Don’t try this at home: Colin Furze creates a semi-automatic potato cannon
Colin Furze decided that he needed a potato cannon for his DIY screw tank, and after making a manually loaded version, he automated the process.
What he came up with uses a pair of linear actuators to push the barrel forward under Arduino control, allowing a potato-projectile to drop into the device’s chamber assembly. After a short delay, it closes up again, cutting the roundish vegetable into a cylindrical plug. Flammable gas then enters via a solenoid valve for a carefully regulated amount of time.
With the gas mixed, the cannon is then fired, and a single button press starts the process over again. The powerful cannon creates a mess in his test area after a few shots, actually taking a plug out of the mattress he used to absorb the impact. It should be quite impressive once mounted on the screw tank, though it’s a project that you probably shouldn’t try at home.