I have a project I want to work on that would involve multiple Pis. I want to have them talk to each other via wifi/bluetooth with a main one with a display while the others each control a light or solenoid. Would this be possible with a bunch of Pis or would an arduino be the better option? Also would it be possible to daisy chain them so the main pi would know which state each pi would be in? Even if it is too far from the furthest unit? My experience so far has been with building the handheld emulators, so this is a big leap for me since those had walkthroughs. I'm thinking a Pi4 and a bunch of zeroes for the smaller units to reduce the cost.
