
Simple AR Gen is an old Attack-Release (or Attack-Decay) Eurorack module project.
Continue reading Simple AR Gen
Category Archives: Simple Modules
Simple VCF

The Simple VCF was an early attempt to replicate the low-pass/high-pass filter from the original MFOS Sound Lab Mini-Synth.
Continue reading Simple VCF
Simple VCA
Simple VCO – Update 1.0
The Simple VCO belongs to the same series as the Simple LFO.
It’s a very stripped down version of the Formant VCO, modified and adapted to the Eurorack format.

The Simple VCO is 1V/Oct capable. In order to reduce the number of parts, only one waveform output is available.
It is a super simple module, easy to build, to understand and maintain, yet fun to play and musically accurate.
Continue reading Simple VCO – Update 1.0
Simple LFO 1.5
The Simple LFO is a… simple LFO module for your Eurorack system.
Two waveforms available: Triangle and Square wave. Adjustable amplitude and Low/High range switch.
It’s easy to build, easy to understand and maintain. Only easy-to-find through-hole components.
Simple VCO – Update 0.2
The Simple VCO belongs to the same series as the Simple LFO.
It’s a very stripped down version of the Formant VCO, modified and adapted to the Eurorack format.
This is the updated documentation for version 0.2.

The Simple VCO is 1V/Oct capable. In order to reduce the number of parts, only one waveform output is available.
It is a super simple module, easy to build, to understand and maintain, yet fun to play and musically accurate.
Continue reading Simple VCO – Update 0.2
Simple LFO 1.4
The Simple LFO is a… simple LFO module for your Eurorack system.
Two waveforms available: Triangle and Square wave. Adjustable amplitude and Low/High range switch.
It’s easy to build, easy to understand and maintain. Only easy-to-find through-hole components.
Simple VCO – First prototype
Following the Simple LFO module, here comes the Simple VCO.
It’s a very stripped down version of the Formant VCO, modified and adapted to the Eurorack format.
This circuit is also present in the VCO section of the DM77 Drum Module.

The Simple VCO is 1V/Oct capable. In order to reduce the number of parts, only one waveform output is available.
The result is a super simple module, easy to build, to understand and maintain.
Continue reading Simple VCO – First prototype
Simple LFO 1.3
I released a new update of the Simple LFO, now in version 1.3.
The update is mostly about how the LED blinks.
Simple LFO 1.2

This is an update of the Simple LFO module.
The major improvement is the implantation of an amplitude potentiometer on the PCB.
Continue reading Simple LFO 1.2

