ENV-310 6HP adsr SMD by FEEDBACK [UPDATE!]

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strat-1
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ENV-310 6HP adsr SMD by FEEDBACK [UPDATE!]

Post by strat-1 » Sun Jan 31, 2021 7:09 am

www.feedbackmodules.com

[UPDATE] I corrected some mistakes in the BOM list. The quantity for diodes was wrong.

Image

MAIN PCB Top and Bottom
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POWER PCB Top and Bottom
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This is an envelope generator based on the SMD AS3310.
The AS3310 is a modern recreation of the classic Curtis CEM3310 chip, used in many famous mono and poly analogue synth from the eighties.
We took the best ideas from all the classic 3310 circuits and tried to squeeze the maximum from this fantastic chip.
The MODE switch takes this module beyond a simple ADSR type envelope generator.
It can work as:
- NORMAL - a conventional ADSR envelope,
- DAMPED - an ADRR piano envelope approximation
- AUTO - a short gate will cycle the envelope shaper through a complete ADR envelope
It has an additional TRIGGER input which can be used for generating multiple peak envelopes.
This is a relatively easy build, using common parts and SO-16 AS3310 SMD chip.

Attack Time 2.5ms-1.5s
Decay Time 6ms-4s
Sustain Level 0-10V
Release Time 6ms-4s

ENV-100 is available in two type of kits :

KIT1 :
- 2 x PCBs + Front Panel

KIT2 :
- 2 x PCBs + Front Panel
- 1 x Red LED superbright
- 1 x AS3310 SMD

KIT3:
- 2 x PCBs + Front Panel
- 1 x AS3310 SMD
- 1 x Red LED superbright
- 1 x Tactile E-Switch + White cap
- 1 x 100KB Pot
- 3 x 1MA Pot
- 4 x Minijack sockets
- 1 x 6way Pinheader Male for 10/12mm spacer
- 1 x 6way Pinheader Female for 10/12mm spacer
- 4 x 1900h Cream Knobs

The rest of the parts like resistors, caps, diodes, are easy to be found on every common store.

We just released 3 new projects : LFO-10, ENV-100 and ENV-310

SOUND DEMOS SOON!
Attachments
ENV-310 Build Files 1.0.zip
(33.86 MiB) Downloaded 8 times
ENV-310 - POWER pcb.jpg
ENV-310 - POWER pcb.jpg (110.48 KiB) Viewed 413 times
ENV-310 - Module.jpg
ENV-310 - Module.jpg (142.26 KiB) Viewed 413 times
ENV-310 - MAIN pcb.jpg
ENV-310 - MAIN pcb.jpg (195.69 KiB) Viewed 413 times
ENV-310 Build Photos 1.0.zip
(11.03 MiB) Downloaded 8 times
Last edited by strat-1 on Wed Mar 10, 2021 3:28 am, edited 2 times in total.

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Re: ENV-310 6HP adsr by FEEDBACK [NEW SMD project!]

Post by strat-1 » Mon Feb 15, 2021 10:38 am

I made a movie demo for ENV-310.

ENV-310 fed into LO-FUSIONs freq input and cv input of VCA-100. In second part of the movie LFO-10 triangle output it's modulating the other freq input of LO-FUSION VCF. Signal source is the square output of TWO59 VCO.
Ambience is made with 1-BIT sigma delta DELAY.
VCA-100 is not in the system, is a work in progress module made on a testboard, soon to be released.


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Re: ENV-310 6HP adsr by FEEDBACK [NEW SMD project!]

Post by strat-1 » Thu Feb 18, 2021 10:33 am

I made a pdf manual explaining the functions of ENV-310 adsr.

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Re: ENV-310 6HP adsr by FEEDBACK [NEW SMD project!]

Post by strat-1 » Fri Mar 05, 2021 2:57 pm

[UPDATE] I corrected some mistakes in the BOM list. The quantity for diodes was wrong.

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Re: ENV-310 6HP adsr SMD by FEEDBACK [UPDATE!]

Post by strat-1 » Wed Mar 10, 2021 3:27 am

Here are the time specifications:

Attack Time 2.5ms-1.5s
Decay Time 6ms-4s
Sustain Level 0-10V
Release Time 6ms-4s

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