So, how many Raspberry Pi’s would I need if I wanted to drive a Full HD display…? Is this the wrong solution for something like this?
I’ve done 384x256 with one pi: Marc's Blog: arduino - RGB Panels, from 192x80, to 384x192, to 384x256 and maybe not much beyond
So you do the math. Long story short: many Pis and you likely want a set of custom FPGA cards instead