Pro-one rack external IO diagram

Planned external inputs and outputs. Top ones are normal analog IO, bottom ones are midi and special keyboard and mod/pitch wheel IO.

Internal signal path diagram for Pro-one rack

Internal signals from card to card in the planned Pro-one rack. As the sheet indicates, the plan is now to build five cards, with the functionality spread as indicated. External signals and signals going to the front panel are not shown, except where indicated by "via switches".

Pro-one rack front panel sketch

Not much to say - just made an initial sketch of the pro one "rack" front panel. The panel is 5U high and 430mm wide, which leaves room for rack ears to be added later - meaning that the machine can be used both as a desktop version and as a rackmounted one.