[sdiy] 14-bit MIDI CCs - common, or rare?

[Colin f]

> I'm just thinking about interfaces to decode CCs 0-31, 70 to 95, and
> 102 to 119 as 7-bit values - skipping out NRPNs, RPNs and DATAinc/dec.
> I guess it seems safe enough to shoot for 7-bit values for these?

If you only want 7-bit control, you can assign whichever CCs you like.
NRPNs might be worth supporting if you have a controller that sends them.
It depends on your intended use, I suppose.
 
> The others (64-69 and 120 - 127) would be simple logic ON/OFF 
> gates, as per MIDI spec.

It may be better to stay away from some of these.
120 and above are not actually CCs, they're Channel Mode Messages.
Most of them are rarely used now, but all-notes-off is worth handling
properly.
On a CV convertor it should turn off any gate outputs mapped to the message
channel.

Cheers,
Colin