DIY Kits

The 10HP wide Oakley Croglin Voltage Controlled Filter (VCF) is based around two low noise ‘Sallen-Key’ filter circuits that operate either together or against each other. The cut off frequency of...

This is a 10HP wide four pole multimode filter module capable of -24dB/octave low pass, -12dB/octave low pass and +/-6dB/octave bandpass outputs simultaneously. The filter core is based on four...

The 14HP wide Oakley Dual VCO, or DVCO, is two traditional sawtooth core voltage controlled oscillators in one module sharing a single common 1V/octave input. Each oscillator features a sawtooth...

The 6HP wide Oakley Envelope is an easy to use four stage envelope generator with switchable looping mode. The ADSR is operated by a traditional gate signal, but can also be triggered by slow rising...

"You can NEVER have too many VCAs!" A widely recognized mantra across the modular syntheszier community-- and a bit of history, the term was first coined by Oakley Sound founder Tony Allgood many...

The 6HP wide Oakley Sound Eurorack Multimix is highly useful mixer module that can be used to process both control voltages (CVs) and audio. It is based on the original ‘Stooge’ version of the Oakley...

From the manufacturer: The AI028 Voltage Controlled Matrix Mixer is a 6-input, 6-output Matrix Mixer, with 36 VCAs to control how much each input is fed to each output (0-5V). The Module can...

From the manufacturer: Nonlinearcircuits Sloth Chaos This is the original Sloth with aluminum Clarke68 panels. For the NLC version or the bare PCB, see here. For the triple C68 panel, see here. There...

From the manufacturer: Nonlinearcircuits Sloth Chaos This is the original Sloth Chaos PCB. Although the NLC panels read ‘Torpor’ the PCB can be built to use any of the three speed options.  For other...

From the manufacturer: 4HP Neuron Description/Usage This module is a 4HP version of the

From the manufacturer: DACTROL Description/Usage 4hp This is a design by Tom Hirst (who also designed the NLC Snake Joke module). His description for the design is:

From the manufacturer: Bulbous Also Tapered VCF 8hp This module uses two SSI2140 chips, one as a 4 pole high pass filter, the other as a 4 pole low pass filter. Both sections have voltage c

From the manufacturer: The Shaver Mystery 8hp This module contains two BBD based Flanger circuits. One is set by a pot, the other is voltage controlled (or just set by a pot). The intention is to...

Two flavours of noise, one is pretty standard transistor white noise and the other isn't really noise but a buzzy mix of 6x 40106 oscillators mixed together. Both make good starting points for...

This is a simple AD or AR envelope generator with a handful of novel extras tacked on. There are two main envelopes with manual control over rise and fall times (sorry, no voltage-controlled rise or...

From the manufacturer: 8-channel rising edge detector aka gate-to-trigger converter. Also has OR-combined outputs for ODD, EVEN, and ALL channels, 'enable' inputs for gating/muting the OR-combined...

From the manufacturer: 8-channel rising edge detector aka gate-to-trigger converter. Also has OR-combined outputs for ODD, EVEN, and ALL channels, 'enable' inputs for gating/muting the OR-combined...

An MS-20 filter clone with red LEDs (not the recommended green), stereo filtering with independent resonance, a blend knob for morphing between LP/HP, and analog noise that makes everything feel...

IMMIX Description/Usage 6hp This module is based around the SSI2190 6 stage VCA/Mixer. The

Path Filter Description/Usage 8hp This module sits somewhere between a filter, a phaser, and a crude BBD ana

GooGooMux Description/Usage 4hp This module is a simple mux / demux using the 8 to 1 or 1 to 8 DG408 analogu

Demux Phaser Description/Usage 8hp This module is a ‘digitally’ controlled phaser. Instead of using a CV to control the phasing, i