poses and facial expressions and transform them to so called landmarks that can easily be used for all kinds of shenanigans (in this example: controlling your synths).

00:00 introduction: what's this?
00:38 demo 01: playing chords + bass + controlling filters
01:32 hardware needed
02:12 installation
02:56 what are OpenCV and Mediapipe?
03:55 this example explained: reading landmarks, converting to MIDI
06:35 demo 02: controlling an arpeggiator
07:37 demo 03: controlling filter cutoff frequency and pitch bend with my eyebrows
09:21 demo 04: playing pads on Akai MPC Live 3 with backing track
10:10 conclusion / do the YouTube thing!"

Where to get the stuff: [affiliate links]
Mini camera: Amazon DE | Amazon US
RasPi Zero 2: Amazon DE | Amazon US
SD card: Amazon DE | Amazon US

Installation instructions

sudo apt update
sudo apt upgrade
pip install mediapipe opencv-python --break-system-packages
git clone https://github.com/mrfloydst/eyebrowr...

then python3 ./hand.py or python3 ./eyebrow.py

HÄLP ZIS CHANNEL
https://www.patreon.com/floyd_steinberg
https://floydsteinberg.gumroad.com/
https://floydsteinberg.bandcamp.com/"

GreyScale – A Standalone MIDI Sequencer KOSMOS Powered by Raspberry Pi Pico (RP2040)

This one is in via GreyScale aka plantssystem whose videos you have likely seen on the site.

"GreyScale is a compact, self‑contained MIDI sequencer built entirely around the Raspberry Pi Pico (RP2040).

Its minimal hardware footprint hides a surprisingly deep generative engine, combining Euclidean rhythm generation, step sequencing, probability control, and evolving melodic behavior.

The clean GreyScale UI provides immediate visual feedback — step activity, Euclid parameters, probability states — all rendered on a crisp LCD. A joystick and four dedicated buttons offer fast, tactile control, keeping the workflow musical and instrument‑like rather than menu‑driven.

GreyScale runs completely standalone with standard MIDI output, making it an ideal partner for hardware synths, desktop modules, or DAW setups.

Designed for spontaneity and long‑form generative performance, it encourages exploration and rewards experimentation. A small instrument with a refined feel, GreyScale blends DIY charm with a polished, modern sequencing experience."

Update: demo here.

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Yuyo cmos synth - First try Attiny85 dco with analog cmos shaping and twin t filter

video upload by JIANT

"everything is from the synth to the zoom recorder, twin t drums, xor snare, pt2399, and cmos stuff.

attiny85 reseting the phase of 40106 oscilators, the digital control accepts 1voct from keysetp and go to the 40106 inputs through resistors, a little rc for filtering the pwm, and for this reason when you change the oscillator frequency you can get intervals and crazy stuff. is not orthodox but suits my need for Rich timbres. the dco goes to 40106 buffers , and then 4040 dividers, twin t filters, one for each of the two voices, one goes to env, vca, filter, delay, and the other one to clock divider and filter, to get the sub osc.

firmware super simple only for checking the conversion from filtered frecuency of the attiny85 to my 40106 non exponencial vcos.
currently is tracking 10 octaves really good, the trick is put a voltage divider in the cv in of the attiny because keystep has 0 to 10v and the attiny accepts 0 to 5v tehn the tracking inside the attiny converts o.5v oct to 1 volt oct. i dont know anything about coding but i made it with chat gpt and my design . source code will be in the coments ."

Previous videos:

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8 Track MIDI Sequencer on Adafruit PyGamer

video upload by ugufru

"This is a short demo of an eight track MIDI sequencer that I created on the Adafruit PyGamer."

via Adafruit

"What fits in your pocket, is fully Open Source, and can run CircuitPython, MakeCode Arcade or Arduino games you write yourself? That's right, it's the Adafruit PyGamer! We wanted to make an entry-level gaming handheld for DIY gaming, and maybe a little retro-emulation. It's not the fastest and best of everything but it is an all-in-one dev board with a lot of possibilities!

The PyGamer is powered by our favorite chip, the ATSAMD51, with 512KB of flash and 192KB of RAM. We add 8 MB of QSPI flash for file storage, handy for images, fonts, sounds, or game assets."

Building the ReZyklus - Vangelis' Zyklus MPS1 Clone

This one is in via Jeroen of https://zyklus-mps.com/

"A while ago a group of enthausiasts set out to create a clone of the Zyklus MPS-1 that was made famous by Vangelis for its use on Direct (this was also the inspiration for the actual 'Direct' system he used until ca 1994). The original creators of this machine, Pete Kellock and Bill Marshall graciously allowed us to use the schematics and software to create this clone and have given us their permission to set it free for everyone who wants to make their own. So here goes:

In this GIT repo is everything you need to create your own machine. You will have to source your own parts, but there is a list for that. The parts are basic components, nothing custom, but some items may become slightly rare (like small EPROMs).

Its basically just a Z80 based computer.
There are also files to have the circuit boards and panels created (we used jlcpcb for that), and some 3d printing files for various panel work. A lot of the buttons etc you can get cheaply from Aliexpress and the like. Bin files for the EPROMs are also avialable. I've been also given permission to open source the actual source code, and I will do that too, at some point, but I'm still working on a few small issues before I can do that.

https://github.com/jeroenhn/zykl

There is a discord server you can join where you can chat with other builders.

The clone as we made it, is a dedicated to the memory of Vangelis and it's noted as such on the main circuit board."

See this previous post for a Demo tape on the original Zyklus. See the Zyklus label at the bottom of this post for additional posts including a documentary with Vangelis.

Pictured: Paul's white ReZyklus in the making.

Original grey Zyklus below from this post. Only 40 were made.

Drone Scope by Tim Kaiser

video upload by Tim Kaiser

Craig Barnes Jupiter 8 editor/assigner

video upload by Craig Barnes

"Building a cheap Jupiter 8 from two JP-08 modules I rarely use. I've tried to emulate as much of the original Jupiter 8 onto the front panel, although I've made some concessions because of the way the JP-08 is controlled over MIDI."

Automatique LFO Synth

video upload by Tim Kaiser

Kraftor hosting Nexus

video upload by Polaxis

"Sentence prepared with https://www.polaxis.be/nexus-serial-m...
and triggered via MIDI using a custom MIDI keyboard designed by https://learn.adafruit.com/usb-keyset"

Info on the USB Chorded Keyset #3dprinting #circuitpython
video upload by Adafruit Industries

"Build a 3D printed USB chorded keyset inspired by the original Doug Engelbert "Mother of all Demos" keyset from the 1960's. This 5-finger keyset lets you type without moving your hand, entering full words and phrases by pressing multiple keys simultaneously as a chord."

Synth:Bit – 16‑Note Micro:Bit Synthesizer Keyboard Module with OLED Display

via this eBay listing

"Synth:Bit – 16‑Note Micro:Bit Synthesizer Keyboard Module with OLED Display, Battery Pack & Audio Jack, Lego‑Compatible Base, Matrix Inputs, Jumper Pins for Expansion

16‑Note Synthesizer for Micro:bit — turns your Micro:bit into a full octave keyboard (16 inputs in a 4×4 matrix) for creative music projects and experimentation.

Integrated Audio Output & Battery Pack — built‑in audio jack to hook up a speaker and a portable battery pack so you can use it anywhere.

OLED Display & Intuitive UI — clear screen interface for visual feedback, settings, and control of synthesizer parameters.

Lego‑Compatible & Breadboard Friendly — board spacing fits LEGO bricks; jumper pins allow easy breadboard or external keypad integration.

Expandable & Open Source — supports expansion via jumper pins, external keypads, or custom builds; program via MakeCode, Python, or microcontroller tools."

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Herbs and Stones Seeds - mini noise synth

video upload by Herbs and Stones

"Seeds is a DIY noise synth that will be available to build at various workshops."

https://herbs---stones.com/seeds-work...

Seeds is a portable, battery-powered noise synth.

Its operation is based on the improper use of primitive CMOS digital technology: by forcing a linear output from an integrated circuit that operates using Boolean logic, by draining it of current and pushing its inputs to their limits, organic, unpredictable, and never-replicable sounds are achieved.

Seeds is an instrument with a vast array of sounds, designed for research and experimentation.

Technical Specifications:

Power: 4 AA batteries (included in the kit)
Output: Stereo TRS minijack

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DIY Minimoog Inspired Synth | A Teensy Powered Tribute

video upload by Moby Pixel

"In this video, we’re building a Teensy-powered synth inspired by the iconic Minimoog Model D, and exploring what made the original design so legendary. We’ll walk through all-the-things: oscillators, mixer, filter, envelopes, hidden features, presets, the Teensy’s USB audio setup, and how Bob Moog’s Minimoog helped shape modern subtractive synthesis.

This is my biggest project to date, and I couldn’t be happier with how it turned out! The Teensy 4.1’s built-in USB audio is sending power, MIDI, and audio over a single cable. What a time to be alive, haha! All code and build files are available on GitHub if you want to make your own. Cheers!

GitHub: https://github.com/NickCulbertson/Min...

A 6-voice polyphonic virtual analog synthesizer built with the Teensy 4.1 microcontroller, inspired by the classic Minimoog. Features comprehensive synthesis with USB audio/MIDI and intuitive menu control.

Key Features:
6-voice polyphony with 3 oscillators per voice (18 total)
6 waveforms per oscillator
Noise shared white/pink noise
24dB Moog-style ladder filter with ADSR envelopes
Independent LFO with pitch/filter/amp targets
Macro knob system - remap filter knobs to LFO controls
USB Audio + MIDI - single cable to computer
20 hardware encoders + LCD for real-time control
20 Presets - 80s Brass, Saw Keys, Bass sounds, Pads, and more
Multiple play modes - Mono, Poly, Legato with glide

Parts List:
Teensy 4.1 – https://www.sparkfun.com/teensy-4-1-w...
Menu Encoder – https://www.amazon.com/Taiss-KY-040-E...
Other Encoders – https://www.aliexpress.us/item/325680...
LCD 2×16 – https://www.amazon.com/Hosyond-Displa...
Knobs – https://www.amazon.com/Taiss-Silver-R...

Chapters:
0:00 The Minimoog
3:00 MiniTeensy Synth Build
6:32 Minimoog & MiniTeensy Designs Explain ed
9:26 Presets Demo
12:25 SUBSCRIBE! (maybe?)

Thanks for Watching!
Nick
Moby Pixel"

Tobinksi Standalone Mono Synth

Note: links to listings are affiliate links for which the site may be compensated.

via this Reverb listing

"Only a handful made. Tobinski mono Synth (formerly Danny sound). Sounds incredible. Everything works accept 1 led needs changing. Comes in its own carry case. Cables included.

Modules overview:

OSC 1- Electronotes EN129 Linear Through Zero Oscillator
OSC 2 -Buchla 258 Oscillator
ENVELOPE 1 - Roland M140 Envelope Generator
ENVELOPE 2 - Electronic Dream Plant (EDP) Wasp Filter Control Envelope
ENVELOPE 2 Electronic Dream Plant (EDP) Wasp Filter Control Envelope
ENVELOPE 3 Electronic Dream Plant (EDP) Wasp VCA Envelope
TIMBRE (TMBR) Buchla 259 Timbre Generator Module
LOW PASS GATE (LPG) Buchla 292 Low Pass Gate Module
LOW PASS FILTER (LPF) Moog MiniMoog Low Pass Filter Module
VOLTAGE CONTROLLED AMPLIFIER (VCA) Moog MiniMoog Voltage Controlled Amplifier
MIDI TO CV Oakleysound 3031 midi to CV"

Note this appears to be the first post to feature Tobinksi.

CLICK FOR MORE »

Stromer Mutroniks Drumvoice 2000

video upload by Stromer Mutroniks

"My perfboard 808 type a thing"

Introducing Quad Creek

video upload by Dylan B.

0:00 - Intro
0:35 - Guitar
1:20 - Feedback
2:03 - Chaos
2:54 - Melodic Jam
5:30 - Outro



"This is Quad Creek, a resonant modular synthesizer based around four band pass filters. It uses 4mm banana jacks for connections. There are three 3.5mm stereo outputs, one for the main mix and two for the Creeks. There are two 3.5mm stereo inputs, one for each set of Creeks. The unit runs off of a 2.1mm center positive 12V supply.
Cables and power supply not included.

ASSEMBLED UNIT INCLUDES:
- Fully built synthesizer with wood back panel

DIY KIT INCLUDES:
- PCB
- Front Panel
- All electronic components, including pots and jacks
- Does NOT include wood back panel

PCB + PANEL KIT INCLUDES:
- PCB
- Panel

PCB KIT INCLUDES:
- PCB
- That's it

Further info can be found at: https://loess-labs.net/inst/creek/

BOM, soldering guide, and other documentation for DIYers can be found here: https://github.com/uvknhn/quad-creek/"

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Melting Point Vactrol Filter

video upload by Ground Grown Circuits

"Short demo of a sequence running through the Melting Point vactrol filter. Now available on my Reverb page"

via this Reverb listing

"THIS IS A FULL DIY KIT

This kit includes everything required to build the Melting Point vactrol filter. This is a character filter that will add a lot of color to the sound.
There is a low-pass and hi-pass audio input, an audio output, 2 CV inputs and a variable level “Strike” CV input.

The feedback/resonance will begin self oscillating slightly past noon, and will continue to add more drive and color if you push it further.
Trim pot on the rear allows adjustment of CV response.

Includes a power cable and 4x M3 screws.

There is a qr code in the kit that will take you to a page with build instructions.

Please note the knobs included in the kit are different than the knobs in the finished module image."

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FLEA MARKET / FUSE / DIY - SYNTHI (with internal spring reverb) by Jacob Steel

video upload by jacobsteel

"DIY Synthi - piano stand test! #synthesizer #electronicmusic #synth #synthi #diysynthi #matrixsynth"

And a playlist in chronological order:


"Currently running the following:

Oscillators 1-4 - started out with the XR2206, schematic, pretty much from the data sheet. This part is the crazy chaos part. The XR2206 can be amplitude modulated as well as frequency modulated (here with a button) Oscillators 5-6 - Digital (this part will be CV volt-octave controlled) https://www.alldatasheet.com/datashee...

Envelope - 555-based envelope, similar to "the fastest envelope in the west" https://www.schmitzbits.de/adsr.html"

Playlist:

1. DIY SYNTHI first test all components
2. DIY Synthi longer demonstration….
3. DIY Synthi, stick demonstration
4. DIY Synthi - CV to Matrix test
5. Ölands Norra Udde - the Northern Head of Öland (DIY Synthi jam)
6. Alla världar som finns - (All Worlds That Exist) voice/lyrics Johan Holmlund
7. Synthi - Piano short improv

[$11] DIY eurorack modular synth 5step Sequencer | Arduino nano based

video upload by HAGIWO

"My 88th original eurorack modular synth DIY projects.
Arduino nano based 5step CV/Gate sequencer , Buchla Easel inspired.
Digital control , Analog output.

working documents (schematics,code)
https://note.com/solder_state/n/nf6c2...

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

-------------------------------------------------------------
Repository of HAGIWO's DIY Modular Synth
https://note.com/solder_state/n/n54e0..."

Roland Future Design Lab and Neutone Introduce Project LYDIA

Press release follows:

A Technology Preview Exploring AI, DIY Culture, and the Future of Music Creation

Los Angeles, November 11, 2025 — Roland Future Design Lab, the advanced technologies research group of Roland Corporation, announces Project LYDIA, an audio processing platform preview created in collaboration with Neutone, developers of next-generation AI tools for musicians and artists. Project LYDIA merges Neutone’s trainable AI software with Roland’s hardware expertise, using a Raspberry Pi 5 single-board computer to deliver a compact, stage-ready prototype that reimagines DIY innovation for a new generation.

Bridging AI and DIY Creativity
Roland’s legacy in DIY music creation began in 1981 with AMDEK (Analog Music Digital Electronic Kits), a line of build-it-yourself kits that encouraged musicians to experiment with technology. Today, Roland Future Design Lab revisits that spirit, asking how modern creators can explore sound through emerging AI tools.

AI for Sound Discovery and Exploration
Powered by Neutone’s Morpho technology, Project LYDIA, named after DIY and AI, uses “neural sampling” to learn the tonal qualities of any sound and apply it to another in real time, with the sonic results ranging from highly musical to exotic and surprising. The current Project LYDIA mockup houses a Raspberry Pi 5 computer running Neutone’s special version of Morpho alongside Roland’s latest ideas for a simple, tactile control panel. Audio I/O is currently managed via a USB-connected Roland Rubix interface, with future iterations aiming to fully integrate I/O for a completely self-contained device.


AI Innovation at Roland
Project LYDIA builds on Roland’s growing exploration of AI as a creative partner for musicians. In 2024, Roland and Universal Music Group (UMG) jointly introduced the Principles for Music Creation with AI, a framework outlining shared commitments to ethical and artist-centered innovation.
“Roland has taken a leadership role globally in practicing responsible development with AI for music creation,” said Paul McCabe, Senior Vice President of Research and Innovation at Roland. “Part of being responsible is getting input from creators on what they find useful, helpful, or inspiring, and what ideas may not be welcome in their workflows. Releasing Project LYDIA as a technology preview allows us to demonstrate possibilities, seek community input, optimize, and improve.”

Shaping the Future Together
Project LYDIA debuted at the Audio Developer Conference taking place November 10 through November 12 in Bristol, UK, inviting feedback from the creative community to guide future research in AI-driven music tools. Musicians and makers can share their thoughts and ideas via a short survey here.

To learn more about the inspiration and technology behind Project LYDIA, visit Roland’s feature story on Roland Future Design Lab.

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