even VCO

Voltage controlled oscillator (VCO) with great precision, designed to be stable even in the case of power supply fluctuations.Supplied with an octave selector of 10 positions from 32′ to 1/16′ (C0~C9).

It’s able to track with a precision of 1 Cent from C0 to C7, 4 Cents in C8 and 13 Cents in C9.





Power drain:

+12V – 36mA

-12V – 26mA


8HP / 47mm Depth.


even_l SDS00003 pw50_l SDS00005 ramp_l SDS00004 sine_l SDS00002 tri_l SDS00001





V_0.3.2 / V0.3.3:

Assembly instructions

Schematics PDF

CAD files


Assembly instructions for V03

Schematics PDF V03

CAD files Version 03


Assembly instructions for V024

Schematics PDF V024

CAD files Version 024

Improve stability: Change R11 to 10k 1%, leave R14 unconnected, follow the calibration procedure. This is also valid for V0.23 & V0.22.

Remove offset from even: Change R28 to 2.7k.


Assembly instructions for V023

Schematics PDF V023

CAD files Version 023


 Assembly instructions for V022

Schematics PDF V022

CAD files Version 022




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