synth_tools

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Uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on https://www.analog.com/media/en/technical-documentation/data-sheets/199399fc.pdf TO-92 2-pin leads in-line, narrow, oval pads, drill 0.75mm (https://www.diodes.com/assets/Package-Files/TO92S%20(Type%20B).pdf TO-92 leads.

Traces a3181ad06b Add correct footprints to fireball Latest.
0.871977 0.0992491 vertex -3.40623.
That system; it is.
7.60514 facet normal -0.0942412 0.028589 0.995139 vertex -7.20038.

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