Named after a certain Super Robot Wars unit, this is a prototype of the defensive cannon I will install in the front of my house, inspired by a scatter cannon design by AlessioJWilliams. It is fully automatic and can fire up to 3 TNT blocks with a single fuel TNT block. You can increase range with more fuel, or fire 1, 2 or 3 projectiles. They are slightly directional and is reloadable from the inside. And of course being obsidian it's protected against creepers (rebuilding of the circuit and half-blocks is also possible from the inside in case one damages the front) The cannon is automatic, so you need to push only one button. A minor processor at the back of it allows the charges to be delayed. Note this is not a siege weapon, but a defense one. http://img820.imageshack.us/img820/81... - Building instructions. http://img820.imageshack.us/img820/52... - Delayer instructions (very simple, just keep linking like that based on your space or delay preferences. The more, the slower.)
I am sorry the video is like on crack, I can't find a decent linux screencast tool.