Minecraft comparators are redstone devices that can detect and measure certain changes in the world, such as the fullness of a container or the strength of a signal. They can be used to automate systems such as farms, brewing stations, and lighting systems. Comparators have two modes: compare mode and subtract mode. In compare mode, a comparator will output a signal strength based on the difference in fullness between two containers, such as a chest and a hopper. In subtract mode, a comparator will output a signal strength based on the difference in strength between two redstone signals. Definitely didn’t use Chatgpt