MATRIXSYNTH: Moog Voyager to Eurorack Interface From Synovatron

Sunday, July 03, 2016

Moog Voyager to Eurorack Interface From Synovatron


via @davegalemusic

"Interface your @moogmusicinc Voyager to Eurorack! Expander module from @Synovatron @MusicTechMag @BrightonModular"


via Synovatron

"ATTENTION: The first and most important thing that I need to get across here is that the VXP1 has been designed for the keyboard versions of the Moog Voyager. The Old School version has the same Accessory Port but does not have a touchpad so therefore does not support the Touch X, Y, A and Gate outputs. The RME (Rack Mount Edition) has an Output Accessory Port and does support the VX-351 and is probably OK BUT I have not been able to verify the extent to which it is compatible as there is virtually no information about the RME Output Accesory Port's signal set. Logic suggests it is very similar but I cannot yet guarantee how well the VXP1 will work with the RME. I will try and find out (maybe borrow an RME for a weekend - any offers?).

TOUCH Outputs (X, Y, AREA, GATE)
This function produces TOUCH X, Y, AREA CV and GATE outputs in response to touching the Voyager's touchpad. X and Y vary according to where the pad is touched, AREA varies according to how much area on the pad is being pressed. The GATE turns on when the pad is touched.

X, Y and AREA are CV outputs that have an effective range of ±5V.

GATE is a 0V off and 10V on signal. The GATE LED illuminates when the pad is touched.

NOTE: The Touch outputs are not supported by the Old School Voyager; they will remain at zero volts. One possibility I'm looking into is to provide a modification to allow the 4 Touch connectors to be used as a mult. This would involve removing 4 resistors and adding 3 linking wires on the circuit board. Another possibility is to make X, Y and AREA into diode connected inputs to the GATE output. This would act as a logic OR gate. This would entail fitting diodes to 3 connectors and wiring them to a spare comparator chip and wiring that to the GATE output driver. These options would have to be ordered as an Old School variant with Mult or Diode options but I will publish details of how to modify or revert back to standard.

KEYBOARD Outputs (PITCH, VEL, PRESS, GATE)
This function produces KEYBOARD PITCH CV, VEL CV (velocity), PRESS CV (pressure) and GATE outputs in response to playing the keyboard. PITCH CV is determined by which key is pressed, VEL by how fast a key is pressed and PRESS by how hard a key is pressed. The GATE turns on when a key is pressed.

PITCH is a CV output that is trimmable to 1V/octave (using the screwdriver adjustment on the front panel) and has a nominal range of -0.916V (low F) to +2.667V (high C).

VEL and PRESS are CV outputs that have an effective range of ±5V.

GATE is a 0V off and 10V on signal. The GATE LED illuminates when a key is pressed.

WHEELS Outputs (PITCH, MOD)
This function produces WHEEL PITCH and MOD CV outputs in response to operating the Pitch and Mod wheels. The Pitch wheel is centre sprung to give 0V when not operated. The Mod wheel is not sprung and can be left in any position. Normally when the Mod wheel is fully rotated towards the player no modulation occurs (in the Voyager). However this position equates to -5V output. A jumper can be set on the VXP1 circuit board to provide either the standard ±5V range or a 0V-10V range. A 0V-10V range will allow it to operate a modular VCA to control modulation depth for example.

PITCH and MOD are CV outputs that have an effective range of ±5V but MOD is jumper selectable to have an effective range of 0V to +10V.

MORE TO FOLLOW IN DUE COURSE........"


"Here is the panel design that will go into production"

No comments:

Post a Comment

PREVIOUS PAGE NEXT PAGE HOME




© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH