Hansy Synth Daisy Poly Synth

Hansy Synth Daisy Teaser1 video upload by gilleslacaud

"The Daisy poly Synth is a 6/5 Voices polyphonic virtual analog and sampler synthesizer"

Seconddemo1

video upload by gilleslacaud

"PCM Samples"

CLICK FOR MORE »

MadLab Bleep-o-Tron DIY Synth! \\\ Patch Flip & Tweak ///

video upload by midierror

You might recognize the name from a 2016 incarnation posted here. See the MadLab label for additional creations.

"This phase modulation synth costs $45 !!?! Take a quick tour tweaking some patches for the excellent Bleep-o-Tron (Redux) from MadLab! This is a DIY kit you solder yourself, which has some pretty impressive features. It's a polyphonic synth with 5-Pin MIDI In, 3.5mm audio out and built in effects (Flanger, RingMod & Delay).

There is a superb editor for the synth, which not only alows you to control various elements of the synth, but also copy/paste them to different sections! The video does have audio glitches and held notes, due to the playback of multiple MIDI notes during the tweaking - these by no means affected my enjoyment, but are worth mentioning.

More info here: https://www.tindie.com/products/madla...

MadLab site: http://www.madlab.org/

The audio has light post-processing applied."

Erica Synths Introduces EDU DIY SNARE DRUM

Designing a simple analog snare drum from scratch

video upload by Moritz Klein

"No drum machine is really complete without a punchy, snappy snare. Together with the kick, it creates the rhythmic backbone for most grooves.

So in my ongoing quest for creating a Roland-inspired modular drum machine, I knew I had to come up with a snare circuit that would complement the kick and hi-hat I‘ve already designed. After a lot of fine tuning, I landed on a circuit that can emulate a TR-606, TR-808 or TR-909 snare."

No drum machine is really complete without a punchy, snappy Snare Drum. Together with the Kick, it creates the rhythmic backbone for most grooves. So for our percussion-focused second season of educational DIY kits, we knew we had to come up with a Snare circuit that would complement the Kick and Hi-Hat we’ve already released. After a lot of fine tuning, here’s what we came up with: introducing mki x es.edu DIY Snare Drum.

Features
Manual and CV controlled Tune
Tune CV depth attenuator
Manual Attack and Decay control
Manual and CV Snappy (noise and tone crossfade) control
Accent input

We – Erica Synths and Moritz Klein – have developed a series of educational DIY kits under the brand name mki x es.EDU with one specific goal in mind: to teach people with little-to-no prior experience how to design analog synthesizer circuits from scratch. What you’ll find in the box is not simply meant to be soldered together and then disappear in your rack. Instead, we want to take you through the circuit design process step by step, explaining every choice we’ve made and how it impacts the finished module.

NB! All kits in these series are simple and come with extensive user manuals which can be downloaded separately, therefore we will not provide customer support in case your DIY build fails to function or similar.

CLICK FOR MORE »

ZIRCOTHC ESP32 DRUM SYNTH LOFI MACHINE

video upload by zcarlos zc

"ESP32 drum synth Lofi machine.
Sound demo of my DIY drum (or noise) machine.

Hardware:
- Lolin S2 Mini (ESP32 S2)
- PCM5102A I2s dac
- 24 push buttons (8x3)
- Rotary encoder
- OLED display I2c
- 32 LED WS2812B

Synth engine:
- Wavetable synthesizer based on DZL Arduino library "The Synth" (github.com/dzlonline/the_synth)
- 16 sound polyphony
- Sound parameters: Table, Length, Envelope, Pitch, Modulation, + Volume, Pan and Filter.
* Filter (LowPassFilter) comes from Mozzy library (github.com/sensorium/Mozzi)

Sequencer:
16 step/pattern editor and random generators (pattern, sound parameters and notes)

Soon schematics and code."

Previously:

ESP8266 DRUM MACHINE V2

video upload by zcarlos zc 5 years ago in 2019

"ESP8266 DRUM MACHINE V2
2 MPR121 modules (24 keys)
1 I2S DAC
4 potentiometer (i2c ADC ADS1115)
RGB neopixel style leds

More info: https://zircothc.wordpress.com"

ESP8266 DRUM MACHINE

video upload by zcarlos zc also 5 years ago in 2019

ESP8266 DRUM MACHINE
2X MPR121 modules
1 MAX7219 module
1 I2S DAC
24 Green/Red LEDS

More info: https://zircothc.wordpress.com

New Barton BMC108 Midi2CV Demo

video upload by boogdish

"A new DIY synthesizer module design. This lets you use a keyboard, sequencer or other MIDI controller with your modular synth. Two sets of CV/Gate/Trigger outputs with keyboard split, multiple note priority sets, bend inhibit and midi clock output."

via Barton Musical Circuits

"This is a two voice Midi to CV converter module. It has a keyboard split option allowing you to separate the keyboard into two separate synth voices, tune mode, multiple sets of note priorities for when more than two notes are played at the same time, options for inhibiting note bend on an individual output and output for the MIDI clock.

The PCB is set up for attached 3.5mm jacks and a detached MIDI input jack. If someone wanted to adapt it to a +/-15V system, no parts changes would be required."

JCS BN-1 "Bakery of Noise" Digital PCM Synthesizer – One of a Kind

Note: Auction links are affiliate links for which the site may be compensated. "JCS BN-1" 4-Bit Linear PCM Synthesizer - Part 1 (Prototype)

video upload by blarrer20

"JCS BN-1" 4-Bit Linear PCM Synthesizer - Part 2 (Finished)

video upload by blarrer20

"This video demonstrates the final version of a 4-bit Linear PCM synthesizer that I have designed and built over about two months. It makes use of mostly Soviet clones of 7400 and 74LS series TTL chips, with no microcontrollers involved. It has a 256 x 4 SRAM chip that allows the user to program whatever waveforms may be desired, with looping capability, and starting at whatever point desired. Most importantly, it is able to be controlled by an external source, for example a keyboard instrument. It also has a frequency doubler circuit. This video is part 2 of 2, showing the finished product.

If you want to skip right to the sounds, go to 27:08"

via this listing

Pics of the inside below.

Details from the listing:

CLICK FOR MORE »

VEKT - Portable Drum Computer V.4

video upload by uszymyszy

"Hi! Here is v.4, I redesigned the enclosure to be more rugged, we have also a battery and speaker. Most of the errors are solved, the UI is quite cluttered yet and I make a lot of missclicks/wrong shortcuts but after some tweaks everything should go fluent.

The idea is to have a pocket version of Ableton workflow, simplified but easy enough to create sketches for further polishing in DAW. I plan to build several units for testers but is still a lot of work to do and I cannot guarantee anything at the moment. I will try to progress as much as possible to finish this in this year."

And from one year ago:

Vekt - Portable Drum Computer

video upload by uszymyszy

"I built a Pocket Operator alternative. It can now record and play internal synths. There are 4 engines:
- Bass (Roland TB-303 mod),
- Lead (8bit style),
- Braids (implementation of Mutable Instruments eurorack module),
- Wavetable (several waves mixed by knobs)

I hope the UI is self explanatory, it is focused on simplicity and uses Ableton-like mini session view to launch clips"

The first prototype was shown 3 years ago on reddit.

It looks like a Dirtywave M8 tracker, but is different in both build layout and function. From the creator:

"M8 is a stunnig device for complex projects, I plan to keep my Vekt operator more like pocket op where you can quickly create sketches/ideas and polish them later on DAW. And the main idea for me personally was to quickly create rhythmic sequences which I can use with my visualization app instead making them in DAW, this will speed up the process."

[$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/"

CLICK FOR MORE »

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."

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."

Quord: Harmony Exploration Machine

video upload by Sound Workshop

"Music to wake up to

Quord is a droning harmony synthesizer. It has four sawtooth oscillators followed by a mixer, filter, and distortion.

Circuit by Decapod Devices. Layout by Sound Workshop. Work in progress."

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)"

This $20 synthesizer sounds very nice indeed

video upload by

"BPSynth is a #diy monophonic #virtualanalog #synthesizer based on a STM32F411 'BlackPill' microcontroller created by @Synthetech . In this video, I show which parts you need, where to get them and how to assemble them, plus some sound impressions. Table of contents:

00:00 short demo
00:07 hi
00:30 parts needed
00:58 were to get and how to install the firmware
02:23 building the BPSynth
04:20 building the MIDI jack
06:50 important considerations
07:14 set up a MIDI controller
07:39 synth engine overview
08:07 demonstation track
11:14 conclusion

Resources [active links here]
Firmware can be found on Blaines' YT channel: @Synthetech
BlackPill STM32F411 board https://de.aliexpress.com/item/100500...
UDA 1334A DAC module https://de.aliexpress.com/item/100500...
5pin midi socket https://de.aliexpress.com/item/330301...
6N137 optocoupler https://de.aliexpress.com/item/100500...
220 and a 10k ohm resistor https://de.aliexpress.com/item/100500...
1N4148 diode https://de.aliexpress.com/item/100500...
Jumper wires https://de.aliexpress.com/item/100500...
Breadboard https://de.aliexpress.com/item/100500...

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

Synthetech videos:

BP Synth.. a DIY Virtual Analog Monosynth

video uploads by Synthetech



BP-Synth Code Tutorials

video uploads by Synthetech

Additional videos on YouTube.

BAF 2024: Dogbotic Labs - Synth Building Workshops

video upload by sonicstate

"At Buchla and Friends 2024, Sonic State had the opportunity to chat with Sean from Dogbotic Labs who offer online workshops for electronics, where participants receive a kit of materials and learn how to build their own circuitry over 10 weeks on Zoom. The workshops have attracted participants from all over the world, fostering a sense of community and collaborative learning. Sean, who is a composer and video artist performing under the name Isorhythmics, emphasizes the importance of experimentation and creativity in electronics, highlighting that it's not necessary to fully understand how things work as long as they can produce cool results.

One of the main workshops offered by Dogbotic Labs is the *DIY Synths* workshop, which teaches participants how to build their own basic synthesizer from scratch. Another popular workshop focuses on building a drum machine with a patchable interface. While the designs may seem complex, Sean encourages participants to customize their creations according to their own artistic visions.

Unfortunately, the kits are currently only available for purchase as part of the workshops, but Dogbotic Labs is planning to start selling the kits separately in the future. https://dogbotic.com/"

dual octaver

video upload by e j

via Optotronics

"The octaver is a great addition to the dual CEM VCO module (the square wave output should be routed to the pulse input).

It's based on the original Thomas Henry's VCO Maximus. It is a perfect tool for generating additional musical fifth or suboctave tones. Moreover octaver 2 input is connected to the output of the octaver 1 for additional divisions! Of course you can use them separately as well. The great thing is that this module allows you to create very interesting soundwaves and rhytms...

According to Thomas Henry : 'The pulse signal is routed to an XOR/flip-flop arrangement which generates an additional musical fifth or suboctave tone added in. You can think of this in terms of harmonics, or if you wish, as a definite harmony playing in tandem, e.g., a C note with a G note mixed in.

The pulse output from the CEM3340 is sent to Schmitt trigger to sharpen up the signal a bit. The firmed up pulse then goes to switch 'interval' which lets you choose between the addition of a fifth or an octave derived pitch. If numbers are your bag, then think of these as divide-by-1.5 and divide-by-2, respectively. On the far end, switch 'octave select' can further halve things to divide-by-3 and divide-by-6, i.e., a fifth and an octave one octave lower yet.

Polarity switch lets you add or subtract the subdivided signal from the original pulse, effectively doubling the number of waveforms possible. The output of the flip-flops is sent to one side of the blend pot, while the other side t is fed by an isolated version of the original pulse.'"

[$5] DIY eurorack modular synth Dual Slew Limiter

video upload by HAGIWO

"My 74th original eurorack modular synth DIY projects.
Dual Slew limiter , I aimed for simple functionality with few components.

working documents ( schematics)
https://note.com/solder_state/n/n09b1...

Please support me to continue projects.
In patreon you will find content about my background , technical information and CAD data.
https://www.patreon.com/hagiwo"

Description (Google translated):

The 75th work of my own modular synth.
One of the most basic modules of a modular synth is the Slew Limiter. Eurorack's most popular module, Make noise Maths, also has this slew limiter function.

I have also created modules with Slew limter functionality, but since I have never created a Slew limiter itself, I decided to create one.

Product specifications
Eurorack standard 3U 6HP size
Power supply: 15mA (+12V), 15mA (-12V)

Dual Slew Limiter with two types of functions.
Priority is given to low price and fewer parts.

top of module
Slew Limiter allows you to select the slew rate range from three types.
Select 3 types of range with the toggle switch.
L range: Assumed to be used for slow CV such as LFO
M range: Assuming the use of pitch CV portamento
S range: Assumes the use of an audio frequency low-pass filter
Control the slew rate with Pot.

Supports bipolar input.
Since the accuracy of the output voltage with respect to the input voltage is high, it can be used for V/oct pitch CV.

module bottom
Slew Limiter allows you to set Rise and Fall slew rates individually.
It is assumed that ASR envelope generator will be used.

Supports bipolar input.
Due to the circuit, the accuracy of the output voltage with respect to the input voltage is low. The use of V/oct pitch CV is not assumed.

Meet the NI404 Open-Source Sampler and Sequencer from Soundpauli

soundpauli:NI404 video upload by Jank

"The NI404 is an innovative, open-source sampler and sequencer from soundpauli - nspired by the classic Etch-A-Sketch, tailored for beginners and DIY enthusiasts. Designed around the Teensy Microcontroller and Audioboard from PJRC, this device offers an accessible entry point into the world of music creation.

The NI404 is more than just a musical instrument; it's a journey into the world of sound exploration, perfect for live performances, studio sessions, or simply having fun creating music. Whether you're a seasoned musician or a curious beginner, the NI404 is your gateway to an exciting world of musical possibilities."



via https://ni404.tyng.app

THE OPEN SOURCE SAMPLE-SEQUENCER FOR EVERYONE.
The NI404 is an innovative, open-source DIY sample-sequencer from soundpauli - inspired by the classic Etch-A-Sketch, tailored for beginners and DIY enthusiasts. Designed around the Teensy Microcontroller and Audioboard from PJRC, this device offers an accessible entry point into the world of music creation.

The NI404 is more than just a musical instrument; it's a journey into the world of sound exploration, perfect for live performances, studio sessions, or simply having fun creating music. Whether you're a seasoned musician or a curious beginner, the NI404 is your gateway to an exciting world of musical possibilities.

KEY FEATURES

EASY TO USE.
With its playful design, the NI404 lets users create complex sound patterns without any prior knowledge of musical instruments or equipment. It's perfect for beginners and makers alike.

DYNAMIC CONTROL DESPITE
LESS BUTTONS.
At the heart of the NI404 is a vivid 16x16 RGB LED panel display, paired with three intuitive rotary-push encoders. Navigate a cursor across the grid, where each row signifies a voice and each column a potential note, allowing for up to 16 pitches per note. This feature enables the mixing of up to 8 voices simultaneously.

REAL-TIME INTERACTION.
Adjust samples, instruments, pitches, notes, volume, BPM, velocity, and effects in real-time without pausing. This seamless interaction makes the NI404 an ideal gadget for live performances.

CORE COMPONENTS.
Teensy 4.1 Microcontroller and Teensy Audio board (4.0)
8MB PSRAM Flash Memory
3 Rotary-push encoders
16x16 RGB-LED Panel driven by FastLED
3.5mm audio jack and removable SD Microcard slot
CREATIVE FLEXIBILITY.
Etch-A-Sketch style note drawing
On-the-fly note deletion and sample muting
Adjustable volume, BPM (40 - 200), pattern, and note velocity
Up to 30-second sample length with seamless looping
Use your own samples on the SD-Card - in a simple file structure
Load up to 8 voices / samples (Wav format) plus an additional onboard synth voice
16-bar patterns across 8 pages, totaling 128 bars per song
Save and load up to 100 patterns / songs on the SD card
Autosave and autoload functions
SAMPLES AT YOUR FINGERTIPS:
THE BUILT-IN SAMPLE BROWSER.
Access and manage samples while playing, with support for up to 999 samples on the SD card and the ability to predefine multiple voices as a SampleSet.

FULLY INDEPENDENT.
Operates without a computer, generating all sounds on the device itself. USB powered (5V) and Arduino code is published under the MIT License.

Important: The NI404 does not include speakers or Bluetooth connectivity; headphones are recommended. Because of licensing: please use your own sample files (folder structure is included).

READY FOR MORE.
Potential updates include USB-MIDI In & Out, AI-powered song / pattern generation, WiFi connectivity, and a new aluminium casing.

HARDWARE LIST
Custom PCB - to connect the encoders to the Teensy (but you can also hard wire everything): see Downloads

https://ni404.tyng.app

Rick Holmes Analog Output DIY Synth Modules

video uploads by Analog Output

"Synthesis hardware and software, with an emphasis on DIY projects."

https://www.richholmes.xyz/analogoutput/

KORG Introduces NTS-3 kaoss pad - Build your KAOSS

video upload by Korg

"The Nu:Tekt NTS-3 kaoss pad is a groundbreaking new effects unit, seamlessly integrating the iconic KAOSS XY pad touch interface and the distinctive KAOSS effects into a compact yet powerful customizable DIY kit.

With up to 4 effects playable at the same time and deep editing options, NTS-3 stands as a performance powerhouse, offering unparalleled versatility that elevates your on-the-go performances to new heights."

CLICK FOR MORE »