These are my build notes for the Helvetica Scenario
Its a dual sample & hold module with a voltage controlled slew for each channel.
It contains a simple jerk chaos circuit running at approx.
300Hz to supply a signal for sampling. So, it is similar to the sample and hold section of the Buchla 265 Source of Uncertainty except it uses chaos as a source rather than
white noise and a 100Hz oscillator,
To get it running, patch a signal into the clock input. Clock 2 is
normalled to Clock 1 so a signal on 1 will drive both channels.
I'll use a DG 411
I'll build my own vactrol
If making your own
vactrols, select RL to suit your LEDs, generally 4k7 is a good
starting point for modern bright LEDs.
You will need a biploar LED
I've ordered some 3mm bipolar LEDs from Ebay.
Use a 4.7k for red/blue
To be continued when the LEDs arrive.......
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