This Module is currently available.
Voltage Controlled Oscillator
The System80 820 Eurorack Oscillator is a utility Voltage Controlled Oscillator (VCO) based on the saw integrator and waveshapers common to many vintage Roland designs from the late 1970s. It features a discrete temperature compensated saw (ramp) core coupled to waveshaping circuitry that produces a pulse wave with adjustable width, a triangle wave and a sine wave. The conversion of the saw wave to a triangle wave produces a distinctive reset glitch at each peak. The triangle wave is bent by a diode shaper to produce an approximate sine wave.
820 is open source hardware. The design files are available on Github
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These merchants probably sell this module. Huh?