I plan to use small e-ink SPI display, like this one : Link to e-ink display
In my project, I need to use 6 or maybe 8 of these display, and control all of them from a single Arduino board.
Is there any way to control all these display from a single Arduino board (like a Mega 2560) ? Using the "slave select" pin of the SPI bus ?
Or should I use a small Arduino board for each display and then control them all from a "central" board, using a communication bus between all the boards ?
Another question : should I shift the Arduino output levels from 5V to 3.3V ?