CMOS Circuits 01 - Patchable CMOS DIY Synth

Leigh Kemp

"A Selection of sounds from my DIY Patchable CMOS Synth."

Note: "it's a one off I made using circuits found on the Electro Music Forum's DIY Section.'

Serge - Ian Fritz 'Chaos Theory' & 'Timbre Tantrum' Panels

Published on Jun 22, 2016 isvisible / isinvisible

"Still exploring and finding out how to use my Ian Fritz panels.
Loads of fun. Especially with the Bugbrand DRM1+X drum synth.

All sounds (apart from the Drums, which are heard on their own at the beginning) created by the Serge panels. With just some delay and reverb added to a couple of the voices.

None Serge modules used:
Mutable Instruments - Grids
Iron Ether - Pithoprakta
Doepfer - A-160-5 Ratchet Control
Electro Music - Klee
Modcan - Dual Delay
Intellijel - Springray"

Klimchak @ Electro Music Festival 2009 pt 1

YouTube via rustyanalog

Klimchak @ Electro Music Festival 2009 pt 2


http://www.myspace.com/klimchak

modularland at Electro Music 2009

"Aleatoric music on the Modcan A modular analog synthesizer by Steve Lerner"

"The electro-music(TM) festival is the world's premiere event for experimental electronic music. This three day conference/music festival will be held at the Star Lake Camp in Bloomingdale, New Jersey, October 29 - 31, 2009. The program will include three full days of concerts, seminars, demonstrations, and jam sessions. Now in it's fifth year, we expect this to be the biggest and best electro-music event ever!"

via Steve Lerner

Electro Music Klee - ssm2040 filter - Oakley V4 VCO - XR2206

YouTube via synthdood

Klee Third Run Poll

You can find the poll via Scott Stites on electro-music.com.

"We're trying to figure out of a third run is feasible.

Poll question says it all. If you missed out on the third run, or just would like to buy more and support your local forum, mark yes."

Flizbee - Roland SH-1, MC-202, TR-707, Space Echo

YouTube via synthdood
"Roland SH-1, MC-202, TR-707, Space Echo RE-201, MSQ-100, Alesis MMT-8, Prophet 600, JH Solina tripple chorus, JH Krautrock Phaser, Electro-Music Klee sequencer, DIY modular synth."

Klee 2 Sequencer

flickr set by fonik2000

modular synthesizer cabinet no.1

flickr by mirzaa full size
(click through for mouse-overs for each module)

From left to right:
CGS Utility LFO
Klee Sequencer
Thomas Henry XR-VCO
Thomas Henry VCO-1
YuSynth Minimoog VCF Clone
Fonitronik KORG PS-3100 Resonators
YuSynth S&H & Noise
Thomas Henry VCA-1


"Finally finished, missing double envelope generator module. PCB in arrival."
Almost looks like an ARP 2500 plus Buchla 250e Arbitrary Function Generator.

The Appendage - Softpot Ribbon Controller

Read and see more via Scott Stites on this electro-music.com thread. The following are excerpts only.

"This is the core of the Appendage - it takes a pressure event and translates it into three unique control voltages (continuous, intial value and differential) and produces the timing signal for gate and trigger. Everything past that is downhill. These signals can be manipulated to do an astounding number of things, simultaneously.

The way I see it, if you want a standard ribbon controller, go buy the Doepfer. From the videos I've seen, it's pretty cool. The Appendage, however, is going to be a different beast. I envision it as a cross between a ribbon controller and a Buchlian gestural controller.

Position, relative position, rate of movement, direction of movement (split even into different directions) will be able to control any parameter your synthesizer has, simultaneously. Mixing these control voltages is fascinating. For example, the amount of control mixing differential with initial provides is surprising. Mixing slide with initial creates a sort of hyper-range. Slide with slide bends the curve radically. I've even discovered a neat trill function (quite by accident)."

"Here's an idea for an Appendage controlled touch sequencer, which would be sort of like the Serge touch sequencer, but rather different as well.

First of all, it's based on an 8X2/16X1 sequencer I worked on shortly before I diverted into the Klee. You could use it as such. The addition of the Appendage would take it to another level.

Using window comparators, the Softpot is divided into eight touch zones, separated by "guard bands". Touching within each touch zone will activate the sequencer step so that either one or both of the pots would produce control voltages. Touching in the "dead zone" between the "touch zones" would not trigger the sequencer step. This ensures that you can accurately trigger whichever step you want to. Wiggling the finger on the touch zones will (if you want) wiggle the voltage for vibrato or filter or whatever. This would be somewhat like the Serge, which has dedicated plates for each stage.

The difference is you would have continuous slide for each "note" or "stage"; the "dead zones" would not be "dead" for slides - only for triggering the initial stage. That means you could do much more than wiggle your finger on a certain stage. You could hit stage 3, for example, and slide it up beyond the range of hearing if you cared to. Or down. Hitting the next stage would start the voltage at that stage's voltage and you could do the same. Obviously the more left you go, the less you can drop the voltage, and the more right you go, the less you can slide up."

Again, be sure to check out the full thread on electro-music.com if this interests you. The above is only an excerpt.

The Amazing Klee Sequencer 1

YouTube via sduck409
"Here's a short demonstration of some of the features of this new sequencer. I'm controlling 3 voices with it - all MOTM 300 vco's through various filters and vcas. All in real time with no input from other sources. The sound quality's not the greatest - just using the camera mike - I had the monitors up pretty loud but the sequencer was closer so there's still sound from the switches. You can find out more about this sequencer at electro-music.com - go to the forums, and look for the klee section in the diy area."

kleeseqfrontA

flickr by sduck409

full size

"This is my Klee sequencer, designed by Scott Stites. I built it during May-August 2008, from a pcb/parts kit obtained from electro-music.com."

klee 404

YouTube via D22D21. via Scott, via this electro-music.com thread.
"Beginning of the system. This one is Scott Stites E-M Klee sequencer and Thomas Henry XR VCO trough Yusynth Minimoog VCF clone. It all ends in TH VCA-1. Fun!"

klee sequencer

flickr by janvanvolt

click here for the full set.

klee

flickr by mirzaa

full size

Stuff for Sale

see the flickr set here

"a) 2x8 / 1 x 16 sequencer with 3,5mm plugs. Originally auctioned from vemia as non-working, i fixed the power supply and the other issues.
since i got a klee, a 960, a 119 and a mobius, this has become obsolete. asking 300 EUR (price negotiable)

b) Peter Forrest's A-Z of Analogue Synthesizers. Both Books (A-M) and
(N-Z) from the limited edition. (#1 -- 1891/6000 and #2 -- 1065/6000)
asking 60 EUR per book (or 100 you take both).

c) Sharp MD-R2 (MD recorder) with about 30 medias. best offer price.
d) Moog Modular power supply (vintage) best offer price, please more than 20 EUR.
Items are located in germany."

via JanVanVolt.

NOTE to others: I put posts up for the shots and info, not because they are for sale, so if you want me to post something, send me good shots like this.

klee-firstImpression2

klee-firstImpression2 from loopcycle on Vimeo.
"The CV output A is feeding the pitch of oscillator A. The CV output B is feeding the pitch of oscillator B. Gate busses 1, 2, 3 are triggering three envelopes, which are opening two filters and one VCA. The Klee is running in 16x1 mode."

klee-firstImpression

klee-firstImpression from loopcycle on Vimeo.
"The CV output A is feeding the pitch of oscillator A.
The CV output B is feeding the pitch of oscillator B.
Gate busses 1, 2, 3 are triggering three envelopes, which are opening two filters and one VCA.
The Klee is running in 16x1 mode.
You can see the lights chase each other from stage 1 (upper left) to stage 16 (lower left)."

Klee Sequencer Circuit Theory of Operation

via Scott Stites on this electro-music.com thread.

"I thought it might be a good thing to begin compiling a circuit theory of operation here. When its complete, I'll compile it into a PDF. In the meantime, if you plan to read and study this, have a copy of your schematic handy. I'll start off with the Clock and Load functions, with Load being the first function described.
=============================

Load Function

U5, CD4013, performs the load function by controlling whether the shift register ICs are in the parallel or serial mode. For 99.99% of the time, the shift registers are in the serial mode.

..." See the thread for more.

Klee Jamming

YouTube via synthdood.
"This is a test of the Electro-Music Klee sequencer. What you hear are three Thomas Henry XR2206 VCO's one CEM3320 filter, two MOTM EG's, one Thomas Henry VCA, a Thomas Henry UD1 drum voice, and a Ken Stone Cynare(which you can barely hear)"