Nonlinear Circuits Squid Axon shift register module. Black panel as standard, but I'm keeping white panels in a rotating stock now :) Please contact me in advance to check availability!

This is a brand-new module with 14-day returns* and a 1-year warranty** included.

• hand built using professional manufacturing techniques; desktop reflow oven
• RohS compliant, lead-free solder
• high quality WQP518MA jacks, rated for 20k cycles
• Tayda potentiometers
• Davies 1900h style knobs, Mustard
• genuine, high quality components purchased from Mouser Electronics
• reverse polarity protection and visual indicator of -12v pins
• supplied with 2xM3 Befaco Knurlies and 25cm 10-16pin power cable
• finished with a red and black Pushernuts on the clock and third signal inputs respectively.

Brief description of functionality:

A four stage Analogue Shift Register with linear and non-linear (of course!) feedback! With each clock pulse received, the voltage of up to 3 inputs is sampled, held and passed along to the next stage, each with its own independent/parallel output. When combined with quantizers, ASRs can be used to create sequences and chords as well as Rungler-type patches whereby a VCO/LFO clocks the ASR while also modulating the VCO/LFO FM input/s. The module is a fully analogue, DC-coupled design and can be used at CV and audio rates, without aliasing.

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Full description from the NLC site:

Just the module everybody has been waiting for! A squid brain cell simulator!

The Squid Axon is a circuit based on the Hodgkin-Huxley equation describing the chaotic behavior observed in giant squid axons. The inspiration for the module came from a 2003 paper by T. Matsuzaki & M. Nakagawa, titled 'A Bipolar Logistic Chaos Neuron and Its Hardware Implementation'.

Basically it is a four stage analog shift register with two feedback paths, one nonlinear and one linear (I do try to walk the line). If you turn the feedback paths down to zero, you get a regular ASR. Turn up the feedback to get more complex and staggered patterns from the 4 CV outputs. It will happily run at audio rates as well.

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*Buyer pays return postage and is liable for loss/damage during transit.

**Usual manufacturer warranty terms e.g. random component failure. Accidental damage, including over voltage, and wear and tear etc. not covered. I want the modules to last and not end up in landfill though, so please contact me for reasonable or possibly even free repairs, depending on the severity of the problem.