I have this small project where 2 Arduinos utilize the same Memory Module. My worry is the one Nano will fry the pins of the other. I need to use a buffer of some kind to make one Nano appear missing from the circuit. One Nano writes data to the module at 6:00am, then the other nano accesses that data after 6:00am for the rest of the day. But both are always powered on and both are connected to the memory module. Can a buffer be used here? Or maybe utilize the RESET on the first NANO somehow to make it appear High-Impedance to the other. Any help will be appreciated. Thanks.