Zorch's build progress

[analogoutput]

@fredrik

Assuming nominal resistor/capacitor values, the 10k tracking pot set to the middle position, and that I didn’t completely screw up my algebra, the CV for a given frequency is:

cv = 1.463 * ln(freq) + 0.239

so for e.g. 440 Hz you need to feed in just over 9 V in total (coarse tune + CV).

Not sure if or how the 9V vs 12V supply affects that. 440 Hz isn’t that low (it’s A above middle C). Still, it’s progress and it might be a lot better with 12V.