Redstone mechanics in Minecraft are a system that allows players to create complex contraptions using a material called Redstone. This material can transmit power and signals, enabling players to build devices like doors, traps, and even simple computers. By connecting Redstone dust, torches, and various components, players can control the flow of energy and create automated systems. Players can use different components, such as levers, buttons, and pressure plates, to activate Redstone circuits. These components can trigger actions like opening doors or activating pistons. Understanding how these elements interact is key to mastering Redstone mechanics and creating innovative designs in the game.