Syntom II eurorack closeup

Syntom II

Back to 2006 It was year 2006 and my electronic knowledge was extending. I’ve allready build a ICL 7107 voltometer and a dekatron spinner, therefore I felt I can do something really complex. One day I saw a Syntom II, an electronic drum synthesizer project printed in Electronics and Music Maker magazine, (E&MM, 1983). I […]

ENVY – LEGO figure showcase module

GF: What does this module do? Me: It shows a LEGO figure. GF: And? Me: Thats all. GF: … (gives me that you-have-wasted-a-week-of-your-life look and walks away). I was inspired by Gieskes “non-musical” modules, like “bottle opener” and “do-not-touch”. My module is a small display window with a iluminated LEGO figure. But not the ordinary one. It comes […]

SDSV hihat expander

It was back in 2014. Thanks to user hidden behind wutierson nickname I managed to finish digital “metallic” sound generator based on the one used in Simmons SDSV hihat / cymbal drum modules.   The story SDSV drum brain was shipped with only 5 modules – bass, snare and 3 toms. Hihat didn’t belong to the […]

Kraft Drum

Kraft Drum (aka V829 Drum) is a Vox Percussion King inspired device. VOX PK is quite rare drum synthesizer from about 1967. The most noticable use was on Kraftwerks track called Autobahn – you just cannot miss this punchy and somehow distorted bass drum.   The circuit First, I got some lovely Vox Percussion King […]

Euro Multipla

Evil’s soft first touches This eurorack multiple project was an excuse to use a controversial quality PJ3410 mini Jacks I bought online (very similar ones are JG3530-2381-000-03, Lih Sheng LJE0352 or CLIFF FC681374V). For 50 pieces I’ve got, 8 was unusable (after I put a Jack into it the internal contacts fell on the other […]

HC-2 handclapper

Not everybody needs an 808 Some time ago i started a DIY handclap project. The design was not based on Roland TR808, but Boss HC-2 (or Amdek HCK-100, if you like). With some problems I completed the prototype and made an eurorack module – it works really well.   The circuit Boss circuit is different […]

Hip Bass Drum

Hip bass drum is project brought to you by Craig Anderton. Compared to other drum circiuits it’s very simple (but unique) design. The schematics scanned form Polyphony, October ’83 can be found all over internet (but if you have any problems getting one, call me). It is hard to find any clear demo of the […]

Modular synth power supply

This  article was updated  slightly on 21.05.2018 and includes filtering capacitors change and some output voltage measurements.   Introduction Every modular synth needs a power supply (except systems containing only blanks and Giskies 12 HP Bottle Openers). Switched power supplies sometimes cause problems (when you have a lot of small modules, all with input power […]

SDSV voice board

There is a story behind this module. Using my countless stupidity, i menaged to broke both hands while riding my bike. After that, i had a lot of free time, but i wasn’t able to many things. With some training i menaged to master computer mouse with partially plastered hand and keyboard striked with pencil. […]