CV IN and a knob in the same ADC

[Takumi_Ogata]

Hi mirko!

@mirko

is it possible to have a CV input jack and a knob controlling the same parameter, both going in the same Analog GPIO pin?

It’ll be better to have each signal going into its dedicated analog pin separately.

EDIT: If what you have in mind is that you want to add CV “to the knob position as if the Knob were a 0-5V signal”, then you can! Please reference that forum post as well as the Audio Inputs section of the Daisy Patch schematic.

@mirko

Also, what would happen if I put 0-10v CV from my eurorack system to a Daisy Seed analog input?

Anything above 3.3 volt will indeed fry the analog input pin. What you could use is zener limiter (Zener Limiters) and/or voltage divider.
There’s also this approach of using op-amp that’s better (Designing Winterbloom's Castor & Pollux - Stargirl (Thea) Flowers in the “Control Voltage Inputs” section)