I'm fairly new to using redstone, and I'm wondering what's the largest size of "door" that can be opened with a single switch?
I have a huge arena, and I'd ideally like to be able to hit one switch and open a large door to release the monsters. When I say "door", it doesn't necessarily need to be a door. For example, I once had a 2x3 door that opened via sliding blocks and sticky pistons.