I built this neat little LFO from Frequency Central. I had a need for some smaller LFOs to use in racks built for improvisation, so I got two kits for … Read More

Marsupial is a Dual AS3350 Voltage-Controlled Filter from SetonixSynth. I don’t use filters often in Eurorack, but I built this one for my Noise Rack (next post). I like the … Read More

EuroKastle is a Eurorack version of the Bastl Instruments Kastle or Drum Kastle Synth. This is the third PT Modular semi-kit I’ve purchased from Calsynth. It comes with a full … Read More

Another easy DIY module from Calsynth, the Stereo Total. It is a manual mono to stereo and stereo width controller. The first block A is a Stereo Simulator that creates … Read More

I discovered that Calsynth offers populated PC boards for many ST Modular modules, which are all DIY. The cost for both populated PCBs plus the panel is only $59 plus … Read More

Toppobrillo’s TWF was designed in 2010 and is now discontinued. But you can still build one. SynthCube sells the PC board with several different panel options. I chose the black … Read More

Modules for DIY in Eurorack use 3.5mm mono jacks that come in three basic types, each with a different PCB footprint. The part numbers for each of these is different … Read More

Rubin Sponar, the module designer, posted the following mods. R2, R3: change from 100k to 110k for offset of Triangle output, also improves sine roundness.R85, R92: change from 100k to … Read More

This post will cover the DIY build from a factory kit of the Beast-Tek Double Dragon Dual LFO. I bought the full kit from synthCube. Double Dragon is a digital … Read More

This post covers New Systems Instruments Inertia in High range, i.e. for use as an oscillator or filter. For audio oscillation, mode is usually set to Skew, which allows frequency … Read More