Some build notes for the Nonlinear circuits VC ADSR.
The attack, decay & release stages are voltage controllable.
(not sustain).
This is part 2 on my build.
Part 1 is here:
I'm up to building a light proof box to house some LDRs and LEDs.
These make a diy vactrol circuit.
This is a super simple module that uses a 555 timer, op-amps and some diodes to make
a ADSR envelope generator.
It's based on the classic Jacky/Kirschman 555 ADSR circuit from 1980.
Andrew has replaced the Attack-Decay-Release pots with DIY vactrols.
The 555 controls the sequencing while the diodes switch the currents.
This is the box so far:
the edge connectors
+ LEDs
time to solder the LDRs / LEDs
1 x 10K linear pot. (type B)
6 x 100K linear pot
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