Most players use it to trigger doors, traps and other basic machinery. Some clever folks have worked out equivalents to basic components though, so you can use

Most players use it to trigger doors, traps and other basic machinery. Some clever folks have worked out equivalents to basic components though, so you can use it to build just about anything with enough time and patience. http://minecraft.gamepedia.com/Redstone_circuit#Circuit_types http://minecraft.gamepedia.com/Redstone_circuit#Circuit_type...