Hi @zynthianers!
I just pushed into Vangelis an alternate implementation for this, using pure python and the internal zynthian router MIDI functions. It’s called “MIDI Control External” and you will find it in:
MIDI Tool → Others → MIDI Control External
As its name says, it ONLY works with external devices. If you route MIDI from this processor to internal ports it simply wont work.
- It sends “MSB Bank + Program change” by using the zynthian’s bank/preset mechanism.
- It has an “almost full” list of CCs with standard names. This could be modified. It’s just a PoC.
Note this simple “processor” could be used as a template for easily creating specific/custom controllers for specific external devices. This is cool 
Update and test, please (in Vangelis!)
Enjoy!