Befaco - VC ADSR
The circuit is based in a dual transistor “Current Mirror” (a voltage controlled integrator) and switching logic.
Phase Time Limits:
Attack: Min 3.0ms (down to 200µS with negative CV) // Max 10s
Decay: Min 2.8ms (down to 400µS with negative CV) // Max 10s
Release: Min 2.8ms (with Sustain at maximum) // Max 10s
Features:
• Voltage controlled stages with manual control.
• Gate output on each stage of the envelope.
• Push button and Gate/Trigger input
• Control of the response curve between each stage of the envelope (from linear to logarithmic/exponential)
DIY-Kit-Type:
THT-Kit-1. This is a Do-It-Yourself kit, not an assembled module. The kit includes all parts to build the module. Only trough-hole parts to solder. Make sure to check the build guide before you buy. For build guide, more info, videos etc. please check the buttons below.
| Current draw +12 V [mA]: | 55 |
|---|---|
| Current draw -12 V [mA]: | 25 |
| DIY Level: | Medium |
| Depth [mm]: | 26 |
| Width [HP]: | 8 |
| Format: | 3U |
| Panel / Color: | Black Alu |
Befaco is an Eurorack manufacturer that also offers DIY kits, organizes workshops and releases their designs under Creative Commons license.
In February 2010 Befaco was created as an open hardware platform focusing on professional DIY musical hardware, materializing the previous electronic, musical and artistic research of its members.
Our main activity has been developing synthesizer modules in eurorack
format and making them available in workshops. All this research is
published under CC-NC-SA License, so people can download the schematics,
and technical assembly guides, to make their own variations of the
projects for personal and educative purposes. Also build all our designs
during our regular workshops in cities as Barcelona, Madrid, London or
Berlin.
During the past twelve years, apart of these regular four
cities, we have visited cities as Tokyo, Kyoto, Toronto, Montreal,
Chicago, Frankfurt, Helsinki, Lyon, Stuttgart and Amsterdam, amongst
many other European cities.
These workshops are a huge test playground where we can track each module being built by different worldwide users, get direct feedback and quickly improve them with, develop new ones, or adapt these instruments to users demands constantly.
Direct contact with DIY enthusiasts allows an implication of users in the structure, allowing them to design their own modules and develop them in a professional way. This has developed into an incubation environment for several new modular initiatives, allowing different makers to start their own similar projects.
Befaco initiative is possible thanks to the support of Hangar, an artistic production centre in Barcelona, Barcelona city hall and the titanic work by the whole Befaco team.
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