How do I set up an expression pedal with UltraViolet?

Configuring the EXP/MIDI Jack

• Press and hold the footswitch for at least 2 seconds while powering
  up UltraViolet. Once the LED flashes RED, release the footswitch.
• Turn the VOLUME knob counter-clockwise until the LED turns GREEN.
• Press the footswitch to store the EXP/MIDI Jack Mode and begin
  using UltraViolet.

Expression Pedal Setup

Use a TRS expression pedal to remotely control the knobs of UltraViolet.
By default, UltraViolet is configured so that an Expression pedal controls
the SPEED knob.

• Connect an expression pedal to the EXP/MIDI jack of UltraViolet using
  a TRS cable.
• Press and hold the FOOTSWITCH for at least 2 seconds, until the
  LED blinks GREEN.
• Rock your expression pedal to the HEEL position. The GREEN LED
  will stop blinking and remain lit.
• Set the knob(s) you would like to control to the desired settings for the
  HEEL position of the expression pedal.
• Rock the expression pedal to the TOE position. The LED will turn RED.
• Set the knob(s) you would like to control to the desired settings for the
  TOE position of the expression pedal.
• Press and release the UltraViolet footswitch to exit and store your
  expression pedal setup.

*We recommend using an expression pedal with 25k resistance, such as the Moog EP2/ EP-3, or the Mission Engineering EP25K*