This is a combination lock that I built which utilizes the features of the newest snapshots. It is a 3 dial lock with 512 possible combinations. There is also a confirmation lever that must be flipped when you have finished entering the code. When entered correctly, a note block chime plays, telling you that the combination is correct, and the piston door retracts. If entered incorrectly, the chime does not play, and the door stays extended. There are also red and green indication lights to show whether the combination entered is correct or incorrect. If you would like to use this device in your design, please give appropriate credit to me, mcdude96. Enjoy!