Zetaohm Announces Fluxus One Voltage Sequencer For Eurorack

On Kickstarter now, Fluxus One is a four channel, sixty four step voltage sequencer for Eurorack. This sequencer features 4 gate, pitch and modulation outputs, per-step LFO sequencing, and much more.  

After two and a half years of development, Zetaohm have brought their wacky-looking space invaders style hardware sequencer to Kickstarter. At time of writing it's already received 56% funding in just one day.

You can pick up a Fluxus One as an early-bird for $575 USD. 

Here's some details from the Kickstarter campaign about Fluxus One:

Adding Fluxus One to your modular is an instantly gratifying experience. It highlights the capabilities of your existing gear, and provides you with a fine precision tool to simultaneously control multiple facets of your modular patch. It will help you to bring more pythagorean musicality into your system, or allow you to embrace utter chaos with its modulation and microtonal capabilities. We have worked very hard to bring a concept to life.

Four channels, sixty four steps

 Each output channel can send one gate, and two CV signals. Each CV output range is 20Vpp. Each pitch output is quantized, and will sequence over a user definable 10V range anywhere within the 20V swing. In a world of analog and digital modules, each with unique CV input requirements, the Fluxus One will allow you to adapt the output voltage to the range of the module you are sequencing. Each channel can behave as an independent sequencer, and can be externally clocked from individually. Per channel settings include step length, clock division, scale quantization as well as input modulation mapping.

Four gate outputs, four pitch outputs, four modulation outputs

FLXS1 Voltage Monitoring

An Analog Devices AD5676 16-bit Octal nanoDAC+ drives eight control voltage outputs. four are dedicated to pitch, and four are dedicated to modulation. Modulation outputs can trigger an arbitrary voltage level, send tempo synced or free LFOs or even send an envelope signal (in development). The variable glide circuit (as described in the next section) allows LFO and envelope signals, while being digitally generated, to be as smooth as an analog signal source.

Sequenced LFOs + envelope generators

Per-step LFO sequencing means that you are able to change the amplitude, frequency and waveform of four separate LFOs on any step. Envelope generation is also in the works, allowing you to trigger attack, sustain and release envelopes on each step.

Programmable analog glide switch

The above gif shows the CV output of a sequence, which has glide turned on for some steps, as well as smooth sinewave LFO signal from the first channel.

Each CV output signal path contains a dedicated variable glide circuit with a resolution of 256 levels of glide duration. This circuit is switched, so when glide is shut off, there is truly zero slew during voltage change. The glide circuit is also used for LFO smoothing, allowing the Fluxus One to create perfect sinewave signals. The maximum glide time for each step around 5 seconds. See Kraftwerk: Metropolis.

Per-step arpeggio settings

Each step can trigger an arpeggio with a user-defined pitch, length, direction, speed, octave range and interval. The gate signal can be triggered as a one hit or held open for the duration of the arpeggio. Arpeggios can also overlap. This feature enables the user to quickly create complex sequences with very few steps. 

Four assignable gate inputs + Four assignable CV inputs

Fluxus One has four gate, and four CV inputs. Input signals can be mapped to various modulation destinations through channel specific configuration. Input mappings will include random pitch, play direction, reset, go to random step, gate inversion, X + Y axis advance, glide modulation, glide invert, pitch transposition, arp type, arp speed, arp octave and arp interval.

MIDI input and output

Fluxus One synced to an Elektron Rytm as the MIDI clock source.

Fluxus One has MIDI input and output via two 3.5mm jacks on the front panel (3.5mm <-> 5-pin MIDI cable sold separately). MIDI sync input and output is currently supported for outboard gear. Future plans for MIDI include a method of composing sequences with MIDI keyboard, as well as other MIDI controller based performance modes. MIDI output to other synthesizers is planned as well. 

Front-facing USB port

The front-facing MicroUSB port allows users to sync with MIDI over USB, backup sequencer data to a computer using SYSEX, as well as update system software. 

Custom-designed silicone buttons

Twenty eight beautiful, RGB illuminated, 280 gram force, semi-transparent, silicone buttons have been custom-designed and prototyped by hand for Fluxus One. 

Open source design

The Fluxus One OS is currently available on github, and will be open source from day one. Once Fluxus One sales cover development cost, the entire schematic and PCB design files will be made open source as well. The OS runs on Teensyduino by Paul Stoffregen of PJRC.com

Delivery for Kickstarter funders is July 2017.




Rounik is the Executive Editor for Ask.Audio & macProVideo. He's built a crack team of professional musicians and writers to create one of the most visited online resources for news, review, tutorials and interviews for modern musician and producer. As an Apple Certified Trainer for Logic Pro Rounik has taught teachers, professional... Read More


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