Hi all
I'd like to get modular synth audio signals into a Teensy for processing (pitch detection) but I'm green when it comes to electronics. Currently thinking I need to offset the +/-5v to 0-10v, then voltage divide that down to 0-3.3v. Is this correct, and is there a way of doing this without a -5v reference?
I'm looking at this schematic from the Ornament and Crime module for its CV inputs, however that seems to be using a -5v reference from the eurorack power source, and I am trying to avoid that at this stage - I am powering the Teensy from USB and if its not too complicated I want to keep it that way whilst prototyping the code.
Does anyone have an example of such an offset circuit, or how to calculate one? I have some of the MCP6004 op-amps as used in the O&C module.
Thanks in advance !
I'd like to get modular synth audio signals into a Teensy for processing (pitch detection) but I'm green when it comes to electronics. Currently thinking I need to offset the +/-5v to 0-10v, then voltage divide that down to 0-3.3v. Is this correct, and is there a way of doing this without a -5v reference?
I'm looking at this schematic from the Ornament and Crime module for its CV inputs, however that seems to be using a -5v reference from the eurorack power source, and I am trying to avoid that at this stage - I am powering the Teensy from USB and if its not too complicated I want to keep it that way whilst prototyping the code.
Does anyone have an example of such an offset circuit, or how to calculate one? I have some of the MCP6004 op-amps as used in the O&C module.
Thanks in advance !