The simplest Redstone door in Minecraft is completely manual. You have to walk right up to it and press a button to open it. Alternatively, you can also put a pressure plate next to it to open the ...

Hopper clock was invented by Minecraft creator EthosLab and is one of the best redstone clocks in the game. It requires hoppers, sticky pistons, redstone block, comparators, repeaters, redstone dust, ...