BMC038 - Panel Keyboard PCB | Barton Musical Circuits

This module is a keyboard, only mounted with your other modules in your modular synthesizer rather than in a separate housing. It does this by using a small number of push-buttosn instead of traditional keys. This can be used like a traditional keyboard to play melodies, or it can be used a precision voltage reference for voltage controlled parameters in other modules.

CONTROLS

• Pitch select buttons. There are 12 buttons corresponding to a chromatic scale. They are arranged like a typical keyboard with sharp/flat notes in a seperate row. Whenever two buttons are pressed at the same time, the lower in pitch of the two will be output.
• Octave select knob. This knob selects which of five octaves the keyboard will output. There are 4 LEDs above the knob which give visual feedback for which octave is active.
• Slew knob. This knob adjusts the rate of slew/glide/glissando between notes. Fully counterclockwise is no slew at all.

OUTPUTS

• CV output. This output goes from 0 to 5VDC in 1/12th volt intervals to corresond to the 1v/octave standard commonly used in synthesizer modules.
• Trigger output. This is a short pulse output whenever a pitch select button is pressed. It alternates between 0 and 5VDC
• Gate output. This pulses up whenever a pitch select button is pressed and remains high (5V) until the button is depressed.