CV Expander Hardware Wanted!

[James]

@mj_prod

In the first moment I thought about a dwarf or ModX simply put in eurorack format

I think that could also be cool but it’s not clear how much demand there would be for that. I think if we made the control chain expander first and there was a lot of interest on that it could be a good indicator that a dedicated eurorack device would make sense

@mj_prod

You need a good power supply for the module if that isn’t provided by the rack itself, maybe a dip switch for 5V/ 10V operating mode if that’s useful / easy to implement (I am thinking here about the 3.5mm MIDI A vs MIDI B standards and the lack of knowledge about and therefore hard troubleshooting times).

Actaully we don’t need a power supply or any midi standards. The expander could be powered over the control chain and it would just use CV and CC so no midi involved (by CC I mean conntrol chain)

@mj_prod

Would it be easy to switch between analogue and digital signals so that you can decide whether a jack is an input port, output port or contains MIDI in/out/merging/thru signals?

CV is completely analog so all ports would be analog ins OR outs as they need a dedicated DAC or ADC (The Control Chain data is digital)

@malfunction54

so maybe we can come up with a modular board that can be used in either form factor?

Yeah I think we could make an optional back enclosure for it if you want to have it standalone instead of mounted in a rack

@jon

I’m not sure if this is technically possible

On this topic, the concern is that the CC protocol doesn’t have a high enough frequency for CV but from what @Jan has told me, the CC frequency is already higher than that of the CV ports on the Duo X which is very usable