XO106r5: Quad square-wave drone module with patchable logic and filter - BLACK version (22HP)
Due to the compliance requirements of the European Union GPSR (General Product Safety) Regulations I am currently unable to ship to the following destinations: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland (including Northern Ireland), Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden. In addition, I am unable to ship to Norway, Iceland or Liechtenstein.
THERE WILL ONLY BE 5 MODULES IN THIS RUN - WHEN THEY'RE GONE, THEY'RE GONE (until next time)
The XO106r5 is a logical progression from its predecessors - although it no longer contains any 40106 ICs, it's still a good source of square-wave glitchiness along with a filter should you want to round off some of the rough edges.
It's also a lot bigger - 22HP, and it comes with a cool black and gold faceplate.
The salient features are:
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4 AVR-based square-wave oscillators with V/oct response good for around 5 octaves. There are fine-tune pots on the back side of the PCB. It won't give you perfect tracking, but it's 'good enough' (don't like it? hack on the firmware)
- Voltage-controlled pulse width for each oscillator
- Oscillator firmware is available under a permissive license.
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Patchable Sallen-Key low-pass filter - use it, or don't; it's something of a nod to the previous incarnations of the module (note that this is not a VCF - if you want that sort of thing, you can easily patch to an external filter module)
- Patchable logic matrix - this is the big step from the previous versions. The oscillators are no longer hardwired to the logic IC; you can patch things together how you want, or not at all. The logic IC itself is socketed so you can replace it with a different, pin-compatible, IC should you wish to change the voicing of the module. The 'default' option is a CD4070 (quad XOR) but alternatives include the 4001, 4011 and 4093.
The terminally curious can view Johnny Beaver's demo of a prototype unit in action on YouTube ...