My designs are indicated with a superscript¹
Modifications of existing designs are indicated with a superscript²
|5U Benjolin New||CVS eight channel module¹|
|Jürgen Haible "solina" triple chorus New||CVS 2x16 LCD display¹|
|Ian Fritz DoubleDeka VCO² New||CVS four channel module (PSIM software compatible)¹|
|5U E950 Circuit Bent VCO New||CVS Kurzweil ribbon controller¹|
|CGS-35 Steiner VCF²||Synthmodules.com PSIM and SpeakJet²|
|Moon Modular M569 companion¹||CVS and PSIM I/O expansion module¹|
|Thomas Henry mega percussive synthesizer||CVS and PSIM Programs¹|
|5U E560 deflector shield||Arduino-based ComputerVoltageSource¹|
|Barton dual quantizer²|
|OMS-820 lag companion||Synthesizer Restoration and Builds|
|DJB-021 pan-crossfade²||Aries modules|
|5U Buchla 266 source of uncertainty²||Buchla modules Updated|
|Flight Of Harmony plague bearer||Fonitronik mh21 Triple Resonator|
|Polivoks VCF²||Loft 450 Delay Line/Flanger|
|5U E580 sampling mini-delay||Milton Sequencer|
|Ian Fritz 'threeler' 3rd order VCF²||Moog modules Photos Updated|
|DJB-020 tap tempo LFO¹||Moog Sonic Six synthesizer|
|Synthesizer XY laser²||Oberheim SEM New|
|Buchla pulser-crossfader-timbre generator²||PAiA 2720 Synthesizer|
|5U E340 cloud generator²||Papareil Labs Quantix-8²|
|5U E350 morphing terrarium²||Roland System 100 - 140 module|
|Magic Smoke TH-301 VC-LFO²||SCI Model 700 Programmer|
|Bridechamber wogglebug²||SCI Model 800 Sequencers|
|LCD oscilloscope module²||WASP synthesizer New|
|YUSynth Dotcom Mini-Moog VCF New|
|Modular Synthesizer Information|
|Module listing by cabinet||Related Musical Projects|
|Custom modules design files and photos¹||Circle machine sequencer¹|
|Purchased modules and modifications²||MIDI 88 note keyboard²|
|Dotcom modules||MIDI bass pedals¹|
|Main cabinets & power distribution¹||MIDI processor¹|
|Side cabinets & power distribution¹||SpeakJet speech synthesizer²|
|Modular synth tips||Organs and more|
|Parts and DIY information||Hammond B-3 and Leslie 142|
|Making PCB brackets||Hammond M-3 tonewheel generator Photos|
|440 Hz sine wave reference oscillator¹ Part for sale||Hammond vibrato scanner module²|
|Power supply sequencing¹||Hammond zinc whiskers Photos|
|PT2395 delay module²||Organs, keyboards and amplifiers|
|Photos, Videos, and Sound Samples||Electronics Projects and Repairs|
|Photo album||Electronic project information|
|Video and Sound samples||Electronic repairs and tips information|
|Hammond M-3 tonewheel generator||Fender Tremolux Restoration|
|Hammond zinc whiskers||Sony TA-E88 Restoration|
My modular synthesizer now consists of 120 modules including Analog Metropolis, Barton Musical Circuits, Blacet, Bridechamber, Catgirl Synth, Encore, Roman Fillipov, Flight Of Harmony, Ian Fritz, Jürgen Haible, Rob Hordijk, Larry Hendry, Magic Smoke Electronics, Moon Modular, MOTM, Natural Rhythm Music, Neil Johnson, Oakley Sound Systems, Synthcube, Synthesizers.com, Synthmodules.com, YUSynth, and about two dozen of my own designs.
|Design files and photos for my custom modules¹||Design|
|Information, mods, and photos for purchased modules²||Design|
|Parts and construction information||Reference|
|MP3 samples of some of my favorite patches||Sounds|
Here is a painting of my modular synthesizer that my son had made for me.
Modular CV Keyboard
I rebuilt an ARP-3604 keyboard with a wood cabinet and updated electronics.
Modular Cabinets and Power Distribution
I built a 19" rack cabinet (30 modules and 2U standard rack) and a four stack of wood cabinet (96U). I later replaced the 19" rack cabinet with a four stack wood side cabinet (36U+10MU).
|Info & photos of my initial 19 inch rack cabinet¹||Reference|
|Info & photos for my power-on delay¹||Design|
|Info & photos for my rear AC mains module¹||Design|
I designed the ComputerVoltageSource module
using an AtomPro28. Features include:
8 analog inputs (0 to 10 volt with 0 to -5 volt offset at 10 bit resolution)
8 analog outputs (0 to 10 volt at 12 bit resolution)
3 digital inputs
MIDI in / out
I2C expansion (for additional inputs and outputs)
2x16 LCD display.
|Info and photos for the ComputerVoltageSource display¹||Design|
|Information and photos for a four channel version¹||Design|
|Information and photos for a dedicated ribbon controller¹||
|Arduino-based ComputerVoltageSource¹ New||
Synth Display Modules
I built an external display using a 2x20 LCD module with MIDI or serial input and three display modes.
I built two dedicated displays for my programmable PSIM (2x8 LCD) and ComputerVoltageSource (2x16 LCD) modules.
|Info and photos for the ComputerVoltageSource display¹||Reference|
MIDI Bass Pedals
I built a set of MIDI bass pedals using Hammond
organ pedals and an AtomPro24 controller. Features
Normal, Mono, and 'Sticky" modes (sticky=note held until next note played)
Normal, One-Shot, and 'Sticky" arpeggiator modes
5 built-in arpeggiator sequences and a user-recordable 100 note sequence
Normal, -1 and +1 octave select
MIDI in merge
Internal or MIDI clock
External LCD note display
88 Key MIDI Keyboard
I built an 88 key MIDI keyboard from a salvaged Kurzweil Ensemble Grand Mark III digital piano. I used the original keyboard controller and built a custom wood cabinet.
I built a MIDI processor which is self-powered and provides multiple transformations.
Specific continuous controller transforms
A440 Reference Oscillator
I designed a 440 Hz sine wave reference oscillator using only two 8 pin DIP components.
Hammond Vibrato Scanner Module
I built an external electro-mechanical vibrato and chorus using a Hammond Organ scanner and delay line. A small DC motor and speed controller varies the vibrato frequency.
I built the AVR Synth PCB to have a small format synthesizer but never completed this project.
Synth Controlled Laser Light Module
My first laser was a modified Ramsey Electronics laser light (LLS1) with CV control of the motor speed. I built an AVR plug-in that replaces the 555 timers to interface to my synth 5 volt CV levels. Later I built a full X-Y laser for synthesizer CV control.
PAiA Fatman Mods
My son has a PAiA Fatman and we enhanced it with a number of modifications. Some of the modifications were from various sites on the internet and some I designed. I consolidated all the modifications into a single document. Modifications include hard sync, lower frequency range, separate VCO attenuators, sub-octave generators and attenuators, ring modulator and attenuator, LFO filter modulator, and separate VCO tuner output.
Organs, Keyboards, and Amplifiers
I have information and photos of my various keyboards, amplifiers, Hammond organs, and Leslie speakers.
|Keyboard and organ studio layout||Reference|
Electronic Projects and Restorations
This is my non-synthesizer electronic projects page. I have information and photos of two 70's stereos, projects such as an FM transmitter and scrolling display, and various repair and restoration information for amplifiers, speakers, and turntables.
|Info and photos for my electronic restorations and repairs||Reference|