Fairfield Circuitry 2013899 Board Member Control Voltage Expression
USING THE CV JACK
The TRS CV jack can be configured to function in many different ways, opening up complex CV possibilities.
When switch 6 is set to ON, a 5v reference is sent on the ring connector for use with an expression pedal.
The connector tip then controls either the LPG (1), Feed (2) or Slew (3). It can control two or more parameters at once.
This is all also compatible with 0-5v external CV. In that case, if using a Split! breakout box or similar utility, the Ring connection can also be used to control LPG (4). Duplicating it in this way allows all 3 CV parameters to be controlled at once if one desires to do so.
Switch 5 outputs the internal envelope voltage, opening up fun synced interactions.
switch 1 to 3 switch 4 to 6 ground
LPG cutoff frequency feedback amount slew limiter frequency envelope output 5v reference voltage
BASIC PROGRAMMING PROCEDURE
To ensure no damage to your pedal, be sure to follow these steps when opening the enclosure
Preparation, good lighting, a clean work surface and proper tools are essential.
- Open the pedal by removing the four screws holding the lid. Put aside in a safe place.
- Pay close attention to the circuit board, do not allow anything to touch it. You are looking for a block of six micros witches close to the CV jack.
- Modify the switch arrangement with a small flat screwdriver, pen or similar tool to obtain a certain program.
- close the pedal with the lid and four screws, do not over-tighten.
EXAMPLE PROGRAMS
expression pedal controls LPG frequency (default)
expression pedal controls feedback amount
expression pedal controls both LPG and slew frequencies
CV on tip controls feedback amount CV on ring controls LPG frequency
tip controls slew frequency ring outputs internal envelope
expression pedal controls everything
maximum sweep
Documents / Resources
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Fairfield Circuitry 2013899 Board Member Control Voltage Expression [pdf] Instructions 2013899 Board Member Control Voltage Expression, 2013899, Board Member Control Voltage Expression, Control Voltage Expression, Voltage Expression, Expression |