nonlinearcircuits beat freq

Published on Aug 1, 2019 cirtcele

"Just trying out the proto-type. 2 beating VCOs drive the circuit, the output gate and CV are used to turn on and control a 3rd VCO."

New giant B0N0 from nonlinearcircuits

giantB0N0 Published on Dec 21, 2015 cirtcele

"The offspring of a vactrol PiLL and a DelayNoMore. Using 4 outputs: mix out is straight to the mixer, two others are via LPGs, the 4th is used to CV the LPG cutoff."

"PCBs and panels available in late January"

Update:

giant B0N0 2

Published on Jan 27, 2016

"more giant B0N0, really kicks off about 30s in."

quo2

Published on Mar 30, 2014 cirtcele·122 videos

"Short vid of Quad Oscillator / Low-pass filter in action. Nonlinear feedback pot is most effective at animating waveforms when used as a filter"

nonlinearcircuits STATUES 8 way multiplexor

Published on Apr 27, 2018 cirtcele

"This is an 8 way multiplexor with a track and hold circuit on each output."

via nonlinearcircuits

PCB = USD18
Panel = USD20
Assembled = USD160

nonlinearcircuits BOOLs

Published on Jun 19, 2015 cirtcele

"This module is like a hybrid between the NLC quad logic module and the Sauce of Unce. There are 4 inputs driving chained logic gates (you can choose what logic you want - OR, NOR, AND, NAND, XOR or XNOR by the chip installed). There are 4 gate outputs giving the boolean logic result of the signals on inputs 1&2, 2&3, 3&4 and 4&1. A resistor ladder network gives the stepped output based on what these 4 outputs are doing. From this a S&H circuit with a slew processor gives a smooth output."

BOOLs 3

via nonlinearcircuits

"These are nice. The inputs can be any signal crossing 1V. The logic outputs give 5V gates that are all related to each other as made up of different input combinations. The S&H input can be a trigger, gate or CV. The stepped and slewed outputs an be very similar to what comes out of the Sauce of Unce or Buchla 265 SOU. The ICs are all thru-hole, resistors can be 1206 or 0805 smd. Pretty easy build, has 4 LEDs for blinkenlights.
Using different logic chips gives you some pretty different behaviour so it is worth having more than one of these. The XOR/XNOR chips cn be used as crude ring modulators at audio frequencies.

This is a great module for just patching in any spare outputs from LFOs, sequencers, ADSRs, etc and generating a whole bunch of gates and CVs that are sync'd with everything else going on in your patch.

PCBs - US$18
panels - US$20
airmail - US$5 per order"

FFchaos

Published on Oct 24, 2014 cirtcele

"This chaos circuit uses a flip flop as the nonlinear element. It has a gate and CV input, three gate outputs which give varying length gates, a trigger output and 2 CV outputs. In this patch the FF Chaos is fed a square wave and a tri wave from 2 LFOs. The two CV outputs are used to CV two VCOs and the gate outputs control two EGs which are controlling two LPGs. Extra footage is from the PUBLIC DOMAIN 1930 movie - Hell's Angels. The scope shots show the input squarewave in the upper trace and one of the CV output signals in the lower trace."

double jerkoff

YouTube Uploaded by cirtcele on Nov 29, 2011

"Trying out half of a double chaos module. Outputs are controlling an early Serge VCO and 110 vari-BW VCF."

cellF voice 3, chopper 1 & hyper wien 1

Published on Oct 20, 2014 cirtcele

"5 or so 2 minute excerpts from a 1 hour patching session. All sounds and CVs generated by the cellF panel"

chopper 1

Published on Oct 20, 2014

"having fun with the Chopper, an analogue switch that switches depending upon the voltage levels of the 2 signals passing thru it."


Published on Oct 20, 2014

"hyper chaotic circuit controlling VCO & low pass gate"

nonlinearcircuits cellF voice test

Published on Jul 15, 2014 cirtcele

"1st patch with the 84hp eurorack panel - 2 tri-core VCOs, 2 low pass gates, 2 EGs, Sauce of Unce, 3 VCAs, 2 LFOs, VC Reverb, difference rectifier, chaos."

Neuron1

YouTube Uploaded by cirtcele on Nov 4, 2011

"very simple analogue neuron circuit modded for synth use. In this vid, the neuron is fed Tri waves from 2 CGS LFOs. The output is used to modulate the cutoff in a vari-BW VCF.
Schematic is here - http://www.sdiy.org/pinky/data/neuron.html"

super sloth

Published on Sep 13, 2014 cirtcele

"Slow version of the SLOTH CHAOS circuit. This one takes 15-16 minutes to complete a cycle. If you adjust the pot it can take up to 30 minutes to an hour for any change to occur in the pattern. A very suitable module for all day listening."

nonlinearcircuits BBX291 VCF

Published on Apr 3, 2020 cirtcele

"Vari-bandwidth VCF based on the Buchla 291, tho the CV sections are completely different and it uses a black box between the PCBs instead of dual vactrols.
https://www.nonlinearcircuits.com/mod..."

optocoupler based dual ladder VCF - testing

Published on Oct 17, 2013 cirtcele·97 videos

"Listen with good headphones or speakers - lots of bottom end!
This circuit is still quite rough and I haven't settled on all the component values yet. It uses dual opto-coupler ICs - LED to transistor - to form two ladder VCFs. One is a diode ladder similar to the EMS design, the other is similar to the TB-303 transistor ladder, with many parts left off.
The diode ladder gets the audio input and the LEDs transfer the audio over to the transistor ladder, so both VCFs run in parallel but can be tweaked individually. The PCB version will have individual freq CV inputs and a 'both' CV input.
The outputs will be available separately plus a mixed output and possibly a difference output; only allowing the parts that are different between the two signals. It goes without saying the mixed output simply blows chunks!"

Volca Beats controlled by VCO

Published on Nov 7, 2013 cirtcele·103 videos

"Output of VCO connected to 'sync in' of Korg Volca Beats. The VCO is controlled by a nonlinearcircuits CA sequencer so output varies but the sync in signal ranges from approx 90 000 to 600bpm. At higher speeds the Volca craps out and stops until the signal slows down. Once again it is not pretty, but it is fun to explore the boundaries of this device."

KORG Volcas on eBay

nonlinearcircuits I can't believe it's not a VCO

Published on Apr 10, 2019 cirtcele

"VCO/VCF based on concepts presented in Electronotes #132."

via nonlinearcircuits

"PCB set = USD20
panel = USD20
assembled = USD180

This module is based on ideas presented in Electronotes #132. It is a VCF with a 'filter exciter' section to allow a wide variety of acoustic, semi-acoustic and not-acoustic-at-all sounds. In a sense it takes the concept of pinging the LPG or ringing a VCF one step (or 2) further. The decaying sound is fed back into the input via a VCA. The VCA can be controlled by a gate or an envelope (or both).
Another interesting point is higher frequency sounds tend to be louder.....which is what happens naturally in the big room."

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nonlinearcircuits dual ota VCO

Published on Aug 5, 2014 cirtcele

"Short demo of the pulse from the dual OTA VCO. This will be the project for the August 2014 WAMOD synth DIY workshop. A very simple design that is easy to build and does not require transistor matching. Definitely not the most stable or accurate VCO ever, but very useful and easy to use."

nonlinearcircuits Signum Hyperchaos 1

Published on Jan 4, 2019 cirtcele

"This is an expansion of Primal Hyperchaos, based on the description in a paper by C Li, et al. The internal signum switch has been brought out to the panel. It can be used as a stand-alone switch (don’t expect it to be clean and nice) or it can be used to inject signals into the hyperchaos circuit or control the switching of the hyperchaos."

See this post from 2017 for additional details.

nonlinearcircuits Null A & friends

Published on Jun 27, 2019 cirtcele

"Not really a demo. I was testing a Null-A built for a customer and ended up with a fun patch. Added in a Doof, Badum Tiss and Resonate for persussive sounds. All gates and CVs from the Null-A"

cellF action delay no more

Published on Dec 4, 2014 cirtcele

"1st play with this panel
Some more info here - http://nonlinearcircuits.blogspot.com..."

cellf action & voice 2

Published on Dec 7, 2014 cirtcele

"Having more fun with these two panels, plus a bit of help from Bill"