The problem I foresaw with a piston pulser alone is that the on signal is just as long as the off signal, which could end up with TNT activation signals still being on when the reload hits. It is basically an elongated piston pulser, with an AND gate attached to it. The timing mechanism is one of the parts I am more proud of, to be honest. Nothing particularly original about that part at least. The reloading mechanism is timed to reload after the cannon has fired with 14 or so repeaters, and works via pistons pushing sand out of a tower, which replaces itself as needed. The cannons themselves are not terribly unusual, other then the fact that one side of their barrels is composed of the next shot, and that both the propellant and ammo activation signals come from the same side of the cannon. I haven't actually timed it, but I think it fires at about 20ish RPM or so.Īll four cannons fire from the same signal, and are merely staggered by a different number of delay repeaters (0ish, 5, 10, and 15). I demonstrate reloading of a magazine at the end with flight mod, but you could use the ladder to climb up and reload via falling sand from the stone platform as well (which is set to the height needed for enough sand to fire all TNT in the magazine, without loading sand into the cannon afterward). It is designed to be capable of being operated and replenished without any such abilities though, so long as you have the TNT needed to fill its magazines. As you can likely guess, it was made with item commands and general 'non-legit' op commands and powers (and fly mod). That is, you push a lever and it will continue firing and reloading itself automatically until you push the lever again. As the title suggests, this is a cannon setup capable of fully automatic fire.

Minecraft rapid fire arrow