Fonitronik 4U ADC Sequencer (Proof of Life)

Published on Aug 18, 2016 fonitronik

"This is just a short proof of life of my 4U ADC Pattern Sequencer in Serge format. It runs in it's basic mode.
1st step is set to always ON, whereas steps 2-7 are controlled by the ADC. The ADC gets a voltage from the DUSG (LFO) and converts it to an 8-bit word that corresponds with the 8 steps (=pattern). The ADCs 8-bit pattern is loaded by a latch (triggered by a division of the clock signal).

The sequencer is controlling a Thomas Henry VCO 555 (CV) and a LPG 292C (trigger), whereas the DUSG (LFO) is changing the PW of the clock as well.

BTW the clock is PWM'd, and the trigger output of the sequencer follows the clock signals pulse width, this the changes in the LPGs opening times ;P"

Eurorack modular synthesizer system (AS, Doepfer, Fonitronik, Tiptop, Acidlab)

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via this auction

"For auction a whole eurorack modular system composed of the following modules and parts:

Analogue Solutions VCO-SUB (discontinued version)

Fonitronik Thomas Henry's 555-VCO (professional built rare vco)

Doepfer A-156 Dual Quantizer

Tiptop Audio TOMS909

Tiptop Audio BD909

Analogue Systems RS-440 BBD Analogue Delay

Doepfer A-199 Spring Reverb with Accutronics & Belton stpring tank

Doepfer A-149-1 Quant./Stored Random Voltages

Doepfer A-149-2 Digital Random Voltages

Doepfer A-145 Standard LFO

Doepfer A-142-4 Quad Decay

Acidlab - Autobot aka NU70307

Doepfer Eurorack powered case LC9 (220 volts main voltage)"

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fonitronik-DIY Triple Vactrol Resonators (PS3100 core)

Published on Feb 25, 2016 fonitronik

"Here i am sending the POLYSIX i recently restored right through the Resonators. The resonators module consists of three vactrol based VC bandpass filters and a resettable triangle LFO. The filters core is taken from the PS3100.
The module will soon be available as Eurorack DIY project fom https://www.thonk.co.uk/"

Serge03

Published on Feb 1, 2016 fonitronik

"Now that my XL Boat is completely filled with the essential selection of SERGE/R*S 4x4 Modules, i thought it would be a good idea to show off with some patches. Today we have some rhythmic stuff."

Rare Fonitronik Analog EFM 1900 and 3500 Modular Synthesizer Modules, Kits, and Parts

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via this auction

"Manufacturers of similar modern modular synthesizers include Buchla Electronic Musical Instruments, Doepfer Musikelektronik, Macbeth, Moog Music, Synthesis Technology, PAiA Electronics, Pittsburgh Modular, Analogue Systems, and Synton.

This lot of complete modules and parts are from the EFM series 1900 and 3500 series synthesizers from Tom Gambles Electronics For Music. Nearly everything you need to build a beastly analog modular synthesizer!

Full lot contains the following:

Complete Modules
4 x 3541 VCO
1 x 5x3 multiplier
1 x DEG2A dual ADSR
1 x RX-CV Midi to CV gate
1 x EGLFO1A ADSR/LFO
1 x VCO4E Moog Rogue
1 x VCA5B hybrid VCA/mixer
1 x VCF1E Oberheim 2pole HP/BP/LP filter
1 x PSU 12V power supply

PCB’s only
2 x 3506 – LAG slide/glide/pitch bend
1 x 3541 - VCO
3 x 3508 – ADSR
2 x 1605 – VCF6C EMS diode ladder
1 x 4303 – LFO5A vc lfo/s&h/noise
1 x 1003 – RMP1B ring mod/lfo/preamp

Components
5 x PT146 precision resistors
50 x MF1/4DL3303F Metal Film Resistors - Through Hole 330K
4 x 064W503 Trimmer Resistors - Through Hole 50K 10% 3/8"MULTITURN
100 x 1N4148 Diodes - General Purpose, Power, Switching 100V Io/200mA BULK
25 x CHB471k1H821 ceramic capacitors
25 x C1C101J1H551 ceramic capacitors
100 x 3319P-2-503 Trimmer Resistors - Through Hole 9MM RND 50KOHMS 25% 0.2WATTS

Integrated Circuits
20 x NJM072BD Operational Amplifiers - Op Amps Dual
16 x NJM13600D Transconductance Amplifiers Dual
10 x CD4001UBE Logic Gates CMOS Quad 2-In
5 x NTE912
10 x NJU4066BD Analog Switch ICs CMOS Quad
20 x LM393N Analog Comparators 2-36V Dual
3 x NE555N Timers
90 x 8 IC socket
30 x 14 IC socket
25 x 16 IC socket

As well as miscellaneous LEDs, ~100 knobs, ~40 Al faceplates, resistors, capacitors, diodes, and trim potentiometers.

Sound Samples
bntic.mp3
PS3100_02_15V.mp3
modular6_07.mp3
SL01.mp3

The Plan....The whole point was to design a series of small boards that could be used as building blocks as well as individual modules. They can be mounted on a panel or put on a motherboard and used a single board modular. Most of the boards are designed with the i/o connectors all on one side of the board. Using 90 degree headers they can even be mounted vertically.

More information about the modules, diagrams, and mods can be found here"

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Thomas Henry VCF/VCA (21st century synthesizer)

Published on Oct 21, 2015 fonitronik

"Short rough and uncut Demo:
Prototype for a DIY Eurorack module for Thomas Henry's VCA-VCF from hos book 'A Synthesizer For The 21st Century'"

Serge01 - Fonitronik's Serge Eurorack

Published on Sep 21, 2015 fonitronik

"The very first patches with my growing Serge/Random*Source Modular, mostly built from prototypes. By now comprised by the Thomas Henry/Random*Source 555VCO (tracking 10 octaves), a Serge/Random*Source DUSG, and a Random*Source DONK (i use only the LPGs for this patch)."

PS3100 Resonator

Published on Feb 17, 2015 ken mosley

"Built on Fonitronik's PCB with a Manhattan Analog panel. Three BPF resonators using vactrols. Independent outputs available for each resonators as well as a mixed output. The LFO can be inverted on a channel to create swirling stereo effects."

Modular Wild Presents Fonitronik MH31 VC Modulator-Processing Drums and Vocals

Published on Jul 13, 2015 Modular Wild

"A short demonstration of using the Fonitronik MH31 to process drums for a pseudo ring mod sound. there is also a demo of creating a "Dalek" style voice by processing vocals. Sound and Video by Raul Pena."

All parts:

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Modular Wild Presents Fonitronik MH31 VC Modulator- Audio Rate Waveforms

Published on Jul 7, 2015 Modular Wild

"A short demonstration of the Fonitronik MH31 VC Modulator. A different take on a Ring Modulator. Demonstration consists of Oscilloscope views of ordinal waveforms and processed signal. Sound and Video by Raul Pena."

All parts:

Modular Wild presents Fonitronik MH11 ADC Pattern Sequencer-Audio Processing and Bitcrushing

Published on Jun 29, 2015 Modular Wild

"A continued exploration of the Fonitronik MH11 ADC Pattern sequencer. This time our demonstration focuses on how to process audio with the MH11. Sound and Video by Raul Pena"

All parts:

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Modular Wild presents Fonitronik MH11 ADC Pattern Sequencer-Clock and pulse width

Published on Jun 22, 2015 Modular Wild

"A continued exploration of the Fonitronik MH11 ADC Pattern sequencer. This time our demonstration focuses on the how the clock signal can impact the dynamics of your sequences.. Sound and Video by Raul Pena"

All parts:

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Modular Wild presents Profile-Fonitronik MH31 VC Modulator

Published on Jun 1, 2015 Modular Wild

"A short overview of the features of the Fonitronik MH31 VC Modulator. Audio Demonstrations coming soon. Sound and Video by Raul Pena"

Modular Wild presents Fonitronik MH11 ADC Pattern Sequencer-ADC Patterns and PCV

Published on May 26, 2015 Modular Wild

"A continued exploration of the Fonitronik MH11 ADC Pattern sequencer. This time our demonstration focuses on the ADC patterns which may be varied via a CV signal. Sound and Video by Raul Pena"

All parts:

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Modular Wild presents Fonitronik MH11 ADC Pattern Sequencer-Basic Sequencing

Published on May 18, 2015 Modular Wild

"A short demonstration of some of the basic sequencing features of the Fonitronik MH11 ADC Pattern Sequencer. Sound and Video by Raul Pena."

All parts:

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Modular Wild presents Profile-Fonitronik MH11 ADC Pattern Sequencer

Published on May 12, 2015 Modular Wild

"A short overview of the basic features of the Fonitronik MH11 ADC Pattern sequencer. Video Demonstrations will follow. Sound and Video by Raul Pena."

FM Mayhem

Published on May 9, 2015 fonitronik

"Thomas Henry VCO555 FMing thomas Henry's X-4046 VCO, CMOS LFO and ADSR modulating X-4046 and the fonitronik ADC sequencers (the latter are available from analogue haven and schneidersladen)."

PS3100 triple vactrol resonator for Eurorack DIY

Published on Mar 17, 2015 fonitronik

"A short demo of the PS3100 resonators for Eurorack. The module features three vactrol based voltage controlled bandpass filters with fixed Q, as known from the PS3100. It provides a common input and output for all three channels, as well as single in- and outputs. The on-board wide range triangle LFO is resettable (sync) and is normalled to the CV inputs of the 3 BPFs. The LFOs signal can be inverted for the 3rd channel."

fonitronik PS3100 Resonators

Published on Mar 15, 2015 fonitronik

"uncut raw snippets of the eurorack PS3100 resonators module. these vids will be deleted as soon as i cut a demo from them."

Thomas Henry/Fonik X-4046 VCOs

via this auction

"For sale some Thomas Henry/Fonik X-4046 VCOs for Eurorack forma modular synth. I was asked to build several of these for a client who was unable to pay on project completion. For this reason it is being sold as new. These were racked only for testing and calibration, burned in and now ready to go. Really amazing sync and FM sounds, variable ramp output, tons of character all while tracking ~7 octaves.

Waveform outs: Pulse (PW w/sync), skew (variable saw), saw, sine and triangle
Sync input with attenuator
1/v/Oct response
FM (Linear and Exponential) w/attenuators. (AC/DC coupling for Exp input is available in the rear via a simple shunt.
Coarse and fine tune
PWM is voltage controllable with attenuator

Some specifics about this build and why this module is rather expensive.
• NXP 4046 chips
• Conductive plastic pots (increased rotational life)
• Alcoknob heavy phenolic knobs (plastic still on spun aluminum inlays. That's the little dimple you see on the pic)
• Dustcaps on all pots
• Screened cable on the outputs
• Upgraded capacitors
• Upgraded op-amp in CV section (LT1013)
• Countersunk panel screws
• Heat shrink on solder lug connections
• Shrouded polarized headers"

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