Blue Lantern Lunar Modulation Lab VCO/LFO || Demo, Manual, & Patch Tips

video upload by Robots Are Red

"In this video we dissect the mega powerful Lunar Modulation Lab VCO/LFO by Blue Lantern Modules. This is an 18hp triangle core VCO/LFO based on Buchla and Bergfotron designs, and is stable up to 10 octaves w/ 1V/Oct! The module has 11 different waveform outputs with adjustment switches that brings this module to 17 different waveform options, and that is before you start mixing them together!
We walk through all the outputs and inputs of the module along with some patch tips including self patching."

Bergfotron Synthesizer

via Bergfotron Synthesizer on Facebook

Buchla Inspired Electronic Music Box DIY-pages

Full details at SEKU

Snip for the archives:
"Electronic Music Box (or just EMB) is my Buchla-inspired performance synthesizer. This project started when I wanted to give a new life to my old trusted Oakley VCO's. They are a kind of MOOGish design so here MOOG shakes hand with Buchla. Here below is a diagram of EMB's sound-generation arrangement. VCO1's triangle output is routed to Ian Fritz's Double Pulse Generator (DPG). DPG gives the usual PW and PWM but also Pulse Timbre and Pulse Timbre Modulation. VCO1 triangle and square outputs are routed to Bergfotron's Complex VCO Waveshaper that creates SIN, TRI, 2F SAW, EVEN and SPIKE waveforms. Oakley VCO's sine-output was not so perfect (these are older versions). It was more like filtered triangle-wave. Complex VCO Waveshaper gives a perfect sine-wave. Electric Druid's Noise Source generates white and pink noise. Noise outputs are also on frontpanel jacks so it is possible to modulate something with noise..."

DIY Electronic Music Box Inspired by Buchla's Music Easel

via /Manu: "Sigma-blog document's the development of my Electronic Music Box DIY performance synthesizer inspired by Buchla’s Music Easel. Everything is going to be under a 6U rack format engine bonnet. The density of controls is something between Doepfer and MOTM. Color-coding is little from Buchla (blue and red) and I am using nice NKK-switches and Alpha-sliders with LED’s inside (take a look at Henrik Nydells Modulator).

The heart’s of this design are my two Oakley VCO’s that I am going to take apart and give a new life as complex VCO’s. Jörgen Bergfors has designed a beautiful Complex VCO here. The core of my Complex VCO is Oakley VCO. Waveshaping is by Bergfors and Ian Fritz. Two waveshapes can be selected by voltage and mixed to MIX-OUT. The second VCO is simpler with just basic waveforms and Buchla’s timbre generator from Music Easel. Timbre can be modulated by voltage.

8-step VCP sequencer is from Fonitronik. It is an interesting design where you can select Gray code patterns (256 patterns) with voltage.There are three options for every step; normal 8-step sequence, skipped, ADC-controlled gray code. I am going to integrate Electric Druids TAP-tempo clock to this sequencer so that you can choose the tempos on fly.

There are two LFO’s that use the same PIC-chip as in the sequencers TAP-tempo clock. This is a very versatile digital LFO-chip with TAP-tempo/external clock, six waveforms, wave distort and tempo multiplier. More information is here.

To save time I decided to order Doepfer-modules that I am going to adapt in my own design. A-149-1 and A-149-2 generate random quantized and stored voltages as in Buchla’s Source of Uncertainty. Two A-101-2 LPG’s as Buchla’s Low Pass Gates. A-134 PAN can do voltage controlled panning or two signal morphing."

Bergfotron @ EMS

flickr By zthee
(click for more)

BERGFOTRON AMORE - Analog Modules Of Reusable Engineering

The AMORE is a DIY modular standard by BERGFOTRON

" The AMORE standard consists mainly of two parts: The physical dimensions of the board and the connector with its electrical specifications. The standard does not define any front panel. You can make the AMORE based modules compatible with the earlier Bergfotron modules or with most of the commercial modular synths by mating the board to a front panel that corresponds to the standards of your chosen synth manufacturer."

"AMORE boards are gangable for building a polyphonic synth."

Top: "AMORE Starter Kit with the Minikorg VCF board in operation."
Bottom: "This is how an AMORE board looks"

Full details on the BERGFOTRON website.

BERGFOTRON has been around for a while. See the label below for previous posts featuring what people have done with their designs.

Sebastián Cordovés' DIY Modular

via Sebastián Cordovés on Facebook

"Modulos: 1 x MIDIbox CV - 3 x Yusynth VCO - 1 x Papareil Synth Labs Quantix-8 - 1 x Yusynth Mixer - 4 x Yusynth ADSR - 3 x Yusynth VCA - 1 x Yusynth Minimoog VCF - 1 x Yusynth Synthacon VCF - 1 x Yusynth VCS3 VCF - 1 x Jugen Haible WASP VCF - 1 x Yusynth LFO - 1 x Yusynth Dual Slew - 1 x Sebo Buffered Multiple - 1 x Yusynth Noise & Sample&Hold - 1 x Yusynth Sawanimator - 1 x Dual Ringmodulator - 1 x Yusynth Wavefolder - 1 x Bergfotron VC Phaser - 1 x Scott Bernardi VC Delay"

DIY Modular by Sebo

via this electro-music.com thread
(see the thread for more)
1 x MIDIbox CV
3 x Yusynth VCO
1 x Quantix-8
3 x Yusynth ADSR (plus one more not installed in the cabinet yet)
1 x Yusynth Minimoog VCF
2 x Yusynth VCA (plus two more not installed in the cabinet yet)
1 x Yusynth LFO
1 x Bergfotron PSU (Formant Synth Based)
1 x 5V PSU (For the MIDIbox CV Core)

Voltage controlled delay (AMORE)

Note this one is not new. I found it on this electro-music.com thread which states it's about half a year old. Normally I wouldn't call this out, but it is NAMM season and I know people are looking through them NAMM goggles... Remember, old can be new here. You can find more info on Bergfotron.

"Delay isn't one of the ”classic” modular synth modules. Maybe this is because analog delay chips became available when the synth industry had moved on to non-modular and polyphonic synths.
This module is based on the MN3207 BBD chip or it's modern equivalent, the BL3207. The latter is still produced and can be had for a very modest sum of money (you can buy it here). This is a 1024 stage chip and the board should also work with the 2040 stage BL3208, if you want a longer delay. The board also uses the companion clock chip MN3102/BL3102.
The delay time is voltage controlled, by using the VCO part from a standard 4046 PLL chip. An exponental converter controls the frequency of the PLL VCO. The delay circuit and anti-aliasing filters is based on the MN3207 application circuit from the datasheet. I increased the cutoff of the anti-aliasing filter by dividing all capacitor values with 1.5. Note that the BBD chip runs on +10 V single supply, which is the maximum supply voltage. So for this module, the +10 volt pin on the AMORE connector is used and therefore you need the 10 volt supply that is specified in the standard, in addition to +15 and -15 volts.
The board also contains a 3080-based VCA, which is used to give voltage control over the delay feedback. There is a high pass filter that rolls off the bass in the feedback loop. Otherwise the self-oscillation will occur at a very low frequency (1/delay time), which isn't very musical. If you don't want this bass roll-off, you can substiture the 15 nF capacitor with a 1 µF one.
The feedback loop has external connections so you could patch in other modules in the feedback loop if you want. Note that there is a jumper on the board for completing an internal feedback path (below/to the left of the 4046). This jumper must be removed if you want to use an external feedback path. The jumper can also be removed for troubleshooting. The CA3080 OTA can be difficult to find nowadays but you can get it from Banzai Effects, where you can get the BBD chips too."

bergfotron minimoog vca project(s)

via numbertalk on this electro-music.com thread.

"I would like to build a Minimoog VCA clone. I would like to base this off of adaption(s) designed by Bergfotron. There are 2 of his schematics I'm looking at and would like to incorporate features of one into the other but have a few questions, if anyone could help (and can manage to read through these questions Smile).

For the questions below, schem 1 refers to link - this is the one I would like to mainly base my module on.

And schem 2 refers to link - this is one I would like to use a few of the extra features from."

More info and questions at the thread.

BERGFOTRON AMORE

"Analog Modules Of Reusable Engineering (AMORE)
I have realized that some of my earlier modules (the Complex VCO comes to mind) have been too complicated for most hobbyists. And even for myself, these multi-board modules are difficult to maintain and troubleshoot. They are also somewhat failure-prone, as internal wiring cables can break at their solder joints. These are just a few reasons why I have come up with a brand new concept for building synth circuits. I call my new concept Analog Modules Of Reusable Engineering (AMORE). Further advantages of the system:" link

Bergfotron Complex VCO

"The front panel is divided in three parts: To the left the modulation generator, to the right the main oscillator and in the middle, at the bottom, the modulation routing section."

You can find more info and samples here and more sound clips here.

BERGFOTRON SAS

Click here for more shots of "Analogue synth enthusiasts of Stockholm."

Pictured:
"Hans Åkerman "the human sequencer" plays bass on the Bergfotron, which, as you can see, is starting to outgrow it's old case."

via altemark

Oakley Sound Systems

I've noticed a few Oakley DIY synths lately like The Ocean I just posted on. I thought I'd take a look at the Oakley Sound Systems site again and put up a post. They offer synth repair services, standalone music projects, including the TB3030, and of course the Oakley Modular. Title link takes you there.

The colorful 'Bergfotron' modular synthesizer