Latest Posts

Small Stone Clone mod part2: Univibing

The first mod will be getting this “Univibe” hack: http://www.lynx.net/~jc/pedalsSmallStone.html The idea is to emulate the “Univibe” effect using the four CA3080 OTAs on the clone, getting both flavors.As explained in the link I must add another set of caps plus a switch per 3080.Fortunately my breadboard build had just the physical space need to throw 4 caps and four…
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Electro-Harmonix Small Stone Clone rework

It’s been a while since I wanted to rework my Small Stone clone aka the Piedrita by Tonepad. This is still on a breadboard but it works well and it’ll be easy to start messing with those 6.8nF caps when there’s no solder involved. Right now here is how it looks and sounds like:

BR-808 Hi-Hats euroracked

Following my goal of standardizing the stuff I built previously to be compatible to the Eurorack standard, I had this 808 Hats clone redone: Here is a little demo:

Eurorack Bus & PSU

I need to build something to power the new stuff, at least the BH-101, its waveform mixer and the Midi2CV interface. According to the Doepfer Eurorack specs, the pinouts go like this:I’m gonna go for the full 16 pin version, as I might need the +5V bus sometimes. I thought of something like this, which is gonna use my DP832…
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BH-101: Euroracked

To easily integrate the BH-101 amongst other instruments, I had to choose between the standards available. I went for Eurorack aka the Doepfer A-100 system. A bus with +12V, -12V and +5V is really the core of it, along with physical dimensions to fit in the racks. Eurorack requires a faceplate of 128,5mm x a multiple of 40mm, drilled with…
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Midi2CV-Connecting worlds!

I was not sure this would be a very interesting build as it is not a sound generator per se, but it still will gonna save me the 150E it costs to get a nice commercial Midi 2 CV interface. This looked like the best DIY project I’ve found, it comes complete with the arduino code and all: https://github.com/elkayem/midi2cv It…
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BH-101 Synthetiser

This is my first “real” voltage-controlled synth build using the CEM3340 clone the AS3340: https://electricdruid.net/cem3340-vco-voltage-controlled-oscillator-designs/#comment-20138 The CEM3340 was the oscillator used in the famous Roland SH-101 and MKS-80. It has 3 waveforms: Ramp, Triangle, and variable-width Pulse. In my build I added a white noise generator, the Noise1B from ED: https://electricdruid.net/product/noise-1b-noise-generator/ I’m mixing the 4 outputs with a GrandMixer DIY,…
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BB BP-1 Filter

Next on the list is building great filters, both resonating High and Low Pass, voltage control is a must if I want this to integrate further on a CV controlled system. I found this great component manufactured by Alfa and distributed by Electric Druid: the AS3320, a clone of the CEM3320 as featured in the Sequential Pro-One and the Oberheim…
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B-Board

I just put together all the units I’ve been building. I just sticked the SSS sequencer, the PT39 delay, the 3080 Phaser, the Grand-Mixer, the 808 Kick Clone and the Nano-B synths onto a piece of plywood. Here is how it sounds through my iPhones mic and Youtube audio encoding.