Mon Oct 26, 2020 8:42 pm
On the Keymux64 boards, a wire goes to the switch on each key, however the other end of the switch on each wire must go to the ground input on the board. You can have a common ground for each key switch, that is the point of using the Keymux64 boards rather than the SM8x8. Each Keymux64 board must also be wired from the appropriate connection (not the ground) to the PWR T connection on the main board, however, this is not the same as the ground. You can refer to the wiring diagram in the manual.