I am also worried if the coding will be more advanced by adding more variables.
is if there is a limitation to how many buttons/pot's the arduino can handle without compromising on signal.
It should support velocity
What do you mean by compromise?
I would source those before you worry about how many knobs you can have.
Concerning the number of knobs, i thought that the midi cc string is the same size wether or not im using all of the control channels.Is this true?
If there will be so much that i will notice it while playing live is what i am after.
but i don't know if they already calculate the velocity
how many keys do you want?