Saturday, 14 October 2017

Hyperchaos Deluxe

PCB set = USD23
Panel = USD22 
assembled = USD220

Hyperchaos Deluxe is based on the description in A UNIQUE SIGNUM SWITCH FOR CHAOS AND HYPERCHAOS by C. Li et al and is an expansion of the circuit used in Primal Hyperchaos. 

There are 10 different CV outputs and 2 gate outputs. The CV IN is associated with the CLIMAX pot which determines how high the peaks go. The module can be greatly influenced by the CV in signal and can exhibit some fairly nutty responses at times. 

The Rate input can be used in a few different ways:
1. With nothing patched in the circuit operates in slow mode
2. With a cable patched in, but its other end hanging loose, the circuit operates in fast mode.
3. Feed a gate signal to the Rate input and the circuit will vary between fast and slow modes (gate high = slow)
4. Feed a fast clock signal and you can get the circuit to operate at different speeds. This is quite dependent upon the frequency of the incoming clock and can take some tweaking to get right. If the clock is too fast it will mainly appear to be in slow mode.

Probably 3 is the best option as you can have the CVs cruising along and then suddenly going nutso when the gate ends.

Sly Grogan

Panel = USD20
assembled = USD170

SLY GROGAN is an envelope generator based on the design in Electronotes #86. It can produce a wide variety of different envelopes and bursts, perhaps most interesting is the ability to have the envelopes ringing after the attack stage. It also works well as a voltage controlled LFO, tho the module is neither a LFO nor a regular ADSR.
Please note: it no longer contains a VCA, this was dropped in favour of tapping the extra outputs (2&3).

Divide & Conquer

PCB set = USD22
panel = USD20
Assembled = USD190

This is a clock divider module containing 4 different dividers:
  1. /2, /4, /8, /16, /32, /64, /128, /256
  2. /1.5, /3
  3. /2.5, /5
  4. /3.5, /7

All sections will run off a signal patched into section 1.
The module can be patch-programmed to obtain other divisions. For example; patch output /2 into section 4 to get divide by 14 from the /7 output.
The circuit is CMOS based and contains no microprocessors.

This module is intended to be a companion module for the Bindubba Sequencer.

Saturday, 22 July 2017

Bill's cellF synth

This is the last Voice panel (still a few Action panels left). Bill put it into a nice case (design and laser cutting by nathanxl:

Sunday, 16 July 2017

New merch designs

For Australia - go here
For EU -  go to EU Spreadshirt
For North America and everywhere else - got to US Spreadshirt

 For most items you can choose your own colours

Thursday, 13 July 2017

PRIMAL - Hyperchaos

PCBs - USD18
Panels - USD20

Hyperchaos circuit based on a paper by C Li, et al. It can be built to run at different speeds simply by installing different capacitors. Very easy build, no special components needed.
There are 5 different CV outputs and 1 gate output. The CV IN is associated with the CLIMAX pot which determines how high the peaks go. The module can be greatly influenced by the CV in signal and can exhibit some fairly nutty responses at times.

Build guide & BOM

Tuesday, 4 July 2017

ARSEq - 10HP eurorack version

Panel = USD22
PCB set = USD23

Build guide & BOM

Panel template

The ARSEq ( = Attack Release SEquencer) is, as the name implies, a hybrid sequencer and AR envelope generator. It contains a counter circuit with reset, 4 envelope generators and a mixer/inverter stage to get the sequenced output. The envelopes can be inverted if desired to give a greater voltage and complexity range of the output sequence. The individual 4 envelopes are available on the panel as well.
The main difference with this circuit and a regular EG is each envelope requires 2 clock pulses, one to start the attack and the next to start the release stage.
Yes the pots on the panel are a bit tight at 10HP, I should have made it wider, maybe I will one day? In the meantime it is best to build this with knurled shaft pots and find some narrow knobs to attach (Thonk have nice ones).