I am working on a project where I need to run 4 Mux Shield II’s using one Arduino Mega. The digital outputs of the shields need to be active low and only one output will ever need to be on at a time. I am controlling approximately 190 relays so I will need to use every output pin on the shields. I am wondering how you would connect and program this many Mux Shields with one Arduino Mega?
Mux_Shield_II_User_Guide.pdf (805 KB)