The A/D options are very much in development as a concept. The actual implementation is on the board but the specific components The A-> D and the D-> modules aren’t fitted. These need to be purchase separately. I think jofe spoke of providing the little wired modules required but I don’ remember if that was implemented.
Certainly I have the board somewhere, I was going to implement pedal that way but as with much of the hardware facilities like this it’s provided to embedded a physical stands against which we implement functionality via the software.
ADS1115 is certainly one module as mentioned it this thread.
It’s very much an official implementation but quite how signals get presented and what is considered standard use cases are very much up for grabs . To some that is a tremendous advantage because CV’s in and out are second nature to them, for others this might appear a little hap-hazard. Ultimately there are two basic controls philosophies at work. Zynthian control ( this pedal on the control input is conytrolling zynthian gui control xyz ) or MIDI control ( This pedal on the control input is generating MIDI controll CC’s and the zynth picks these up as normal MIDI control and reacts accordingly).
This is exactly the issue as seen for traeating the zynth as just another module ( JAM ) controoled by analogue CV’s and triggers. Obviously this is all possible but I’m not aware of too much push, unless of course you want to do it?
IT really boils down to what are you trying to do? Do you have a very specific use case ( I wish to use CV & trigger with my Doepler eurorack . … ) or is it a generic feature, cos it’s not just the modules it’s how connectors might be presented to external kit. IT’s easy to imagine the functionality but another game entirely to make it part of a physical system, especially if you are going to transport the bits as seperate components.