Messing with diy modular synth@Befaco Workshop:T 37.Madrid.2014

Published on Jul 21, 2014 David B.

Befaco Modular Workshop London This Saturday & Sunday

Details on MATRIXSYNTH CLASSIFIEDS

Reminder: Befaco Modular Synth DIY Workshop This Saturday and Sunday in London!

This is just a reminder that the Befaco workshop previously posted here (and featured on MATRIXSYNTH CLASSIFIEDS) is happening this weekend at Musichackspace in London.

The event is free for people that want to come and just check things out. This is a great opportunity for those new to DIY.

For those that would like to build a module to take home, contact befacosynth//at//gmail.com.  Prices for the different modules are listed at MATRIXSYNTH CLASSIFIEDS here.

If you'd like to organize a workshop in your city contact Befaco at their address above.

Befaco Modular Synth DIY Workshop Coming to London April 26 & 27 & Other Locations

Note: Auction links are affiliate links for which the site may be compensated.

via MATRIXSYNTH CLASSIFIEDS

"SDIY worshop on London next 26/27 of april at Musichackspace (Also other cities also available check Befaco.org)

No previous knowledge needed

You can build any of the next modules on eurorack format:

BF22 VCF 120
VC ADSR 110
Slope Generator 2 120
Instrument Interface 110
Output module 65
Mixer 50
Crush Delay 110
Hexa VCA 135
Power Bus + Power supply 73
Dual Atenuverter 50
Joysitck controller 100
VC Slew limiter 60

The workshop is included on the price of the kit you want to build. Kits include all the neccesary parts to finish your module

You can come also for free if you dont wnat to build any module and just want to meet some "euro-freaks"(write me first)

Check this video for more info about Befaco and his workshops

For booking please contact befacosynth//at//gmail.com

If you are interested in organize this workshop on your city just led as know and we will try

Asembled modules available on demand"

Befaco Modular Synth Workshop Coming to Berlin

"Befaco is organizing a new edition of the Berliner version of his DIY modular synth workshop.

Date: 16_17th Nov 2013 from 12h.
Duration: 2 Independent days (~8 hours/day)

Max participants: 11
Target of participants: People interested in analog synthesis, modulars, experimentation, DIY, performance, sound.
Language: English / Spanish
Material Costs: NO Fee, just the kits you build. Kit Includes all you need to make the module.
Location: Ø: Cotheniusstrasse 5, D-10407 Berlin
Required skills: No previous experience in electronics, interest and patience.
Required materials: Fine tip soldering iron less than 25w (if possible)

Registration: PIN

Befaco is a Synth DIY/open hardware platform based on Barcelona, focussed on designing modules and organizing modular synth workshops each month in Madrid, Barcelona and Berlin.
Participants can decide between any of the modules that are available.

Modules are in eurorack format and you can choose between Banana or minijack connector

Available modules this time are:

-BF22 Sallen key Filter. MS20 inspired filter with VC resonance.(110e)
-Voltage controlled ADSR. Full V.C. envelope generator with LIN/RC response (100e)
-Joystick controller arcade style X/Y controller with two buttons for trigger.(80e)
-Dual atenuverter. Dual inverter atenuator + DC offset (50e)
-VCA/distortion. Tube based VC amplifier (95e)
-Sample and hold+ Lag processor. (95e)
-Power supply + power bus (75e)
-Crush delay. Full Voltage controlled PT2399 delay with + lofi "crush" mode (95e)
-Output Interface. Banana/minijack to jack converter with volume attenuator and headphone amplifier (55e)

Befaco organize regular workshop also in Barcelona, Madrid and London"

Upcoming Befaco Modular Workshop

via Befaco:
"We are preparing our second edition of the Befaco Modular Workshop at Berlin.  No previous knowledge is needed and we will provide all the parts you need.  The modules are Euro format but you can choose betwen banana conectors and 3,5 jacks.  The next date is next 13/14 of January (with other dates on 23-24/02/13 and 15-16/03/13).  The place will be (as th last time at R-aw (Cotheniusstrasse 5) We have begging this thread also on muffwiggler.com for workshop information. If you are interested in take part, please replay to befacosynth@gmail.com and reserve the modules you will like to build. (The workshop is limited to 14 people).

We are a open source DIY collective so you can also download the schematics eagles etc, from our site befaco.org we have also the same workshop in Madrid and Barcelona (check the dates at befaco.org)

In this second take the modules available are:

Euro style power supply+Power bus. 14 plugs Regulated Power bus plus a prebuild 2A switched supply. (65e)

Envelope generator Based on Buchla 281 but with more outputs and hi velocity mode (95e)

Quad VCA/ Mixer 4 VCAs lin/exp with master out (95e)

Ring Modulator + Atenuverter It includes a Sin. VCO (95e)

Noise gen + Lag processor Shift register noise unit with white,pink, HP,LP, CV granity and random gates. as bonus came with a smal lag procesor (65e)

Tube distorsion + Atenuverter. tuve driven VCA+distorsion and as bonus an atenuverter (95e)

Sample and Hold +Complex Lag procesor (95e)

Mixer. Small four channel mixer with two outputs, master and 180º inverted master for CV and audio mixing.(55e)

Ouput module. Main output "world interface"low cut r, mono to stereo "Y" ,Headphone amplifier, and tree Banan or minijack to 6,5 Jack converters.

We also have some stand alone devices to build :

Mini-sequencer /slicer usb powered step sequencer + audio slicer+ scanning slider VCO (95e)

Quad-t 4 voices touch , trigg,and piezo trigered analog "twin-T" drums) (65e)

Single anthena Theremin (65e)

Cacophonator Battery powered noise unit with 6 square oscillators and power starvation

Have fun!!"

Modular Synth Workshop ://BEFACO.org @ Ø Berlin 21/22th NOVEMBER

Date: 21-22th Nov 2012 from 16h.
Duration: 2 Independent days (~5 hours/day)

Max participants: 11
Target of participants: People interested in analog synthesis, modulars, experimentation, DIY, performance, sound.
Language: English / Spanish
Material Costs: NO Fee, just the kits you build. Kit Includes PCB, all electronic parts, acrylic frontal laser engraved.
Slicer 90€ I Quad-t 65€ I 6D 60€
Location: Ø Studio- Cotheniusstrasse 5, D-10407 Berlin
Required skills: No previous experience in electronics, interest and patience.
Required materials: Fine tip soldering iron less than 25w (if possible)

Registration/+info: pin@r-aw.cc

/////////////////////////////////////////////////
+info: http://r-aw.cc/modular
http://www.befaco.org
/////////////////////////////////////////////////

DIY Analog Synth Workshops
The presentation of the Befaco collective in the Berlin scene and the first modular synth praxis workshop will be next November 21st/22nd.
We will be building some of our standalone devices like:

•Slicer V3: An hybrid between an analog Cv/gate sequencer, a scanning slider VCO and an audio slicer.



Quad-T: A small drum synth based on the famous twin-t oscillator used in a lot of drum machines in the analog golden era.



Cacophonator 6DE
This kit is a Cacophonator II, originally designed by Arthur Harrison, the circuit is based in IC 40106, which has six trigger schmidt that, properly connected, generate 6 square wave oscillators. In the links section you can find technical information from original design.

Four of these oscillators are directly connected to the output, creating a weird sonic hodgepodge. The other two have a different polarization and are LFOs, but they have no sound output. They're there just to bothe the other oscillators. (Yes, to bother them!) !But how? Here's the fun of this circuitr: Power starvation. When the IC has it's power lowered the trigger Schmidt gates from 40106 start behaving funny in a struggle for power. The two extra oscillators do not have audio output, but affect the sound of the other as they also demand a share of the power. The circuit has a high value capacitor, which allows this circuit to be used turned off. With a press of the button that capacitor is charged and will act as power source. As charge on the capacitor falls, Oscillators will slowly die, producing tasty weird sounds.

Audio input is directly connected to Osc 4, where will affect this oscillator and will also be added to the output. This option works great when starvation is high, when plugging a rythmic signal in, you will hear the 6DE generating synchronized noises.

Befaco micro analog percussion set

via Befaco

"We are enormously proud to introduce this micro analog percussion set, bound to be loved by those players who prefer the feel of metal tracks over plastic than the harshness of leather pads. Mongo Santamaría would have saved litres of sweat had he come across this pocket instrument, which can be played simply by tapping your fingers onto the 4 metal networks on the board!

You can build one by attending our March 18th workshop. To sign up, write to befacosynth [at] gmail.com"

Befaco SDIY February Course in Advanced Synthesis

"Befaco SDIY collective based on Barcelona will hold during February a course in advanced sound synthesis, taught by Juan Bermudez Costa.

Bermudez Costa is one of the precursors of DIY sound electronics in Spain, renowned by his articles in “Musica y tecnologia” magazine (now disappeared) and his book “Nueva generacion de instrumentos musicales electronicos” (New generation of electronic musical instruments) published in 1977 and recently reviewed and freely republished trough the Web.(it is in Spanish Download it here)

This workshop will focus on sound synthesis through analogue synths, with special interest in sound physics and its electronic source.

The course will take place 5 pm to 9 pm every Tuesday and Thursday in February (45 taught hours) . All didactic materials, including vintage and contemporary synths for practical purposes, will be provided by the organization.

The collective will also organize other electronic workshops were you can build a modular synth, a Theremin, an electronic drum, and an analog chorus "Elkorus" based on the ARP solina string ensemble. No previous skills needed

Check for dates on Befaco.org

More info and bookings: befacosynth@gmail.com"

Befaco Workshop Pics

Spanish here. Googlish here.

"Do you have a device half-finished, forever doomed to wander the shelves of the storage room of your house? Is it time to buy a kit, and never you dare to set it up? Do you want to modify a Casiotone, a Speak & Spell, a Chinese toy?"

"Workshops Befaco in Hangar - are now open!"

Befaco BF-20 vs Korg MS-20

YouTube Uploaded by jorditalleda on Jun 25, 2011

"Two weeks ago, at our workshop in Barcelona, we started assembling the first units of our latest module: a very faithful replica of the legendary LP/HP filter of the MS 20.

The most demanding part of the design was reproducing the Korg 35, a dedicated IC found at the heart of the original filter. To be able to clone the filter, we first had to clone the IC! It consists of a mini PCB, so small we had to use SMD components for the first time (the people that attended our workshop had a blast! )

The clone of the chip is 100% compatible with the original filter, so it can be used as a part for repairing real MS-20′s!"

Via Befaco:

"Our friend Jordi made a video of these two analog titans challenging each other, face to face… he does get the Befaco modular, although with a very different architecture from the MS-20, to reproduce some of its most characteristic sounds quite faithfully.

Here’s what Jordi told us about the patch:

-BF-20 volume almost at maximum (the horizontal pot’s level line pointing to the right);
-HPF up, LPF down;
-From the Envelope Generator I sent an env. to two attenuators. They then go to the CV control inputs of the LPF and HPF. This way I can simulate the function of the MS-20 that allows you to adjust the amount of ADSR that affects each of the filters;
-I used a separate envelope for the VCA, and gave it more Decay than the filters;
-I used a VCO + sub-oscilator, to get a good squarewave;
-The other VCO went directly to the filter input, summing a sawtooth to the squarewave. This way I can get the two VCO’s to sound a bit detubned, as is often the case with the MS-20. If I use only one VCO, the result isn’t as fat as the MS-20."

And a video from Nov 20, 2010:

BEFACO - Taller de construcción de sintes Modulares.

Uploaded by jorditalleda on Nov 20, 2010

"Puesta en marcha de sintetizadores Modulares Befaco realizados en los talleres organizados por Befaco.
Noviembre 2010.

www.befaco.org."

BEFACO BF-20 KORG MS-20 Filter Clone

"Introducing the BF 20V

Two weeks ago, at our workshop in Barcelona, we started assembling the first units of our latest module: a very faithful replica of the legendary LP/HP filter of the MS 20.

The most demanding part of the design was reproducing the Korg 35, a dedicated IC found at the heart of the original filter. To be able to clone the filter, we first had to clone the IC! It consists of a mini PCB, so small we had to use SMD components for the first time (the people that attended our workshop had a blast! ;-) )

The clone of the chip is 100% compatible with the original filter, so it can be used as a part for repairing real MS-20′s!"

More details and pics at BEFACO

Befaco Modular synth workshops in Barcelona and Madrid

via http://www.befaco.org/

"We are offering modular synth workshops in Barcelona from one year ago. In this workshop we provide all the necessary parts and tools for building your own modular from scratch without previous electronic skills. The modular nature of the machine makes modular the workshop too, so you can choose what modules you like more, and make any one any day. The good news are from this month until July, we will be also giving this workshop in Madrid. The next dates are...

Barcelona: 14/15 May, 11/12 Jun, 2/3 July, 16/17 July, 30/31 July
Madrid: 21/22 May, 4/5 Jun, 25/26 Jun, 9/10 July"

Befaco - Barcellona SDIY Collective

via Diego:

"We are a new Synth Diy collective based on Barcelona. As main activity we are making Modular synth workshops. In this workshop each one builds his own machine. Each month we prepare two workshops one with a new module an other you can choose between any of the previous. The modules we have until now are: VCO,VCF, Envelope generator (based on buchla 281), quad VCA, ring modulator, noise generator and power supply. but the list is in progress."
More details at http://www.befaco.org/




Befaco: "Haz tu propio sinte modular" from Común y Corriente on Vimeo.

"Visita a uno de los talleres de Befaco en Barcelona. Más en befaco.org y comunycorriente.com"

Googlish: "Visit one of the workshops Befaco in Barcelona. More befaco.org and comunycorriente.com"

Update: via diego in the comments:

Modular Synth.mov

YouTube via Befacosynth | December 03, 2010 |

"By Befaco.org Shooted at Hangar Media Lab by Borja Alexandre. 21/11/2010"

Solarizator v3.mov

Befacosynth | December 03, 2010 |

"By Befaco.org Shooted at Hangar Media Lab by Borja Alexandre. 21/11/2010"