Hello, I am very new to circuits and rpi, I have never used any of these components before. I am curious if one rasberry pi can control 50 relays. I want to network 10 resberry pi's together in a dramble, where each rpi controls a bank of 50 relays. I have done a little digging, and it looks like I can use a shift register to bridge between the rpi and a bread/perf board, that can then run multiple 16 channel relays? And then I would also use the breadboard as a power supply to supply power to the second half of each of the 16 channel relays? Long story short, I am using this as a means to launch fireworks for the 4th, so I don't need heavy computing power, nor do I need to supply a large load for each bank, just enough current to heat a small piece of nichrom wire. Is something like this possible?