My designs are indicated with a superscript¹
Modifications of existing designs are indicated with a superscript²
|Ian Fritz DoubleDeka VCO² New||CVS eight channel module¹|
|5U E950 Circuit Bent VCO New||CVS 2x16 LCD display¹|
|CGS-35 Steiner VCF² New||CVS four channel module (PSIM software compatible)¹|
|Moon Modular M569 companion||CVS Kurzweil ribbon controller¹|
|Thomas Henry mega percussive synthesizer||Synthmodules.com PSIM and SpeakJet²|
|5U E560 deflector shield||CVS and PSIM I/O expansion module¹|
|Barton dual quantizer²||CVS and PSIM Programs¹|
|OMS-820 lag companion||Arduino-based ComputerVoltageSource¹|
|5U Buchla 266 source of uncertainty²||Synthesizer Restoration and Builds|
|Flight Of Harmony plague bearer||Aries modules|
|Polivoks VCF²||Buchla modules Updated|
|5U E580 sampling mini-delay||Fonitronik mh21 Triple Resonator New|
|Ian Fritz 'threeler' 3rd order VCF²||Loft 450 Delay Line/Flanger|
|DJB-020 tap tempo LFO¹||Milton Sequencer|
|Synthesizer XY laser²||Moog modules Photos Updated|
|Buchla pulser-crossfader-timbre generator²||Moog Sonic Six synthesizer|
|5U E340 cloud generator²||PAiA 2720 Synthesizer|
|5U E350 morphing terrarium²||Papareil Labs Quantix-8²|
|Magic Smoke TH-301 VC-LFO²||Roland System 100 - 140 module|
|Bridechamber wogglebug²||SCI Model 700 Programmer|
|LCD oscilloscope module²||SCI Model 800 Sequencers|
|Jürgen Haible polymoog® resonator²|
|Jürgen Haible living VCO²||Related Musical Projects|
|Circle machine sequencer¹|
|Modular Synthesizer Information||MIDI 88 note keyboard²|
|Module listing by cabinet||MIDI bass pedals¹|
|Custom modules design files and photos¹||MIDI processor¹|
|Purchased modules and modifications²||SpeakJet speech synthesizer²|
|Dotcom modules||Yamaha Tenori-On|
|Main cabinets & power distribution¹|
|Side cabinets & power distribution¹||Organs and more|
|Hammond B-3 and Leslie 142|
|Reference Information||Hammond M-3 tonewheel generator Photos|
|Modular synth tips||Hammond vibrato scanner module²|
|Parts and DIY information||Hammond zinc whiskers Photos|
|Making PCB brackets||Organs, keyboards and amplifiers|
|440 Hz sine wave reference oscillator¹ Part for sale|
|Power supply sequencing¹||Electronics Projects and Repairs|
|PT2395 delay module²||Electronic project information|
|Electronic repairs and tips information|
|Photos, Videos, and Sound Samples||Fender Tremolux Restoration|
|Photo album||Sony TA-E88 Restoration|
|Video and Sound samples|
|Hammond M-3 tonewheel generator|
|Hammond zinc whiskers|
My modular synthesizer now consists of 115 modules including Analog Metropolis, Blacet, Bridechamber, Catgirl Synth, Encore, Roman Fillipov, Flight Of Harmony, Ian Fritz, Jürgen Haible, Larry Hendry, Magic Smoke Electronics, Moon Modular, MOTM, Natural Rhythm Music, Neil Johnson, Oakley Sound Systems, Synthcube, Synthesizers.com, Synthmodules.com, 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|
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|