Strymon DIG v2 Dual Digital Delay review on Juno-6, GS-2, ARP2600m, Matrixbrute

video upload by Knobs & Switches

"I´ve tried the Strymon Dual Digital Relay DIG v2 on some of Keys. The title track was made with a ACE Tone Rhythmn Ace and a Farfisa VIP-600. All the delay Sounds in this Video are only coming from the DIG v2. Other FX and Electronics are a Chase Bliss Lossy & Generation Loss MkII, Strymon OLA, B.Box Modulator, & Opto Compressor, Dreadbox Disorder & Kinematic, Malekko Scrutator, JHS Reverb Tank, Arturia Matrixbrute & Drumbrute Impact, Boss DR-110, Roland Juno-6, ARP 2600m, Yamaha GS-2, CE-20, DX-21 & RX-7 and the Reverb from the Neon Egg Planetarium 3

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

Used Equipment: Apple iPhone 14 Pro Max, Sony ZV-1, Sony ECM-W2BT, Universal Audio Apollo Twin Solo, Steinberg Cubase 13 and Final Cut Pro X"

Metasonix meets Optotronics

August 30, 2024 video upload by Brian Comnes

"A little vid I did to demo what my TS21 clone did to Ewa Justka’s (Optotronics) Triangle synth"

Stereo Lockhart Wavefolder + drum machine // Heretic Machines aka optotronics

video upload by e j

via Heretic Machines aka optotronics

"This is a stereo wavefolder, 10 hp. It can be quite distorted and brutal !
​
It's loosely based on nonlinear circuits wf core (Lockhart cells)
​
This stereo wavefolder allows you to achieve interesting stereo - folding effects even with very basic modulation.
​
Output 1 is normalised to the input 2- this allows you to use it as a single ten-fold wavefolder!

When channels are used separately the module functions as dual 5-fold wavefolders.
CVs (fold and offset) from the left channel are normalised to the right channel - so you can use single source modulation for both wavefolders.
It can sound quite brutal and distorted-10 folds is not nothing!

Perfect for mad panning, distortion effects and FM madness!

teeeeeennnnnnnnnnnn fooooooooollllllldddd"

CLICK FOR MORE »

Heretic Machines represents: Stereo Wavefolder

video upload by e j

Wavefolder + oscilloscope : short demo


"This is a stereo wavefolder.

- 10 hp

-the CV inputs are normalised from left to right allowing you to obtain complex stereo patches with just few modulation sources

-output 1 normalised to input 2, this allows you to use it as a single ten-fold wavefolder!

teeeeeennnnnnnnnnnn fooooooooollllllldddd
more info here: https://www.heretic-machines.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.'"

Optotronics Pre-soldered Mini-Eurorack System

View this post on Instagram

A post shared by Ewa Justka (@ewajustka_official)

  This one in via brian comnes.

  Details below.

Optotronics - Delayed Twin Oscillator

video upload by NOISEBUG

https://www.noisebug.net/

Optotronics Mini-Eurorack System

video upload by e j

"modules include:
1) CEM3340 dual VCO
2) Rungler
3) wavefolder
4) OTA VCA
5)basic dual LFO

more info (detailed docu on each module)
&
purchase here: https://www.etsy.com/uk/shop/Optotronics"

DIY Optotronics modular system

video upload by e j

"built for the 6 weeks long course, which took place at Iklectik, London between 11/21-03/22. The system consists of: VCOs, LFOs, VCAs, VCF, AD, power supply, wavefolder, delay, S&H, rungler. we have also built our own cases and racks. more info here: https://diy-optotronics-modular-cours...

Some of the modules will be for sale at some point in life!"

Ewa Justka Optotronics DIY Euorack System

video upload by e j

"some example of patches.
(listen on headphones)"

Ewa Justka Optotronics Royal Flanger (Delux)

video upload by e j

"I present to you REAL ANALOGUE stereo flanger based on two BBDs.
(also available in mono).

Stereo (delux) version contains:
-two LFOS for clocking BBD (Flanger pitch modulation)
-two separate CV input (deactivate LFOs) for external pitch control (eurorack compatible)
- CV amount knobs (which also control the pitch)
LFOs:
-'manual 'knobs - range of the flanger
-'rate' of the lfo
- sweep - depth

-FDBK knobs (feedback amount) - capable of extreme feedback!! (maximum self oscillation)

- two mono jacks in and out (for stereo version) - 6.35 mm
- two CV jacks - 3.5 mm

available in variety of vintage royal tins, on my etsy store: https://www.etsy.com/uk/shop/Optotronics

Runs on 9VDC+ (not included)."

Triangle into Benjolin Demo

Published on Feb 19, 2019 Brian Comnes

"Chaos Squared....take one chaotic device (Optotronic Trianglle Synth) and pump it into another (Benjolin) and what do you get? HAve a listen, definitely not a happy track, and mostly an exploration rather than a performance per se...."

Triangle Pop

"Just an Optotronic Triangle synth and a Bastl Softpop conjoined in an audio tryst with a bit of H9 reverb

Drone from the Softpop, kick and craziness from the Triangle, single tracked

Enjoy, a good subwoofer or good headphones recommended for this and its not recommended if you are trying to calm down. Pretty dark and chaotic

8-0"

optotronic duet

Published on Jan 14, 2019 Brian Comnes

"Ewa Justka's Optotronics Motherfucker2 paired with her Triangle synth. - The triangle's trigger out is driving the MF2 after a few minutes. and for a brief time the MF2 is pushed into a Schlappi Angle Grinder ....Not a performance piece, merely an exploration of some of the sounds these two friends can make together....enjoy"

Check out Ewa Justka live here.

Some info on the triangle sequencer via etsy:

"Triangle △ synth is 8-step trigger sequencer based on CMOS chips.

it features 8 push button switches for changing the pattern , toggle switch for changing the range of the pitch, 3 knobs: tempo of the clock, pitch, glide. and two outputs: audio and trigger out.

It can play odd, complex patterns, from glitchy unpredictable strangeness to more organised bangers.

tuns on 9V battery which is not included.
needs audio mono mini jacks.

audio recordings here:"

Ewa Justka live @ Cafe Oto, London, 09/09/15

Published on Sep 22, 2015 e j

hand made drum machine, sequencer, voice odder
modified crt
cfl bulb

---

Ewa Justka of Optotronics.

The △ synth by Optotronics

This one is in via brian comnes. △ synth is the latest creation from Optotronics who brought us Oi, Kant! and Scramble Everything. △ synth is available on etsy here.

"Triangle △ synth is 8-step trigger sequencer based on CMOS chips.

it features 8 push button switches for changing the pattern , toggle switch for changing the range of the pitch, 3 knobs: tempo of the clock, pitch, glide. and two outputs: audio and trigger out.

It can play odd, complex patterns, from glitchy unpredictable strangeness to more organised bangers.

tuns on 9V battery which is not included.
needs audio mono mini jacks."

CLICK FOR MORE »

Scramble Everything - Pitch Scrambling Effect from Optotronics

Published on Apr 21, 2018 e j

From the makers of Oi, Kant!

"purchase here: https://www.etsy.com/uk/listing/59534...

Scramble Everything is a strange little synthesiser: both sound generator (it generates random sequences) and an effects unit, a pitch shifter.

The scramble suit in ‘Scanner Darkly’ was “an invention of the Bell laboratories, conjured up by accident by an employee named S. A. Powers... Basically, his design consisted of a multifaceted quartz lens hooked up to a million and a half physiognomic fraction-representations of various people: men and women, children, with every variant encoded and then projected outward in all directions equally onto a superthin shroudlike membrane large enough to fit around an average human. In any case, the wearer of a scramble suit was Everyman and in every combination (up to combinations of a million and a half sub-bits) during the course of each hour. Hence, any description of him - or her - was meaningless.”

Scramble Everything is the scramble suit of synthesisers. Whatever source you use on the input, the output will be completely scrambled, human and non-human speech-like sounds.
The main star of Scramble Everything is the pitch filter effect unit based on robotic voice modulator IC – HT8950 – which can be used either together with the internal random sequencer, or as a standalone effects unit. You can then, following Philip K. Dick, use any input source and scramble the shit out of it. Does the output still contain remains of the original sound? If you want to jump between two realities you can use the special slider that will easily transport you to the other side. Spooky! Can it get more sci-fi? Yes. The filter’s frequency not only can be controlled with the knob, but also with the light. Scramble Everything contains an RGB light source, and its colour sequence (controlled by the internal random sequencer) changes the tone of the filter. The scramble tone then depends on the intensity of each colour (red, green and blue). Additionally Scramble Everything contains three switches for each colour, so you can decide if you want to have smooth or abrupt transitions between the colours.
You can also control the amount of slide between the steps, switch from staccato to legato and vice-versa, control the pitch of the sequencer and its frequency range.
You can also use the random trigger output to trigger external sound sources.

If you want to know more about scrambled realities, please have a look at the Scramble Reading Pack here:
https://www.dropbox.com/s/0gbiwvc7agw...

Scramble Everything runs on either 9 or 12V power supply, 600mA minimum. You can also use a 9V battery.
It has 5.5mm x 2.1mm power barrel (center negative): https://i.ebayimg.com/images/g/czUAAO...

Scramble Everything was designed by Ewa Justka. Some of the conceptual framework of the machine is a result of a collaboration between Ewa Justka and Roc Jiménez de Cisneros."

Oi, Kant! by Optotronics

Published on Mar 14, 2018 e j

"general info:

Oi, Kant! is a sort of drum machine. Sort of. Drum-ish machine, as I like to call it. And it’s a weird one. It has 3 voices: drum, bass line and cymbal, though they all have their own Kant-related names, as do the rest of parts on this machine. It also has a resonant filter which can effectively be treated as a fourth voice.

All of these voices, predominantly based on CMOS semiconductor chips, can be sequenced using one of the built-in sequencers. Yes, sequencerS, plural. Four of them. Why? Well, why not? These sequencers are completely independent but they are synced to a master clock.

Oi, Kant! also offers you an external clock input so you can control the sequencers tempo by sending pulses from other hardware. In fact, all of the voices can also be sequenced from external sequencers, if you’d like to do that.

Oi, Kant! offers individual outputs for each of its voices. Please note there is no master output, so in order to listen to them all at once you need to use a mixer or audio interface.

Oi, Kant! runs on 9v DC (negative tip, 600mA) or 12v DC, and it can also be powered with a 9v battery. The power input socket is located on the top left corner of the board, labelled 9VDC-.

you can buy it here: https://www.etsy.com/uk/listing/60106...

user's immanual, gerber files here: https://www.dropbox.com/sh/i3bxs4qbwy..."

CLICK FOR MORE »

NEW SYNTH: THE SEQUENCING MACHINE by EWA JUSTKA

Published on Feb 21, 2017 e j

"The Sequencing Machine is a pseudo modular diy synthesiser.
Depending on the patch you make you can create different sequences.
This simple yet versatile synth is capable of producing a wide range of weird sounds from watery, noisy rhythms to 8-bit melodies.

get more info and purchase it here: https://www.etsy.com/uk/listing/50031..."