Is it possible to chain input multiplexers together to use one PIN on the Mega?
i.e. MEGA-PIN20 > HC4067-PIN4 (PARENT) > HC4067-PIN15 (CHILD)
and then assign a button to the "CHILD" multiplexer.
The data.cfg file could be:
I have seen this done with a DM13A attached to an output multiplexer, but not input.