This module consists of 3 different circuits, such as Buffered Multiple, Unity Gain Mixer and Elby-Designs' Stompbox Adapter. Thanks to Elby-Designs' Stompbox Adapter, I was able to use guitar pedals with eurorack modules. But the problem I had was that it's not possible to manipulate dry and wet signal separately. So I combined it with other circuits to get it to work like aux send and return on a mixer. I barely know about electronics, so there might be some errors on a schematic. But it works like what I wanted. Please double check errors before you build this module.

SCHEMATIC

STRIPBOARD LAYOUT

FACEPLATE LAYOUT

Schematics: LINK

STRIPBOARD LAYOUT

I used J113 instead of 2N5457. 

CV ins and Trig ins seem to work, however 'Co-Co' side of trig in acts up. 

When powering on, it works but after a few moments, it stop working. 

No clue unfortunatley.

FACEPLATE LAYOUT

Schematics: MFOS

STRIPBOARD LAYOUT

All decoupling capacitors, 100nF, are soldered underneath boards.

FACEPLATE LAYOUT

MEASUREMENT

Sine wave / Vpp = 10v

Triangle wave / Vpp = 10.1v

Ramp wave / Vpp = 10v

Square wave / Vpp = 8.85v

Square wave / Duty cycle = 5% ~ 88%

Square wave / Duty cycle = 5% ~ 88%

Frequency range = 1.46Hz ~ 9.94kHz

Frequency range = 1.46Hz ~ 9.94kHz

LAYOUT

COMPONENTS

-3.5mm jack

-Bi-color led (or just a single color led but in this case the led won't light up when the voltage goes to negative)

-470 ohm resistor (It depends on how light you want it blink. As you know lower resister brighter blink)

Schematics: MFOS

STRIPBOARD LAYOUT

FACEPLATE LAYOUT

Schematic: LINK

STRIPBOARD LAYOUT

FACEPLATE LAYOUT