HEAR IT IN ACTION HERE: http://yomo.interzen.co.uk/samples/resonant-bp.mp3
BOM and panel fab files can be found at: http://yomo.interzen.co.uk/kits/resonant-bpf/
This is the rejigged PCB that will ship with my forthcoming full BPF kit - it's ideal if you want to source your own components and fab your own panel.
This is not a full-fat, voltage controlled behemoth but rather something that is easy to use and control whilst at the same time doing weird and wonderful things to your sound. There's an input and an output, plus two pots - one for cutoff and the other for resonance - self-oscillation and shrieky feedback are definite possibilities with this, and it's quite possible to use it as a resonator too - it can really fatten up bass sounds.
Granted, it's a pretty touchy beast but place nicely with it and it will reward you with some interesting sounds.
100% through-hole construction - no surface mount parts or wilfully weird/rare components and a relatively low parts count. It's a simple module but will do interesting things to your sound.
On ordering, you will receive a link to a BOM (Bill Of Materials) and a couple of files which should allow you to fabricate your own panels. How you actually mount the board is entirely up to you, although it is designed to fit behind a 4HP (20mm) wide panel with the board parallel to the panel. The board itself measures approximately 100mm x 17mm
These boards have a HASL (Hot Air Surface Level) finish which is not lead-free - exercise common sense and don't go licking the solder pads and you'll be fine.
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I've been a musician for a while now - up until quite recently my weapon of choice was a bass guitar, but having fallen down the rabbit hole that is modular synthesis I have a new way to make noise ...
I started out the usual way: buy a rack and a bunch of modules (ADSR, VCA, VCO, that kind of thing) and start making noises. Then I discovered the DIY scene and it all snowballed from there - sequencers, filters, logic modules ... four racks full of noisemakers later and I'm still not done.
I'm a big believer in the KISS principle - Keep It Simple, Stupid! If you want all-singing, all-dancing multifunction modules then this really isn't the place for you - I prefer to build modules to do one thing and (hopefully) do it well. This is a rule I follow when I develop software, and hardware is no different.
The stuff you'll find here will generally be 'excess' from a run of boards - the underlying designs will have been tested and known to work, all you need to do is source appropriate componentry and do a build. I'm not going to make any claims that I'm the world's best circuit designer, but hey, if it ain't broke ...
For the really curious, despite working as a software developer I do have a PhD in theoretical physics, specifically the numerical simulation of explosions. It isn't nearly as interesting as you might imagine :-p