Analogue-sequencer

> Ah, ok. I think I misinterpreted the drum-trigger interface 
> as something different then the CVIO breakout box. Now I 
> understand this is the same box.

No, it is separate.
The CVIO can also be used for drum triggers if you want.
The dedicated drum trigger output uses the DIN SYNC socket.
DIN sync normally has three digital pins, a ground pin and one spare pin.
I used the spare pin for a CV output.
In drum-mux mode, the three DIN sync pins are much like a one-way SPI
interface, with the gate triggers as the data bits and the accent CVs
multiplexed in sync with the SPI clock.
The drum-trigger board is a de-multiplexer for this output.

Cheers,
Colin