These are part 2 of my build of the Non Linear Circuits Helvetica Scenario module.
Part 1 is here:
Its a dual sample & hold module.
The module has a slew circuit added to each channel.
Andrew has I think used the Buchla SOU for some inspiration.
the Buchla 265 Source of Uncertainty uses as a source,
white noise and a 100Hz oscillator
This module instead contains a simple jerk chaos circuit running at approx.
300Hz to supply a signal for sampling.
It's all about the calcium molecule
"The calcium molecule contains a triple helix and is based on a semi-permanent structure of four electrons supporting three protons. The protons feed electrical information to the central queen atom,
which is vital to the structure of the molecule. Without the queen atom
at the centre, the entire structure would collapse causing the Helvetica Scenario." :-(
Oh my God. Sounds like we are all going to die.
Watch the video to learn more about this dangerous condition:
Hopefully, after watching this you will have realised its all a joke.
Your teeth aren't going to fall out , and your bones won't crumble to dust. :-)
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Getting back to the build.
The module uses 3 LEDs
One LED (3mm or 5mm) is for the chaos circuit.
Andrew recommends blue.
The other two LEDs are bipolar indicators that you will see on the front panel
Ive been waiting for some bipolar LEDs to arrive.
Finally. they are here.
If using red/green
from Tayda, 1k is ok.
If using red/blue, probably 4k7 is best.
If using factory vactrols , maybe try 1k for RL.
I'm also going to build my own vactrols.
So I Used 4.7k for the RL resistors
I'm trying some GL5549s with some yellow LEDs
Some info about vactrols:
The 1M* at the base of the vactrols set the maximum slew rate, feel
free to leave them off or change to suit your needs (lower resistance
= less slew). If not sure, just install 1M for now.
Do the headers next.
These join the two PCBs
B100k - linear pots
Jacks
OK ... all done.
The blue LED... part of the chaos circuit
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